ANDOVERSFORD: supplier water report
This is a report for the named source area. Check your postcode before assuming it describes the water serving your address.
Thames Water · Supply area: ANDOVERSFORD
Published water hardness
281mg/l as CaCO₃
Hard
Hardness reporting period: 2025
4 samples · reported range 236–322 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.
2.81 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.
Scroll the chart sideways on smaller screens, or read the values below. Vertical axis: hardness in mg/l as CaCO₃. Bars show annual means.
Historical figures come from retained source copies. Supplier links may now open a newer edition. Ranges describe the samples reported, not confidence intervals. A short annual series supports a comparison; it does not establish a sustained trend or a change at your tap.
Inside the supplier report
Period: 2025. 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.
Chloride as Cl19 mg/l
Source parameter: Chloride as Cl. Published mean: 19 mg/l.
Samples: 4. Range: 11 to 26.
Source limit or reference: 250.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Fluoride as F0.23 mg/l
Source parameter: Fluoride as F. Published mean: 0.23 mg/l.
Samples: 4. Range: 0.07 to 0.40.
Source limit or reference: 1.50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Sulphate as SO441 mg/l
Source parameter: Sulphate as SO4. Published mean: 41 mg/l.
Samples: 4. Range: 26 to 52.
Source limit or reference: 250.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Hardness (Total) as CaCO3281 mg/l as CaCO₃
Source parameter: Hardness (Total) as CaCO3. Published mean: 281 mg/l as CaCO₃.
Samples: 4. Range: 236 to 322.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Alkalinity as CaCO3230 mg/l
Source parameter: Alkalinity as CaCO3. Published mean: 230 mg/l.
Samples: 4. Range: 185 to 267.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Magnesium7.8 mg/l
Source parameter: Magnesium. Published mean: 7.8 mg/l.
Samples: 4. Range: 4.8 to 9.9.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Sodium as Na13 mg/l
Source parameter: Sodium as Na. Published mean: 13 mg/l.
Samples: 4. Range: 6 to 18.
Source limit or reference: 200.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Taste, appearance and treatment 8 parameters
These are published sample results. They cannot diagnose a change in taste, smell or appearance at your tap today.
Colour (Pt/Co scale)<1.8 mg/l
Source parameter: Colour (Pt/Co scale). Published mean: <1.8 mg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <1.8 to <1.8.
Source limit or reference: 20.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Conductivity at 20°C509 µS/cm
Source parameter: Conductivity at 20°C. Published mean: 509 µS/cm.
Samples: 4. Range: 419 to 586.
Source limit or reference: 2500.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
pH (acidity / alkalinity)7.63 pH
Source parameter: Hydrogen Ion. Published mean: 7.63 pH.
Samples: 4. Range: 7.40 to 7.80.
Source limit or reference: 6.50-9.50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
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.
Source limit or reference: 4.00.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Odour (quantatative)Mean not reported dilution no.
Source parameter: Odour (quantatative). Published mean: n/a dilution no..
The source does not give a numeric mean for this entry.
Samples: 4. Range: 0 to 0.
Source limit or reference: 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Taste (quantatative)Mean not reported dilution no.
Source parameter: Taste (quantatative). Published mean: n/a dilution no..
The source does not give a numeric mean for this entry.
Samples: 4. Range: 0 to 0.
Source limit or reference: 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Chlorine (Residual)0.62 mg/l
Source parameter: Chlorine (Residual). Published mean: 0.62 mg/l.
Samples: 12. Range: 0.38 to 0.80.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Total Organic Carbon as C0.6 mg/l
Source parameter: Total Organic Carbon as C. Published mean: 0.6 mg/l.
Samples: 28. Range: 0.6 to 0.8.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Metals 13 parameters
Keep the units and sampling context when comparing results. Plumbing at an individual property can affect metal measurements.
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.
Source limit or reference: 200.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Antimony as Sb<0.3 µg/l
Source parameter: Antimony as Sb. Published mean: <0.3 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.3 to <0.3.
Source limit or reference: 5.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
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.
Source limit or reference: 10.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Boron as B0.04 mg/l
Source parameter: Boron as B. Published mean: 0.04 mg/l.
Samples: 4. Range: 0.01 to 0.07.
Source limit or reference: 1.00.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Cadmium as Cd<0.4 µg/l
Source parameter: Cadmium as Cd. Published mean: <0.4 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.4 to <0.4.
Source limit or reference: 5.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Chromium as Cr<2.5 µg/l
Source parameter: Chromium as Cr. Published mean: <2.5 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <2.5 to <2.5.
Source limit or reference: 50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Copper as Cu0.05 mg/l
Source parameter: Copper as Cu. Published mean: 0.05 mg/l.
Samples: 4. Range: 0.02 to 0.09.
Source limit or reference: 2.00.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Iron as Fe<7 µg/l
Source parameter: Iron as Fe. Published mean: <7 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <7 to <7.
Source limit or reference: 200.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
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.
Source limit or reference: 10.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Manganese as Mn<0.6 µg/l
Source parameter: Manganese as Mn. Published mean: <0.6 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.6 to <0.6.
Source limit or reference: 50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Mercury as Hg<0.07 µg/l
Source parameter: Mercury as Hg. Published mean: <0.07 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.07 to <0.07.
Source limit or reference: 1.00.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Nickel as Ni0.7 µg/l
Source parameter: Nickel as Ni. Published mean: 0.7 µg/l.
Samples: 4. Range: <0.7 to 0.8.
Source limit or reference: 20.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Selenium as Se<0.4 µg/l
Source parameter: Selenium as Se. Published mean: <0.4 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.4 to <0.4.
Source limit or reference: 10.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Microbiology 5 parameters
Open each result for sample counts and reported contraventions. An unavailable mean is not a zero result. The supplier’s investigation notes provide essential context.
Clostridium perfringensMean not reported no./100ml
Source parameter: Clostridium perfringens. Published mean: n/a no./100ml.
The source does not give a numeric mean for this entry.
Samples: 28. Range: 0 to 0.
Source limit or reference: 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Coliform bacteriaMean not reported no./100ml
Source parameter: Coliform bacteria. Published mean: n/a no./100ml.
The source does not give a numeric mean for this entry.
Samples: 12. Range: 0 to 0.
Source limit or reference: 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Colony count 22°CMean not reported no./ml
Source parameter: Colony count 22°C. Published mean: n/a no./ml.
The source does not give a numeric mean for this entry.
Samples: 4. Range: 0 to 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
E. coliMean not reported no./100ml
Source parameter: E. coli. Published mean: n/a no./100ml.
The source does not give a numeric mean for this entry.
Samples: 12. Range: 0 to 0.
Source limit or reference: 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
EnterococciMean not reported no./100ml
Source parameter: Enterococci. Published mean: n/a no./100ml.
The source does not give a numeric mean for this entry.
Samples: 4. Range: 0 to 0.
Source limit or reference: 0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Other monitored substances 38 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.
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.
Source limit or reference: 0.50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Cyanide as CN1.4 µg/l
Source parameter: Cyanide as CN. Published mean: 1.4 µg/l.
Samples: 28. Range: <1.4 to 1.9.
Source limit or reference: 50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Nitrate as NO314 mg/l
Source parameter: Nitrate as NO3. Published mean: 14.0 mg/l.
Samples: 4. Range: 6.2 to 24.6.
Source limit or reference: 50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Nitrate/Nitrite calculation0.28 mg/l
Source parameter: Nitrate/Nitrite calculation. Published mean: 0.28 mg/l.
Samples: 4. Range: 0.12 to 0.49.
Source limit or reference: 1.00.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Nitrite as NO2<0.02 mg/l
Source parameter: Nitrite as NO2. Published mean: <0.02 mg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.02 to <0.02.
Source limit or reference: 0.50.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Benzo (a) pyrene<0.001 µg/l
Source parameter: Benzo (a) pyrene. Published mean: <0.001 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.001 to <0.001.
Source limit or reference: 0.010.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
PAHs (Sum of 4 substances)0 µg/l
Source parameter: PAHs (Sum of 4 substances). Published mean: 0.000 µg/l.
Samples: 4. Range: 0.000 to 0.000.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
1,2 dichloroethane<0.1 µg/l
Source parameter: 1,2 dichloroethane. Published mean: <0.1 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.1 to <0.1.
Source limit or reference: 3.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Benzene<0.1 µg/l
Source parameter: Benzene. Published mean: <0.1 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 4. Range: <0.1 to <0.1.
Source limit or reference: 1.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Tetra- & Trichloroethene calc0 µg/l
Source parameter: Tetra- & Trichloroethene calc. Published mean: 0.0 µg/l.
Samples: 4. Range: 0.0 to 0.0.
Source limit or reference: 10.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Tetrachloromethane0.2 µg/l
Source parameter: Tetrachloromethane. Published mean: 0.2 µg/l.
Samples: 4. Range: <0.1 to 0.4.
Source limit or reference: 3.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Trihalomethanes8 µg/l
Source parameter: Trihalomethanes. Published mean: 8 µg/l.
Samples: 4. Range: 2 to 14.
Source limit or reference: 100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Bromate as BrO3<1 µg/l
Source parameter: Bromate as BrO3. Published mean: <1.0 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <1.0 to <1.0.
Source limit or reference: 10.0.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
2,4-D<0.017 µg/l
Source parameter: 2,4-D. Published mean: <0.017 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.017 to <0.017.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
2,4-DB<0.018 µg/l
Source parameter: 2,4-DB. Published mean: <0.018 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.018 to <0.018.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Atrazine<0.005 µg/l
Source parameter: Atrazine. Published mean: <0.005 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.005 to <0.005.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Bentazone<0.012 µg/l
Source parameter: Bentazone. Published mean: <0.012 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.012 to <0.012.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Bromoxynil<0.019 µg/l
Source parameter: Bromoxynil. Published mean: <0.019 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.019 to <0.019.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Carbendazim<0.009 µg/l
Source parameter: Carbendazim. Published mean: <0.009 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.009 to <0.009.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Carbetamide<0.007 µg/l
Source parameter: Carbetamide. Published mean: <0.007 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.007 to <0.007.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Chlortoluron<0.006 µg/l
Source parameter: Chlortoluron. Published mean: <0.006 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.006 to <0.006.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Clopyralid<0.023 µg/l
Source parameter: Clopyralid. Published mean: <0.023 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.023 to <0.023.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Dicamba<0.022 µg/l
Source parameter: Dicamba. Published mean: <0.022 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.022 to <0.022.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Dichlorprop<0.012 µg/l
Source parameter: Dichlorprop. Published mean: <0.012 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.012 to <0.012.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Diuron<0.006 µg/l
Source parameter: Diuron. Published mean: <0.006 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.006 to <0.006.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Fluroxypyr<0.019 µg/l
Source parameter: Fluroxypyr. Published mean: <0.019 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.019 to <0.019.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Isoproturon<0.005 µg/l
Source parameter: Isoproturon. Published mean: <0.005 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.005 to <0.005.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Linuron<0.005 µg/l
Source parameter: Linuron. Published mean: <0.005 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.005 to <0.005.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
MCPA<0.02 µg/l
Source parameter: MCPA. Published mean: <0.02 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.02 to <0.02.
Source limit or reference: 0.10.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Mecoprop<0.014 µg/l
Source parameter: Mecoprop. Published mean: <0.014 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.014 to <0.014.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Metaldehyde<0.009 µg/l
Source parameter: Metaldehyde. Published mean: <0.009 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.009 to <0.009.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Monuron<0.005 µg/l
Source parameter: Monuron. Published mean: <0.005 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.005 to <0.005.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Pentachlorophenol<0.019 µg/l
Source parameter: Pentachlorophenol. Published mean: <0.019 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.019 to <0.019.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Picloram<0.021 µg/l
Source parameter: Picloram. Published mean: <0.021 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.021 to <0.021.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Propyzamide<0.006 µg/l
Source parameter: Propyzamide. Published mean: <0.006 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.006 to <0.006.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Simazine<0.009 µg/l
Source parameter: Simazine. Published mean: <0.009 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.009 to <0.009.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Triclopyr<0.016 µg/l
Source parameter: Triclopyr. Published mean: <0.016 µg/l.
The symbol is part of the source result; do not treat this as an exact concentration.
Samples: 28. Range: <0.016 to <0.016.
Source limit or reference: 0.100.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
Total Pesticides0 µg/l
Source parameter: Total Pesticides. Published mean: 0.000 µg/l.
Samples: 30. Range: 0.000 to 0.000.
Source limit or reference: 0.500.
Samples reported as contravening the source requirement: 0. This is historical reporting, not a current incident notification.
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
- 2025
- Source retrieved
- 2026-09-06
- Last verified source check
- 2026-09-06
- Original source
- Thames Water report
Published supply-zone statistics are not a test at your home or a current incident notification.
Compliance counts describe the reporting period. Read the supplier’s annual review for investigation findings and property-specific context.
How we handle the data · Report a correction · Official supplier help and updates
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