BATHEASTON: 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
Very 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.
319.3 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
40 parameters: no exceedances reported
These labels describe 2025. 5 other parameters have no complete compliance judgement here. They are not a guarantee about an individual tap today.
Understand the reported results ↓Make this useful for your home
Hardness reporting period: Reporting period not retained in the cached source · Quality reporting period: 2025
Hardness comes from a separate retained supplier source. Its period must not be assumed to match the quality report.
Appliance settings · Convert hardness units
3.19 mmol/l
A conversion of the published hardness, not another test. Follow your appliance’s model-specific instructions.
The automated collector cannot currently retrieve this source. This is the retained approved report; check the supplier for newer information. Original supplier report ↗
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.
E. coli
✓ No exceedances reported
Published mean
0 No. /100ml
Source reference: 0 No. /100ml
A microbiological indicator. The reported sample results and any failures matter more than an average bacterial count.
61 samples · Range: 0 to 0 No. /100ml
The source reports 0% failing its requirement across 61 samples. This describes the published period.
Lead
✓ No exceedances reported
Published mean
<0.4 μg/l
Source reference: 10 μg/l
Plumbing can affect lead at an individual tap. An area average cannot rule out a problem with pipes at your property.
8 samples · Range: < 0.1 to 1.0 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Nitrate
✓ No exceedances reported
Published mean
9.57 mg/l NO3
Source reference: 50 mg/l NO3
A dissolved compound monitored against drinking-water requirements. Its mean, highest reported result and sample count answer different questions.
8 samples · Range: 8.10 to 10.53 mg/l NO3
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Fluoride
✓ No exceedances reported
Published mean
0.34 mg/l
Source reference: 1.5 mg/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.
8 samples · Range: 0.28 to 0.36 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
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 ↓Total 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 ↓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 · 45 parameters · 2025
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 40 of these parameters: “Source percentage of samples exceeding the limit: 0%. This is not a count of failed samples.”
Source note on 5 of these parameters: “The source does not report an exceedance percentage.”
Hardness and minerals 4 parameters
Chloride
✓ No exceedances reported
Published mean
29 mg/l
Source reference: 250 mg/l
A dissolved salt component that can influence taste at higher concentrations. It is different from chlorine used in treatment.
8 samples · Range: 26 to 34 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 250 mg/l. Source parameter: Chloride. Original mean: 29 mg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Fluoride
✓ No exceedances reported
Published mean
0.34 mg/l
Source reference: 1.5 mg/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.
8 samples · Range: 0.28 to 0.36 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 1.5 mg/l. Source parameter: Fluoride. Original mean: 0.34 mg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Sodium
✓ No exceedances reported
Published mean
19.0 mg/l
Source reference: 200 mg/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: 17.0 to 21.9 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 200 mg/l. Source parameter: Sodium. Original mean: 19.0 mg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Sulphate
✓ No exceedances reported
Published mean
55 mg/l
Source reference: 250 mg/l
A dissolved mineral component monitored in water-quality reports. Read its concentration alongside the source reference.
8 samples · Range: 53 to 59 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 250 mg/l. Source parameter: Sulphate. Original mean: 55 mg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Taste, appearance and treatment 8 parameters
Free chlorine residual
No numerical limit supplied
Published mean
<0.30 mg/l
Source reference: Not supplied
Disinfectant remaining after treatment. It can influence taste and smell; a lower concentration is not automatically better.
60 samples · Range: < 0.06 to 0.54 mg/l
This report gives no numerical limit for this parameter. A higher or lower number is not automatically better.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: Not supplied. Source parameter: Chlorine - Free. Original mean: < 0.30 mg/l.
Source note: printed once above this list (the same note appears on 5 parameters).
Total chlorine residual
No numerical limit supplied
Published mean
0.35 mg/l
Source reference: Not supplied
Disinfectant remaining after treatment. It can influence taste and smell; a lower concentration is not automatically better.
60 samples · Range: 0.11 to 0.57 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: Not supplied. Source parameter: Chlorine - Total. Original mean: 0.35 mg/l.
Source note: printed once above this list (the same note appears on 5 parameters).
Colour
✓ No exceedances reported
Published mean
<0.8 °Hazen
Source reference: 20 °Hazen
A measure of water colour under test conditions. A new change at your tap should be checked with your supplier.
24 samples · Range: < 0.8 to 1.0 °Hazen
The source reports 0% failing its requirement across 24 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 20 °Hazen. Source parameter: Colour. Original mean: < 0.8 °Hazen.
Source note: printed once above this list (the same note appears on 40 parameters).
Conductivity
✓ No exceedances reported
Published mean
604 μS/cm @ 20 °C
Source reference: 2500 μS/cm @ 20 °C
Indicates how readily water conducts electricity, influenced by dissolved ions. It is not a direct measurement of hardness or safety.
24 samples · Range: 573 to 630 μS/cm @ 20 °C
The source reports 0% failing its requirement across 24 samples. This describes the published period.
Original wording and source notes
Source reference: 2500 μS/cm @ 20 °C. Source parameter: Conductivity. Original mean: 604 μS/cm @ 20 °C.
Source note: printed once above this list (the same note appears on 40 parameters).
pH
✓ No exceedances reported
Published mean
7.43 pH value
Source reference: 6.5 min - 9.5 max pH value
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.
24 samples · Range: 7.30 to 7.70 pH value
The source reports 0% failing its requirement across 24 samples. This describes the published period.
Original wording and source notes
Source reference: 6.5 min - 9.5 max pH value. Source parameter: Hydrogen ion (pH). Original mean: 7.43 pH value.
Source note: printed once above this list (the same note appears on 40 parameters).
Odour
✓ No exceedances reported
Published mean
0 Dilution Number
Source reference: 0 Dilution Number
A sensory assessment of smell in the sampled water. It cannot identify the cause of a current change at your tap.
24 samples · Range: 0 to 0 Dilution Number
The source reports 0% failing its requirement across 24 samples. This describes the published period.
Original wording and source notes
Source reference: 0 Dilution Number. Source parameter: Odour. Original mean: 0 Dilution Number.
Source note: printed once above this list (the same note appears on 40 parameters).
Taste
✓ No exceedances reported
Published mean
0 Dilution Number
Source reference: 0 Dilution Number
A sensory assessment of the sampled water. It cannot explain a new taste at your home today.
24 samples · Range: 0 to 0 Dilution Number
The source reports 0% failing its requirement across 24 samples. This describes the published period.
Original wording and source notes
Source reference: 0 Dilution Number. Source parameter: Taste. Original mean: 0 Dilution Number.
Source note: printed once above this list (the same note appears on 40 parameters).
Total organic carbon
No numerical limit supplied
Published mean
0.9 mg/l
Source reference: Not supplied
A broad measure of organic carbon used to understand water and treatment. It does not identify an individual contaminant.
8 samples · Range: 0.8 to 1.2 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: Not supplied. Source parameter: Total Organic Carbon. Original mean: 0.9 mg/l.
Source note: printed once above this list (the same note appears on 5 parameters).
Metals 11 parameters
Aluminium
✓ No exceedances reported
Published mean
<10.0 μg/l
Source reference: 200 μg/l
Monitored as part of water-quality testing and treatment control. Compare with the reference and sample results in the source.
24 samples · Range: < 10.0 to < 10.0 μg/l
The source reports 0% failing its requirement across 24 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 200 μg/l. Source parameter: Aluminium. Original mean: < 10.0 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Antimony
✓ No exceedances reported
Published mean
<0.20 μg/l
Source reference: 5 μg/l
A trace element monitored in drinking water. The source reference and sample results provide the relevant comparison.
8 samples · Range: < 0.20 to < 0.20 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 5 μg/l. Source parameter: Antimony. Original mean: < 0.20 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Arsenic
✓ No exceedances reported
Published mean
<0.40 μg/l
Source reference: 10 μg/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: < 0.40 to < 0.40 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10 μg/l. Source parameter: Arsenic. Original mean: < 0.40 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Boron
✓ No exceedances reported
Published mean
0.064 mg/l
Source reference: 1 mg/l
A dissolved element monitored in drinking water. The source reference applies to the parameter and units shown here.
8 samples · Range: 0.060 to 0.070 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 1 mg/l. Source parameter: Boron. Original mean: 0.064 mg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Cadmium
✓ No exceedances reported
Published mean
<0.10 μg/l
Source reference: 5 μg/l
A trace metal monitored in drinking water. A less-than result reports an upper bound, not a measured zero.
8 samples · Range: < 0.10 to < 0.10 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 5 μg/l. Source parameter: Cadmium. Original mean: < 0.10 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Chromium
✓ No exceedances reported
Published mean
<1.00 μg/l
Source reference: 50 μg/l
A trace metal monitored in drinking-water reports. Keep the source’s chemical definition and units when comparing results.
8 samples · Range: < 1.00 to < 1.00 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 50 μg/l. Source parameter: Chromium. Original mean: < 1.00 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Copper
✓ No exceedances reported
Published mean
<0.17 mg/l
Source reference: 2 mg/l
Can be influenced by plumbing. The area report does not replace investigation of a problem at an individual property.
8 samples · Range: < 0.01 to 0.60 mg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 2 mg/l. Source parameter: Copper. Original mean: < 0.17 mg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Iron
✓ No exceedances reported
Published mean
<6.9 μg/l
Source reference: 200 μg/l
Can affect water colour, staining and taste. A historical result does not diagnose a change in your tap water today.
24 samples · Range: < 3.0 to 79.0 μg/l
The source reports 0% failing its requirement across 24 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 200 μg/l. Source parameter: Iron. Original mean: < 6.9 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Lead
✓ No exceedances reported
Published mean
<0.4 μg/l
Source reference: 10 μg/l
Plumbing can affect lead at an individual tap. An area average cannot rule out a problem with pipes at your property.
8 samples · Range: < 0.1 to 1.0 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10 μg/l. Source parameter: Lead. Original mean: < 0.4 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Manganese
✓ No exceedances reported
Published mean
<0.5 μg/l
Source reference: 50 μg/l
Can affect colour and deposits. Any reported exceedance needs the supplier’s investigation context.
24 samples · Range: < 0.3 to 3.8 μg/l
The source reports 0% failing its requirement across 24 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 50 μg/l. Source parameter: Manganese. Original mean: < 0.5 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Nickel
✓ No exceedances reported
Published mean
<1.50 μg/l
Source reference: 20 μg/l
A monitored metal that can be influenced by materials in contact with water. Local plumbing and sampling context matter.
8 samples · Range: < 1.00 to 4.00 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 20 μg/l. Source parameter: Nickel. Original mean: < 1.50 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Microbiology 3 parameters
Coliform bacteria
✓ No exceedances reported
Published mean
0 No. /100ml
Source reference: 0 No. /100ml
Used to monitor water-system hygiene. Interpret detections with the supplier’s sampling location and investigation notes.
60 samples · Range: 0 to 0 No. /100ml
The source reports 0% failing its requirement across 60 samples. This describes the published period.
Original wording and source notes
Source reference: 0 No. /100ml. Source parameter: Coliform Bacteria. Original mean: 0 No. /100ml.
Source note: printed once above this list (the same note appears on 40 parameters).
Enterococci
✓ No exceedances reported
Published mean
0 No. /100ml
Source reference: 0 No. /100ml
A microbiological indicator assessed through sample results. Read any reported failures with the supplier’s investigation notes.
8 samples · Range: 0 to 0 No. /100ml
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 0 No. /100ml. Source parameter: Enterococci. Original mean: 0 No. /100ml.
Source note: printed once above this list (the same note appears on 40 parameters).
E. coli
✓ No exceedances reported
Published mean
0 No. /100ml
Source reference: 0 No. /100ml
A microbiological indicator. The reported sample results and any failures matter more than an average bacterial count.
61 samples · Range: 0 to 0 No. /100ml
The source reports 0% failing its requirement across 61 samples. This describes the published period.
Original wording and source notes
Source reference: 0 No. /100ml. Source parameter: Escherichia coli (E. coli). Original mean: 0 No. /100ml.
Source note: printed once above this list (the same note appears on 40 parameters).
Other monitored substances 19 parameters
1 2-Dichloroethane
✓ No exceedances reported
Published mean
<0.120 μg/l
Source reference: 3 μg/l
About this parameter: see the note above this list.
8 samples · Range: < 0.120 to < 0.120 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 3 μg/l. Source parameter: 1 2-Dichloroethane. Original mean: < 0.120 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Aldrin
✓ No exceedances reported
Published mean
<0.008 μg/l
Source reference: 0.03 μg/l
About this parameter: see the note above this list.
2 samples · Range: < 0.008 to < 0.008 μg/l
The source reports 0% failing its requirement across 2 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.03 μg/l. Source parameter: Aldrin. Original mean: < 0.008 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Ammonium
✓ No exceedances reported
Published mean
<0.03 mg/l NH4
Source reference: 0.5 mg/l NH4
About this parameter: see the note above this list.
8 samples · Range: < 0.03 to < 0.03 mg/l NH4
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” 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 mg/l NH4. Source parameter: Ammonium. Original mean: < 0.03 mg/l NH4.
Source note: printed once above this list (the same note appears on 40 parameters).
Benzene
✓ No exceedances reported
Published mean
<0.090 μg/l
Source reference: 1 μg/l
About this parameter: see the note above this list.
8 samples · Range: < 0.090 to < 0.090 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 1 μg/l. Source parameter: Benzene. Original mean: < 0.090 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Benzo [a] Pyrene
✓ No exceedances reported
Published mean
<0.0007 μg/l
Source reference: 0.01 μg/l
About this parameter: see the note above this list.
8 samples · Range: < 0.0007 to < 0.0007 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” 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 μg/l. Source parameter: Benzo [a] Pyrene. Original mean: < 0.0007 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Bromate
✓ No exceedances reported
Published mean
<0.400 μg/l
Source reference: 10 μg/l
About this parameter: see the note above this list.
8 samples · Range: < 0.400 to < 0.400 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10 μg/l. Source parameter: Bromate. Original mean: < 0.400 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Colony Count (3 day at 22°C)
No numerical limit supplied
Published mean
1 No. /ml
Source reference: Not supplied
About this parameter: see the note above this list.
24 samples · Range: 0 to 13 No. /ml
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: Not supplied. Source parameter: Colony Count (3 day at 22°C). Original mean: 1 No. /ml.
Source note: printed once above this list (the same note appears on 5 parameters).
Dieldrin
✓ No exceedances reported
Published mean
<0.005 μg/l
Source reference: 0.03 μg/l
About this parameter: see the note above this list.
2 samples · Range: < 0.005 to < 0.005 μg/l
The source reports 0% failing its requirement across 2 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.03 μg/l. Source parameter: Dieldrin. Original mean: < 0.005 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Heptachlor
✓ No exceedances reported
Published mean
<0.005 μg/l
Source reference: 0.03 μg/l
About this parameter: see the note above this list.
2 samples · Range: < 0.005 to < 0.005 μg/l
The source reports 0% failing its requirement across 2 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.03 μg/l. Source parameter: Heptachlor. Original mean: < 0.005 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Heptachlor Epoxide
✓ No exceedances reported
Published mean
<0.004 μg/l
Source reference: 0.03 μg/l
About this parameter: see the note above this list.
2 samples · Range: < 0.004 to < 0.004 μg/l
The source reports 0% failing its requirement across 2 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 0.03 μg/l. Source parameter: Heptachlor Epoxide. Original mean: < 0.004 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Nitrate
✓ No exceedances reported
Published mean
9.57 mg/l NO3
Source reference: 50 mg/l NO3
A dissolved compound monitored against drinking-water requirements. Its mean, highest reported result and sample count answer different questions.
8 samples · Range: 8.10 to 10.53 mg/l NO3
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 50 mg/l NO3. Source parameter: Nitrate. Original mean: 9.57 mg/l NO3.
Source note: printed once above this list (the same note appears on 40 parameters).
Nitrite in Distribution
✓ No exceedances reported
Published mean
<0.01 mg/l NO2
Source reference: 0.5 mg/l NO2
About this parameter: see the note above this list.
8 samples · Range: < 0.01 to < 0.01 mg/l NO2
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” 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 mg/l NO2. Source parameter: Nitrite in Distribution. Original mean: < 0.01 mg/l NO2.
Source note: printed once above this list (the same note appears on 40 parameters).
Nitrite/Nitrate ratio
✓ No exceedances reported
Published mean
<0.10 -
Source reference: 1 - -
About this parameter: see the note above this list.
8 samples · Range: < 0.10 to < 0.10 -
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” 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: Nitrite/Nitrate ratio. Original mean: < 0.10 -.
Source note: printed once above this list (the same note appears on 40 parameters).
Polycyclic Aromatic Hydrocarbons
✓ No exceedances reported
Published mean
0.001 μg/l
Source reference: 0.1 μg/l
About this parameter: see the note above this list.
8 samples · Range: 0.000 to 0.003 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 0.1 μg/l. Source parameter: Polycyclic Aromatic Hydrocarbons. Original mean: 0.001 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Sulphite-reducing Clostridia
No numerical limit supplied
Published mean
0 No. /100ml
Source reference: Not supplied
About this parameter: see the note above this list.
8 samples · Range: 0 to 0 No. /100ml
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: Not supplied. Source parameter: Sulphite-reducing Clostridia. Original mean: 0 No. /100ml.
Source note: printed once above this list (the same note appears on 5 parameters).
Sum of Tri & Tetrachloroethenes
✓ No exceedances reported
Published mean
<0.060 μg/l
Source reference: 10 μg/l
About this parameter: see the note above this list.
8 samples · Range: < 0.060 to < 0.060 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 10 μg/l. Source parameter: Sum of Tri & Tetrachloroethenes. Original mean: < 0.060 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Tetrachloromethane
✓ No exceedances reported
Published mean
<0.080 μg/l
Source reference: 3 μg/l
About this parameter: see the note above this list.
8 samples · Range: < 0.080 to < 0.080 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 3 μg/l. Source parameter: Tetrachloromethane. Original mean: < 0.080 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Trihalomethanes (Total)
✓ No exceedances reported
Published mean
12.374 μg/l
Source reference: 100 μg/l
About this parameter: see the note above this list.
8 samples · Range: 4.910 to 20.010 μg/l
The source reports 0% failing its requirement across 8 samples. This describes the published period.
Original wording and source notes
Source reference: 100 μg/l. Source parameter: Trihalomethanes (Total). Original mean: 12.374 μg/l.
Source note: printed once above this list (the same note appears on 40 parameters).
Turbidity (Distribution)
✓ No exceedances reported
Published mean
<0.09 NTU
Source reference: 4 NTU
About this parameter: see the note above this list.
24 samples · Range: < 0.06 to 0.55 NTU
The source reports 0% failing its requirement across 24 samples. This describes the published period.
“<” is part of the source result. It is not an exact concentration or a measured zero.
Original wording and source notes
Source reference: 4 NTU. Source parameter: Turbidity (Distribution). Original mean: < 0.09 NTU.
Source note: printed once above this list (the same note appears on 40 parameters).
Separate hardness publication · Reporting period not retained in the cached source
These mineral results come from the retained hardness source and have their own reporting period.
Hardness and minerals 1 parameters
Total hardness
No numerical limit supplied
Published mean
319.3 mg/l as CaCO₃
Source reference: Not supplied
Dissolved calcium and magnesium affect limescale and appliance settings. This is a mineral description, not a safety score.
Sample count not supplied · Range: — to — mg/l as CaCO₃
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: Not supplied. Source parameter: hardness. Original mean: 319.3 mg/l as CaCO₃.
Sources, dates and how to interpret this page
- Reporting period
- 2025
- Source retrieved
- 2026-09-06
- Last verified source check
- 2026-09-06
- Original publication
- Wessex Water report ↗
Downloaded from the official PDF through the browser. Hosted collection is restricted; the weekly browser review maintains this source.
The full PDF reports 2025 quality samples. Its rounded and qualified results differ from the website summary. Hardness is not listed in this PDF and is not inferred.
Exceedance percentages are retained for each parameter. They describe the reporting year, not today’s supply; ask Wessex for investigation context and current advice.
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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