Widnes West: your water explained
Published results for this named supply area. Your address may be served by a different area.
Confirm your address · Check a postcode
Check your full postcode before assuming this area report describes the water serving your address.
Your water at a glance
Hard water. Expect limescale.
For your home, the main practical issue is mineral scale in kettles, showers and appliances. Check your dishwasher setting and follow appliance care instructions.
225 mg/l as CaCO₃
Soft ≤100 · Slightly hard ≤150 · Moderately hard ≤200 · Hard ≤300 · Very hard >300 mg/l. DWI hardness bands; not safety grades.
Published quality checks
1 parameter needs a closer look
These labels describe Rolling 12 months; updated 2026-09-04. 64 other parameters have no complete compliance judgement here. They are not a guarantee about an individual tap today.
Coliform bacteria
Understand the reported results ↓Read the supplier’s original report and notes ↗Make this useful for your home
Hardness reporting period: Rolling 12 months; updated 2026-09-04 · Quality reporting period: Rolling 12 months; updated 2026-09-04
Appliance settings · Convert hardness units
2.25 mmol/l
A conversion of the published hardness, not another test. Follow your appliance’s model-specific instructions.
Drinking-water results
What do the important results mean?
Read the status, sample range and source requirement together. A low average can hide an individual exceedance. Green labels mean the supplier reported no exceedances for that parameter and period; amber calls for source context.
Coliform bacteria
! Range crosses the source reference
Published mean
0 number/100ml
Source reference: 0 number/100ml
Used to monitor water-system hygiene. Interpret detections with the supplier’s sampling location and investigation notes.
142 samples · Range: 0 to 4 number/100ml
The reported sample range extends beyond the numerical reference. Check the source explanation; no failure count is inferred.
E. coli
Mean at or below the source limit
Published mean
0 number/100ml
Source reference: 0 number/100ml
A microbiological indicator. The reported sample results and any failures matter more than an average bacterial count.
142 samples · Range: 0 to 0 number/100ml
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Lead
Reported upper bound at or below the limit
Published mean
<0.550 µg Pb/l
Source reference: 10 µg Pb/l
Plumbing can affect lead at an individual tap. An area average cannot rule out a problem with pipes at your property.
10 samples · Range: <0.550 to <0.550 µg Pb/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Nitrate
Mean at or below the source limit
Published mean
27.0 mg NO3/l
Source reference: 50 mg NO3/l
A dissolved compound monitored against drinking-water requirements. Its mean, highest reported result and sample count answer different questions.
7 samples · Range: 25.2 to 27.9 mg NO3/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
For your household
What should you do next?
Check appliance settings
Match the hardness unit to your dishwasher manual. Settings depend on the model.
Dishwasher guideManage limescale
Follow the manufacturer’s descaling advice. Check what a filter actually removes before buying.
Filters and limescaleA new change at your tap?
For a new taste, smell, colour or supply problem, check current supplier advice. Annual data is not a live incident feed.
Official supplier help ↗Taste, appearance and mineral content
Chlorine, pH and minerals answer different questions. Calcium and magnesium help describe hardness; chloride is different from treatment chlorine. None is a stand-alone water-quality score.
Free chlorine residual
Disinfectant remaining after treatment. It can influence taste and smell; a lower concentration is not automatically better.
See the measurement and context ↓pH
Describes acidity and alkalinity on a scale, rather than an amount of a substance. Where the source gives a range, both its lower and upper bounds matter.
See the measurement and context ↓Calcium
A naturally occurring mineral that contributes to hardness. Calcium alone is not the same measurement as total hardness.
See the measurement and context ↓Has the hardness changed?
History for this reported source area. Only comparable annual statistics appear in the chart; rolling summaries are kept separate. These are not daily tests at your address.
A comparable historical series is not available yet. We will add earlier reports when we can verify their periods and source areas.
Explore all measurements · 68 parameters · Rolling 12 months; updated 2026-09-04
Every result retains its original units, range, sample count and source notes. Comparisons use the reference printed in this report; qualitative references and missing limits are not converted into invented pass/fail judgements. Unlisted substances are not necessarily absent from the water.
Parameters without their own explanation: A substance monitored in this supplier report. The source reference, units, sample range and any reported failures provide its context; the number alone is not a water-quality rating.
Source note on 67 of these parameters: “Supplier reports 0% of samples failing its requirement. This is a historical percentage, not a current incident or a reconstructed failure count.”
Hardness and minerals 8 parameters
Alkalinity
No numerical limit supplied
Published mean
169 mg/l
Source reference:
How strongly water resists a change in acidity. This helps describe its chemistry; it is different from pH and total hardness.
9 samples · Range: 164 to 178 mg/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Alkalinity as CaCO3. Original mean: 169 mg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Calcium
No numerical limit supplied
Published mean
54.1 mg Ca/l
Source reference:
A naturally occurring mineral that contributes to hardness. Calcium alone is not the same measurement as total hardness.
51 samples · Range: 50.8 to 57.7 mg Ca/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Calcium. Original mean: 54.1 mg Ca/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Chloride
Mean at or below the source limit
Published mean
30.5 mg Cl/l
Source reference: 250 mg Cl/l
A dissolved salt component that can influence taste at higher concentrations. It is different from chlorine used in treatment.
57 samples · Range: 19.8 to 43.8 mg Cl/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 250. Source parameter: Chloride. Original mean: 30.5 mg Cl/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Fluoride
Reported upper bound at or below the limit
Published mean
<0.271 mg F/l
Source reference: 1.5 mg F/l
Can occur naturally or be added through a fluoridation scheme. The concentration alone does not tell you whether it was added; a lower number is not automatically better.
124 samples · Range: <0.270 to <0.300 mg F/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 1.5. Source parameter: Fluoride. Original mean: <0.271 mg F/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Total hardness
No numerical limit supplied
Published mean
225 mg CaCO3/l
Source reference:
Dissolved calcium and magnesium affect limescale and appliance settings. This is a mineral description, not a safety score.
51 samples · Range: 207 to 247 mg CaCO3/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Hardness Total as CaCO3. Original mean: 225 mg CaCO3/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Magnesium
No numerical limit supplied
Published mean
21.8 mg Mg/l
Source reference:
A naturally occurring mineral that contributes to hardness alongside calcium.
51 samples · Range: 19.1 to 25.0 mg Mg/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Magnesium. Original mean: 21.8 mg Mg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Sodium
Mean at or below the source limit
Published mean
43.0 mg Na/l
Source reference: 200 mg Na/l
A dissolved salt component. Compare the water measurement with its source reference; it is not a measure of your total dietary salt intake.
8 samples · Range: 36.3 to 51.8 mg Na/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 200. Source parameter: Sodium. Original mean: 43.0 mg Na/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Sulphate
Mean at or below the source limit
Published mean
61.5 mg SO4/l
Source reference: 250 mg SO4/l
A dissolved mineral component monitored in water-quality reports. Read its concentration alongside the source reference.
59 samples · Range: 38.5 to 89.0 mg SO4/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 250. Source parameter: Sulphate. Original mean: 61.5 mg SO4/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Taste, appearance and treatment 6 parameters
Free chlorine residual
No numerical limit supplied
Published mean
0.73 mg/l
Source reference:
Disinfectant remaining after treatment. It can influence taste and smell; a lower concentration is not automatically better.
141 samples · Range: 0.32 to 1.13 mg/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Residual chlorine - Free. Original mean: 0.73 mg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Colour
Reported upper bound at or below the limit
Published mean
<1.94 mg/l Pt/Co scale
Source reference: 20 mg/l Pt/Co scale
A measure of water colour under test conditions. A new change at your tap should be checked with your supplier.
52 samples · Range: <1.75 to <2.08 mg/l Pt/Co scale
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 20. Source parameter: Colour. Original mean: <1.94 mg/l Pt/Co scale.
Source note: printed once above this list (the same note appears on 67 parameters).
Conductivity
Mean at or below the source limit
Published mean
548 uS/cm at 20oC
Source reference: 2500 uS/cm at 20oC
Indicates how readily water conducts electricity, influenced by dissolved ions. It is not a direct measurement of hardness or safety.
52 samples · Range: 512 to 568 uS/cm at 20oC
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 2500. Source parameter: Conductivity. Original mean: 548 uS/cm at 20oC.
Source note: printed once above this list (the same note appears on 67 parameters).
Total organic carbon
No numerical limit supplied
Published mean
0.889 mg C/l
Source reference:
A broad measure of organic carbon used to understand water and treatment. It does not identify an individual contaminant.
54 samples · Range: 0.200 to 1.91 mg C/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Total organic carbon. Original mean: 0.889 mg C/l.
Source note: printed once above this list (the same note appears on 67 parameters).
pH
Reference needs source context
Published mean
7.44 pH value
Source reference: 9.5
Describes acidity and alkalinity on a scale, rather than an amount of a substance. Where the source gives a range, both its lower and upper bounds matter.
102 samples · Range: 7.15 to 7.85 pH value
The supplied reference cannot be safely compared numerically with this reading. Check its units and the complete source requirement; no pass/fail judgement is inferred.
Original wording and source notes
Source reference: 9.5. Source parameter: Hydrogen ion (pH). Original mean: 7.44 pH value.
Source note: printed once above this list (the same note appears on 67 parameters).
Turbidity
Reported upper bound at or below the limit
Published mean
<0.15 NTU
Source reference: 4 NTU
Measures cloudiness caused by suspended particles. It cannot identify their cause on its own.
54 samples · Range: <0.10 to <0.20 NTU
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 4. Source parameter: Turbidity. Original mean: <0.15 NTU.
Source note: printed once above this list (the same note appears on 67 parameters).
Metals 13 parameters
Aluminium
Reported upper bound at or below the limit
Published mean
<5.33 µg Al/l
Source reference: 200 µg Al/l
Monitored as part of water-quality testing and treatment control. Compare with the reference and sample results in the source.
51 samples · Range: <2.71 to <6.22 µg Al/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 200. Source parameter: Aluminium. Original mean: <5.33 µg Al/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Antimony
Reported upper bound at or below the limit
Published mean
<0.318 µg Sb/l
Source reference: 5 µg Sb/l
A trace element monitored in drinking water. The source reference and sample results provide the relevant comparison.
8 samples · Range: <0.310 to <0.330 µg Sb/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 5. Source parameter: Antimony. Original mean: <0.318 µg Sb/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Arsenic
Reported upper bound at or below the limit
Published mean
<0.480 µg As/l
Source reference: 10 µg As/l
A trace element monitored against a drinking-water requirement. Use the source results and units rather than taste or appearance to interpret it.
8 samples · Range: <0.480 to <0.480 µg As/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10. Source parameter: Arsenic. Original mean: <0.480 µg As/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Boron
Reported upper bound at or below the limit
Published mean
<0.0254 mg B/l
Source reference: 1 mg B/l
A dissolved element monitored in drinking water. The source reference applies to the parameter and units shown here.
63 samples · Range: <0.0127 to 0.0451 mg B/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 1. Source parameter: Boron. Original mean: <0.0254 mg B/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Cadmium
Reported upper bound at or below the limit
Published mean
<0.0900 µg Cd/l
Source reference: 5 µg Cd/l
A trace metal monitored in drinking water. A less-than result reports an upper bound, not a measured zero.
8 samples · Range: <0.0900 to <0.0900 µg Cd/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 5. Source parameter: Cadmium. Original mean: <0.0900 µg Cd/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Chromium
Reported upper bound at or below the limit
Published mean
<0.830 µg Cr/l
Source reference: 50 µg Cr/l
A trace metal monitored in drinking-water reports. Keep the source’s chemical definition and units when comparing results.
8 samples · Range: <0.830 to <0.830 µg Cr/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 50. Source parameter: Chromium. Original mean: <0.830 µg Cr/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Copper
Reported upper bound at or below the limit
Published mean
<0.0204 mg Cu/l
Source reference: 2 mg Cu/l
Can be influenced by plumbing. The area report does not replace investigation of a problem at an individual property.
10 samples · Range: <0.0104 to 0.0523 mg Cu/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 2. Source parameter: Copper. Original mean: <0.0204 mg Cu/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Iron
Reported upper bound at or below the limit
Published mean
<8.17 µg Fe/l
Source reference: 200 µg Fe/l
Can affect water colour, staining and taste. A historical result does not diagnose a change in your tap water today.
51 samples · Range: <2.10 to 49.0 µg Fe/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 200. Source parameter: Iron. Original mean: <8.17 µg Fe/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Lead
Reported upper bound at or below the limit
Published mean
<0.550 µg Pb/l
Source reference: 10 µg Pb/l
Plumbing can affect lead at an individual tap. An area average cannot rule out a problem with pipes at your property.
10 samples · Range: <0.550 to <0.550 µg Pb/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10. Source parameter: Lead. Original mean: <0.550 µg Pb/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Manganese
Reported upper bound at or below the limit
Published mean
<0.526 µg Mn/l
Source reference: 50 µg Mn/l
Can affect colour and deposits. Any reported exceedance needs the supplier’s investigation context.
51 samples · Range: <0.370 to 4.15 µg Mn/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 50. Source parameter: Manganese. Original mean: <0.526 µg Mn/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Mercury
Reported upper bound at or below the limit
Published mean
<0.130 µg Hg/l
Source reference: 1 µg Hg/l
A trace metal monitored against drinking-water requirements. Keep detection limits separate from exact measurements.
59 samples · Range: <0.130 to <0.130 µg Hg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 1. Source parameter: Mercury. Original mean: <0.130 µg Hg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Nickel
Mean at or below the source limit
Published mean
1.60 µg Ni/l
Source reference: 20 µg Ni/l
A monitored metal that can be influenced by materials in contact with water. Local plumbing and sampling context matter.
10 samples · Range: 1.25 to 2.21 µg Ni/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 20. Source parameter: Nickel. Original mean: 1.60 µg Ni/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Selenium
Reported upper bound at or below the limit
Published mean
<0.850 µg Se/l
Source reference: 10 µg Se/l
A trace element monitored in drinking water. Its presence alone does not establish that a requirement was exceeded.
8 samples · Range: <0.850 to <0.850 µg Se/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10. Source parameter: Selenium. Original mean: <0.850 µg Se/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Microbiology 3 parameters
Coliform bacteria
! Range crosses the source reference
Published mean
0 number/100ml
Source reference: 0 number/100ml
Used to monitor water-system hygiene. Interpret detections with the supplier’s sampling location and investigation notes.
142 samples · Range: 0 to 4 number/100ml
The reported sample range extends beyond the numerical reference. Check the source explanation; no failure count is inferred.
Original wording and source notes
Source reference: 0. Source parameter: Coliform bacteria. Original mean: 0 number/100ml.
Supplier reports 1.41% of samples failing its requirement. This is a historical percentage, not a current incident or a reconstructed failure count.
E. coli
Mean at or below the source limit
Published mean
0 number/100ml
Source reference: 0 number/100ml
A microbiological indicator. The reported sample results and any failures matter more than an average bacterial count.
142 samples · Range: 0 to 0 number/100ml
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0. Source parameter: E.coli. Original mean: 0 number/100ml.
Source note: printed once above this list (the same note appears on 67 parameters).
Enterococci
Mean at or below the source limit
Published mean
0 number/100ml
Source reference: 0 number/100ml
A microbiological indicator assessed through sample results. Read any reported failures with the supplier’s investigation notes.
9 samples · Range: 0 to 0 number/100ml
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0. Source parameter: Enterococci. Original mean: 0 number/100ml.
Source note: printed once above this list (the same note appears on 67 parameters).
Other monitored substances 38 parameters
2,4-D
Reported upper bound at or below the limit
Published mean
<0.0099 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0090 to 0.0300 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: 2,4-D. Original mean: <0.0099 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
2,4-DB
Reported upper bound at or below the limit
Published mean
<0.0150 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0150 to <0.0150 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: 2,4-DB. Original mean: <0.0150 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Ammonium (ammonia and ammonium ions)
Reported upper bound at or below the limit
Published mean
<0.0415 mg NH4/l
Source reference: 0.5 mg NH4/l
About this parameter: see the note above this list.
7 samples · Range: <0.0322 to <0.0540 mg NH4/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.5. Source parameter: Ammonium (ammonia and ammonium ions). Original mean: <0.0415 mg NH4/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Asulam
Reported upper bound at or below the limit
Published mean
<0.0122 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0042 to <0.0170 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Asulam. Original mean: <0.0122 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Benzene
Reported upper bound at or below the limit
Published mean
<0.0810 µg/l
Source reference: 1 µg/l
About this parameter: see the note above this list.
61 samples · Range: <0.0780 to <0.0830 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 1. Source parameter: Benzene. Original mean: <0.0810 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Benzo(a)pyrene
Reported upper bound at or below the limit
Published mean
<0.0020 µg/l
Source reference: 0.01 µg/l
About this parameter: see the note above this list.
6 samples · Range: <0.0020 to <0.0020 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.01. Source parameter: Benzo(a)pyrene. Original mean: <0.0020 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Bromate
Reported upper bound at or below the limit
Published mean
<0.640 µg BrO3/l
Source reference: 10 µg BrO3/l
About this parameter: see the note above this list.
9 samples · Range: <0.640 to <0.640 µg BrO3/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10. Source parameter: Bromate. Original mean: <0.640 µg BrO3/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Carbetamide
Reported upper bound at or below the limit
Published mean
<0.0086 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0070 to <0.0100 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Carbetamide. Original mean: <0.0086 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Residual chlorine - Total
No numerical limit supplied
Published mean
0.81 mg/l
Source reference:
About this parameter: see the note above this list.
142 samples · Range: 0.36 to 1.50 mg/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Residual chlorine - Total. Original mean: 0.81 mg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Chlortoluron
Reported upper bound at or below the limit
Published mean
<0.0050 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0050 to <0.0050 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Chlortoluron. Original mean: <0.0050 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Colony counts after 3 days at 22 deg C
No numerical limit supplied
Published mean
5 number/1ml
Source reference:
About this parameter: see the note above this list.
52 samples · Range: 0 to 141 number/1ml
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
Original wording and source notes
Source reference: . Source parameter: Colony counts after 3 days at 22 deg C. Original mean: 5 number/1ml.
Source note: printed once above this list (the same note appears on 67 parameters).
Clostridium perfringens (including spores)
Mean at or below the source limit
Published mean
0 number/100ml
Source reference: 0 number/100ml
About this parameter: see the note above this list.
9 samples · Range: 0 to 0 number/100ml
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0. Source parameter: Clostridium perfringens (including spores). Original mean: 0 number/100ml.
Source note: printed once above this list (the same note appears on 67 parameters).
Clopyralid
Reported upper bound at or below the limit
Published mean
<0.0150 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0150 to <0.0150 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Clopyralid. Original mean: <0.0150 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Cyanide
Reported upper bound at or below the limit
Published mean
<3.91 µg CN/l
Source reference: 50 µg CN/l
About this parameter: see the note above this list.
60 samples · Range: <3.91 to <3.91 µg CN/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 50. Source parameter: Cyanide. Original mean: <3.91 µg CN/l.
Source note: printed once above this list (the same note appears on 67 parameters).
1,2-dichloroethane
Reported upper bound at or below the limit
Published mean
<0.161 µg/l
Source reference: 3 µg/l
About this parameter: see the note above this list.
63 samples · Range: <0.130 to <0.180 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 3. Source parameter: 1,2-dichloroethane. Original mean: <0.161 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Diazinon
Reported upper bound at or below the limit
Published mean
<0.0082 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0070 to <0.0090 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Diazinon. Original mean: <0.0082 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Dicamba
Reported upper bound at or below the limit
Published mean
<0.0158 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0120 to <0.0160 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Dicamba. Original mean: <0.0158 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Diuron
Reported upper bound at or below the limit
Published mean
<0.0115 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0100 to <0.0130 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Diuron. Original mean: <0.0115 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Fluroxypyr
Reported upper bound at or below the limit
Published mean
<0.0230 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0230 to <0.0230 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Fluroxypyr. Original mean: <0.0230 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Glyphosate
Reported upper bound at or below the limit
Published mean
<0.0196 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
26 samples · Range: <0.0130 to <0.0200 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Glyphosate. Original mean: <0.0196 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Isoproturon
Reported upper bound at or below the limit
Published mean
<0.0090 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0090 to <0.0090 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Isoproturon. Original mean: <0.0090 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Linuron
Reported upper bound at or below the limit
Published mean
<0.0085 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0070 to <0.0100 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Linuron. Original mean: <0.0085 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
MCPA
Reported upper bound at or below the limit
Published mean
<0.0108 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0100 to 0.0200 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: MCPA. Original mean: <0.0108 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Mecoprop
Reported upper bound at or below the limit
Published mean
<0.0100 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0100 to 0.0100 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Mecoprop. Original mean: <0.0100 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Metaldehyde
Reported upper bound at or below the limit
Published mean
<0.0081 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0045 to <0.0102 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Metaldehyde. Original mean: <0.0081 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Nitrite
Reported upper bound at or below the limit
Published mean
<0.0082 mg NO2/l
Source reference: 0.5 mg NO2/l
A nitrogen compound monitored in water supplies. Requirements can depend on where the sample was collected; use the reference printed in this report.
7 samples · Range: <0.0076 to <0.0099 mg NO2/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.5. Source parameter: Nitrite. Original mean: <0.0082 mg NO2/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Nitrate
Mean at or below the source limit
Published mean
27.0 mg NO3/l
Source reference: 50 mg NO3/l
A dissolved compound monitored against drinking-water requirements. Its mean, highest reported result and sample count answer different questions.
7 samples · Range: 25.2 to 27.9 mg NO3/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 50. Source parameter: Nitrate. Original mean: 27.0 mg NO3/l.
Source note: printed once above this list (the same note appears on 67 parameters).
(Nitrate)/50 plus (nitrite)/3
Mean at or below the source limit
Published mean
0.540 mg/l
Source reference: 1 mg/l
About this parameter: see the note above this list.
7 samples · Range: 0.503 to 0.557 mg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 1. Source parameter: (Nitrate)/50 plus (nitrite)/3. Original mean: 0.540 mg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Odour (quantitative)
Mean at or below the source limit
Published mean
0 dilution number at 25oC
Source reference: 0 dilution number at 25oC
About this parameter: see the note above this list.
58 samples · Range: 0 to 0 dilution number at 25oC
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0. Source parameter: Odour (quantitative). Original mean: 0 dilution number at 25oC.
Source note: printed once above this list (the same note appears on 67 parameters).
Polycyclic aromatic hydrocarbons (sum of 4 PAHs)
Mean at or below the source limit
Published mean
0.0000 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
6 samples · Range: 0.0000 to 0.0000 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0.1. Source parameter: Polycyclic aromatic hydrocarbons (sum of 4 PAHs). Original mean: 0.0000 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Pentachlorophenol
Reported upper bound at or below the limit
Published mean
<0.0130 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
15 samples · Range: <0.0130 to <0.0130 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Pentachlorophenol. Original mean: <0.0130 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Pesticides - Total
Mean at or below the source limit
Published mean
0.0033 µg/l
Source reference: 0.5 µg/l
About this parameter: see the note above this list.
26 samples · Range: 0.0000 to 0.0499 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0.5. Source parameter: Pesticides - Total. Original mean: 0.0033 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Propyzamide
Reported upper bound at or below the limit
Published mean
<0.0080 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0080 to <0.0080 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Propyzamide. Original mean: <0.0080 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Taste (quantitative)
Mean at or below the source limit
Published mean
0 dilution number at 25oC
Source reference: 0 dilution number at 25oC
About this parameter: see the note above this list.
57 samples · Range: 0 to 0 dilution number at 25oC
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 0. Source parameter: Taste (quantitative). Original mean: 0 dilution number at 25oC.
Source note: printed once above this list (the same note appears on 67 parameters).
Tetrachloromethane
Reported upper bound at or below the limit
Published mean
<0.525 µg/l
Source reference: 3 µg/l
About this parameter: see the note above this list.
6 samples · Range: <0.380 to <0.670 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 3. Source parameter: Tetrachloromethane. Original mean: <0.525 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Trihalomethanes - Total
Mean at or below the source limit
Published mean
4.27 µg/l
Source reference: 100 µg/l
About this parameter: see the note above this list.
6 samples · Range: 3.84 to 5.09 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 100. Source parameter: Trihalomethanes - Total. Original mean: 4.27 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Triclopyr
Reported upper bound at or below the limit
Published mean
<0.0170 µg/l
Source reference: 0.1 µg/l
About this parameter: see the note above this list.
24 samples · Range: <0.0170 to <0.0170 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.1. Source parameter: Triclopyr. Original mean: <0.0170 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Tetrachloroethene and trichloroethene
Mean at or below the source limit
Published mean
1.03 µg/l
Source reference: 10 µg/l
About this parameter: see the note above this list.
6 samples · Range: 0.838 to 1.23 µg/l
Compliance detail is unavailable. This summary alone does not establish that every sample complied.
Original wording and source notes
Source reference: 10. Source parameter: Tetrachloroethene and trichloroethene. Original mean: 1.03 µg/l.
Source note: printed once above this list (the same note appears on 67 parameters).
Sources, dates and how to interpret this page
- Reporting period
- Rolling 12 months; updated 2026-09-04
- Source retrieved
- 2026-09-11
- Last verified source check
- 2026-09-11
- Original publication
- United Utilities report ↗
Official supplier report for this supply zone, retrieved with postcode WA8 7EA. Town pages that cite this zone show their own supplier-confirmed example postcode. This is an example supply area, not a measurement at every address in the towns it serves.
The supplier describes a rolling 12-month window updated weekly. Its update date is not an exact sampling-period end date. Overlapping rolling windows are not annual trend points.
All published numeric parameters are retained, including censored readings and historical failures. These results are not a statement about current incidents.
Supplier reports 0% of samples failing its requirement. This is a historical percentage, not a current incident or a reconstructed failure count.
Hardness: 51 samples · reported range 207 to 247 mg CaCO3/l.
Status labels describe the published parameter and period. Historical exceedances do not automatically establish a current incident. Numerical limits are taken from the original report, not applied indiscriminately across countries, dates or sampling locations. DWI explains how standards work in England and Wales.
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Town pages for this source area
These town pages show this area's approved report. A town can span several supply areas; check your postcode for your address.