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tapwater
England and Wales average 9.0

Tap water in CV12, Nuneaton and BedworthSafe to drink.

Supplied by Severn Trent. 1,101 samples, 20 substances, latest on 18 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.0 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of CV12 water

Every bubble is a substance the lab measured. The higher it floats, the closer it came to its legal limit, the dashed line at the top.

Fluoride came closest to a limit, at 55% of it. 15 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitSelenium: 0.00012 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Cadmium: 0.00002 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Nitrite: 0.003 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Lead: 0.00014 mg/L, 1% of the 0.01 mg/L limitLead1%Manganese: 0.00096 mg/L, 2% of the 0.05 mg/L limitManganese2%Arsenic: 0.00021 mg/L, 2% of the 0.01 mg/L limitArsenic2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Copper: 0.0604 mg/L, 3% of the 2 mg/L limitCopper3%Antimony: 0.000158 mg/L, 3% of the 0.005 mg/L limitAntimony3%Nickel: 0.001 mg/L, 5% of the 0.02 mg/L limitNickel5%Iron: 0.012 mg/L, 6% of the 0.2 mg/L limitIron6%Colour: 1.2 mg/L Pt/Co, 6% of the 20 mg/L Pt/Co limitColour6%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 10.1 mg/L, 20% of the 50 mg/L limitNitrate20%Trihalomethanes: 0.0448 mg/L, 45% of the 0.1 mg/L limitTrihalomethanes45%Fluoride: 0.82 mg/L, 55% of the 1.5 mg/L limitFluoride55%
  1. Fluoride55%
  2. Trihalomethanes45%
  3. Nitrate20%
  4. Aluminium11%
  5. Iron6%
  6. Colour6%
  7. Nickel5%
  8. Antimony3%
  9. Copper3%
  10. Turbidity3%
  11. Arsenic2%
  12. Manganese2%
  13. Lead1%
  14. Chromium<1%
  15. Nitrite<1%
  16. Cadmium<1%
  17. Selenium<1%
  • pH 7.25 pH
  • Conductivity 382 µS/cm
  • Phosphate 0.941 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
Iron0.012 mg/L0.2 mg/L
6%
Manganese0.00096 mg/L0.05 mg/L
2%
Colour1.2 mg/L Pt/Co20 mg/L Pt/Co
6%
Aluminium0.021 mg/L0.2 mg/L
11%
Turbidity0.12 NTU4 NTU
3%
pH7.25 pHNo legal limit–
Conductivity382 µS/cmNo legal limit–
Copper0.0604 mg/L2 mg/L
3%
Fluoride0.82 mg/L1.5 mg/L
55%
Arsenic0.00021 mg/L0.01 mg/L
2%
Nitrate10.1 mg/L50 mg/L
20%
Nitrite0.003 mg/L0.5 mg/L
<1%
Trihalomethanes0.0448 mg/L0.1 mg/L
45%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.000158 mg/L0.005 mg/L
3%
Selenium0.00012 mg/L0.04 mg/L
<1%
Phosphate0.941 mg/LNo legal limit–
Outside your tap

Your river is the Withy Bk - source to conf R Sowe, rated poor

The Environment Agency rated the Withy Bk - source to conf R Sowe as poor for ecological health in its 2025 assessment, meaning the river is badly affected, with much of the expected wildlife missing. It is held back by water plants and algae and phosphate. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants.

None of this is a test of your tap water. Environment Agency record · River health across England

Within 10 km

24

forever-chemical detections in nearby rivers and groundwater

At 3 sites. The highest was PFHxA at 0.0038 µg/L, at Coombe Pool Coventry Lake Sample Point, 8.0 km away, in April 2025. These are river and borehole samples, not tests of your tap water.

Every PFAS sample around Coventry · Which filters remove PFAS · PFAS explained

CV12 in short

Tap water in CV12 (Nuneaton and Bedworth) is supplied by Severn Trent in the Nuneaton and Bedworth Central zone and scores 9.0 out of 10, against an England and Wales average of 9.0. None of the 20 tested substances came close to a limit. The latest sample is from 18 December 2025.

  • The cleanest tap water of the 3 areas tested in Nuneaton and BedworthCV12 scores 9 out of 10, ahead of CV10 in second place on 8.9.
  • Fluoride is the reading closest to its limit, at 55% of the 1.5 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • Scores higher than all 3 neighbouring districtsThe nearest rival is CV10 on 8.9, against 9 here. Compare with CV10

Next door

CV108.9 out of 10CV118.3 out of 10CV68.5 out of 10

Questions about CV12 water

Is CV12 tap water safe to drink?

Based on the latest tests, CV12 (Nuneaton and Bedworth) water scores 9/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in CV12 water?

We tested 20 contaminants in CV12 water. None exceeded recommended safe levels. PFAS (forever chemicals) were also measured in rivers and groundwater within 10 km, though not in the tap-water tests themselves.

Who supplies water in CV12?

CV12 (Nuneaton and Bedworth) is supplied by Severn Trent. You can view their full profile and compliance data on our supplier page.

Should I use a water filter in CV12?

CV12 water scored 9/10 with no contaminants above recommended levels. A filter is optional but can improve taste, especially if you notice a chlorine flavour. See our filter recommendations for your area.

Are there PFAS forever chemicals in CV12 water?

The tap-water tests we hold for CV12 do not include a PFAS result. Environment Agency monitoring found PFAS in 24 river and groundwater samples from 3 sites within 10 km of CV12, the highest being PFHxA at 0.0038 µg/L about 8 km away. These are environmental samples, not tests of tap water. The UK currently has no legal limit for PFAS in drinking water; the Drinking Water Inspectorate uses a 0.1 µg/L guideline for individual compounds. Reverse osmosis filters can reduce PFAS levels.

How clean is the river near CV12?

The Environment Agency rated the Withy Bk - source to conf R Sowe as poor for ecological health in its 2025 assessment, meaning the river is badly affected, with much of the expected wildlife missing. It is held back by water plants and algae and phosphate. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants. This is a rating of the river, not of tap water in CV12, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near CV12

Environment Agency samples from rivers, groundwater and reservoirs nearby. Not your tap water. For scale they are shown against drinking water limits; rivers are judged against much stricter environmental standards, and on those every river in England fails for chemicals.

SubstanceReadingDrinking water limit
pH7.5 pHNone
Temperature16.4 °CNone
Conductivity699 µS/cmNone
Ammonia0.089 mg/L0.5 mg/L
Nitrate0.41 mg/L50 mg/L
Nitrite0.039 mg/L0.5 mg/L
Phosphate0.16 mg/LNone
Dissolved Oxygen2.66 mg/LNone
Hardness (as CaCO3)453 mg/LNone
Nickel0.0051 mg/L0.02 mg/L
Copper0.003 mg/L2 mg/L
Cadmium0.00018 mg/L0.005 mg/L
Chromium0.0008 mg/L0.05 mg/L
Zinc0.0546 mg/LNone

Get alerts for your area

We'll email you when water quality data changes for CV12.

Source: Severn Trent test results, published through the Stream Water Data Portal; rivers and PFAS from the Environment Agency. Page updated . How we score · Where the data comes from