AYLESBURY EAST: supplier water report
This is a report for the named source area. Check your postcode before assuming it describes the water serving your address.
A newer source document is awaiting validation. The figures below are from the approved reporting period shown. Official supplier information
Thames Water · Supply area: AYLESBURY EAST
Published water hardness
296mg/l as CaCO₃
Hard
Hardness reporting period: 2024
4 samples · reported range 289–300 mg/l
This hardness can contribute to limescale in kettles and appliances. Use the units in your appliance manual and follow its care instructions. Hardness is not a health or safety score.
2.96 mmol/l
A conversion of the published hardness, not another test. Follow your appliance’s model-specific instructions.
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.
Inside the supplier report
Period: 2024. Summary values do not establish that every sample complied. Read the supplier’s notes for investigations and actions.
Hardness and minerals 7 parameters
Useful for understanding mineral composition and appliance settings. Different minerals are separate measurements; hardness does not determine them all.
Hardness (Total) as CaCO3296 mg/l as CaCO₃
Source parameter: Hardness (Total) as CaCO3. Published mean: 296 mg/l as CaCO₃.
Samples: 4. Range: 289 to 300.
Compliance counts are not retained for this entry. Check the original report.
Fluoride as F0.1 mg/l
Source parameter: Fluoride as F. Published mean: 0.1 mg/l.
Samples: 4. Range: 0.09 to 0.11.
Compliance counts are not retained for this entry. Check the original report.
Magnesium2.4 mg/l
Source parameter: Magnesium. Published mean: 2.4 mg/l.
Samples: 4. Range: 2 to 2.6.
Compliance counts are not retained for this entry. Check the original report.
Alkalinity as CaCO3254 mg/l as CaCO₃
Source parameter: Alkalinity as CaCO3. Published mean: 254 mg/l as CaCO₃.
Samples: 4. Range: 249 to 257.
Compliance counts are not retained for this entry. Check the original report.
Sodium as Na12 mg/l
Source parameter: Sodium as Na. Published mean: 12 mg/l.
Samples: 4. Range: 10 to 13.
Compliance counts are not retained for this entry. Check the original report.
Chloride as Cl22 mg/l
Source parameter: Chloride as Cl. Published mean: 22 mg/l.
Samples: 4. Range: 20 to 22.
Compliance counts are not retained for this entry. Check the original report.
Sulphate as SO419 mg/l
Source parameter: Sulphate as SO4. Published mean: 19 mg/l.
Samples: 4. Range: 16 to 21.
Compliance counts are not retained for this entry. Check the original report.
Taste, appearance and treatment 5 parameters
These are published sample results. They cannot diagnose a change in taste, smell or appearance at your tap today.
pH (acidity / alkalinity)7.3 pH units
Source parameter: Hydrogen Ion. Published mean: 7.3 pH units.
Samples: 4. Range: 7.2 to 7.3.
Compliance counts are not retained for this entry. Check the original report.
Chlorine (Residual)0.48 mg/l
Source parameter: Chlorine (Residual). Published mean: 0.48 mg/l.
Samples: 12. Range: 0.27 to 0.6.
Compliance counts are not retained for this entry. Check the original report.
Colour<1.8 mg/l Pt/Co
Source parameter: Colour. Published mean: <1.8 mg/l Pt/Co.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <1.8 to <1.8.
Compliance counts are not retained for this entry. Check the original report.
Turbidity<0.09 FTU
Source parameter: Turbidity. Published mean: <0.09 FTU.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.09 to <0.09.
Compliance counts are not retained for this entry. Check the original report.
Conductivity534 µS/cm
Source parameter: Conductivity. Published mean: 534 µS/cm.
Samples: 4. Range: 518 to 544.
Compliance counts are not retained for this entry. Check the original report.
Metals 8 parameters
Keep the units and sampling context when comparing results. Plumbing at an individual property can affect metal measurements.
Lead as Pb<0.9 µg/l
Source parameter: Lead as Pb. Published mean: <0.9 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.9 to <0.9.
Compliance counts are not retained for this entry. Check the original report.
Iron as Fe5 µg/l
Source parameter: Iron as Fe. Published mean: 5 µg/l.
Samples: 4. Range: <5 to 6.
Compliance counts are not retained for this entry. Check the original report.
Aluminium as Al<8.2 µg/l
Source parameter: Aluminium as Al. Published mean: <8.2 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <8.2 to <8.2.
Compliance counts are not retained for this entry. Check the original report.
Copper as Cu0.028 mg/l
Source parameter: Copper as Cu. Published mean: 0.028 mg/l.
Samples: 4. Range: <0.014 to 0.065.
Compliance counts are not retained for this entry. Check the original report.
Manganese as Mn<0.5 µg/l
Source parameter: Manganese as Mn. Published mean: <0.5 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.5 to <0.5.
Compliance counts are not retained for this entry. Check the original report.
Nickel as Ni1.4 µg/l
Source parameter: Nickel as Ni. Published mean: 1.4 µg/l.
Samples: 4. Range: 0.7 to 3.4.
Compliance counts are not retained for this entry. Check the original report.
Arsenic as As<0.7 µg/l
Source parameter: Arsenic as As. Published mean: <0.7 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.7 to <0.7.
Compliance counts are not retained for this entry. Check the original report.
Selenium as Se0.5 µg/l
Source parameter: Selenium as Se. Published mean: 0.5 µg/l.
Samples: 4. Range: 0.4 to 0.5.
Compliance counts are not retained for this entry. Check the original report.
Other monitored substances 4 parameters
The source names are retained so you can find the same entry in the original report. A less-than symbol means the reported number is not an exact concentration.
Nitrate as NO326 mg/l
Source parameter: Nitrate as NO3. Published mean: 26 mg/l.
Samples: 4. Range: 24 to 30.
Compliance counts are not retained for this entry. Check the original report.
Trihalomethanes10 µg/l
Source parameter: Trihalomethanes. Published mean: 10 µg/l.
Samples: 4. Range: 8 to 13.
Compliance counts are not retained for this entry. Check the original report.
Bromate<0.5 µg/l
Source parameter: Bromate. Published mean: <0.5 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 32. Range: <0.5 to <0.5.
Compliance counts are not retained for this entry. Check the original report.
Ammonium as NH4<0.03 mg/l
Source parameter: Ammonium as NH4. Published mean: <0.03 mg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.03 to <0.03.
Compliance counts are not retained for this entry. Check the original report.
Unlisted parameters are not necessarily absent from the water. They may be unavailable in this extraction. The full supplier report remains the primary reference.
Source, dates and help
- Reporting period
- 2024
- Source retrieved
- 2026-02-27
- Last verified source check
- 2026-09-06
- Original source
- Thames Water report
Published area statistics are not a test at your home or a current incident report.
How we handle the data · Report a correction · Official supplier help and updates
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