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tapwater
England and Wales average 9.0

Tap water in CV11, Nuneaton and BedworthSafe to drink.

Supplied by Severn Trent. 1,632 samples, 20 substances, latest on 19 December 2025. Everything is inside the legal limit. One result, nickel, sits close to the line.

See the filter we recommendSee everything that was tested

8.3 / 10

The tank is as full as the score.

What to do about it

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Removes nickel, the result that stood out in CV11.

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Basic chlorine and taste improvement on a budget

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Households concerned about PFAS and heavy metals

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What's in a glass of CV11 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.

Nickel came closest to a limit, at 92% of it. 14 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitNitrite: 0.003 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Selenium: 0.0003 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Arsenic: 0.00018 mg/L, 2% of the 0.01 mg/L limitArsenic2%Cadmium: 0.00009 mg/L, 2% of the 0.005 mg/L limitCadmium2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Lead: 0.0005 mg/L, 5% of the 0.01 mg/L limitLead5%Antimony: 0.000286 mg/L, 6% of the 0.005 mg/L limitAntimony6%Colour: 1.4 mg/L Pt/Co, 7% of the 20 mg/L Pt/Co limitColour7%Iron: 0.0147 mg/L, 7% of the 0.2 mg/L limitIron7%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 11.6 mg/L, 23% of the 50 mg/L limitNitrate23%Copper: 0.493 mg/L, 25% of the 2 mg/L limitCopper25%Fluoride: 0.57 mg/L, 38% of the 1.5 mg/L limitFluoride38%Trihalomethanes: 0.0506 mg/L, 51% of the 0.1 mg/L limitTrihalomethanes51%Nickel: 0.0183 mg/L, 92% of the 0.02 mg/L limitNickel92%
  1. Nickel92%
  2. Trihalomethanes51%
  3. Fluoride38%
  4. Copper25%
  5. Nitrate23%
  6. Aluminium11%
  7. Iron7%
  8. Colour7%
  9. Antimony6%
  10. Lead5%
  11. Turbidity3%
  12. Arsenic2%
  13. Cadmium2%
  14. Manganese1%
  15. Chromium<1%
  16. Selenium<1%
  17. Nitrite<1%
  • pH 7.33 pH
  • Conductivity 367 µS/cm
  • Phosphate 1 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
Nickel0.0183 mg/L0.02 mg/L
92%
pH7.33 pHNo legal limit–
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.0147 mg/L0.2 mg/L
7%
Colour1.4 mg/L Pt/Co20 mg/L Pt/Co
7%
Turbidity0.12 NTU4 NTU
3%
Manganese0.00073 mg/L0.05 mg/L
1%
Conductivity367 µS/cmNo legal limit–
Copper0.493 mg/L2 mg/L
25%
Fluoride0.57 mg/L1.5 mg/L
38%
Arsenic0.00018 mg/L0.01 mg/L
2%
Cadmium0.00009 mg/L0.005 mg/L
2%
Chromium0.00042 mg/L0.05 mg/L
<1%
Lead0.0005 mg/L0.01 mg/L
5%
Antimony0.000286 mg/L0.005 mg/L
6%
Selenium0.0003 mg/L0.04 mg/L
<1%
Nitrate11.6 mg/L50 mg/L
23%
Nitrite0.003 mg/L0.5 mg/L
<1%
Trihalomethanes0.0506 mg/L0.1 mg/L
51%
Phosphate1 mg/LNo legal limit–
Outside your tap

Your river is the Anker - source to Wem Bk, rated poor

The Environment Agency rated the Anker - source to Wem Bk 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 dissolved oxygen, 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

CV11 in short

Tap water in CV11 (Nuneaton and Bedworth) is supplied by Severn Trent in the Nuneaton and Bedworth Central zone and scores 8.3 out of 10, against an England and Wales average of 9.0. 1 of 20 tested substances was close to or over a limit. The latest sample is from 19 December 2025.

  • Nickel is within its legal limit but flagged, at 92% of the 0.02 mg/L maximumAnything over three quarters of a limit is flagged here as worth watching. It has not gone over. See every reading
  • The lowest score of the 3 areas tested in Nuneaton and BedworthCV11 scores 8.3 out of 10. The best in Nuneaton and Bedworth, CV12, scores 9.
  • 0.7 points below the national average of 9Below the typical tested district in the UK, which is worth knowing before you choose a filter. Compare every area

Next door

CV129.0 out of 10CV108.9 out of 10

Questions about CV11 water

Is CV11 tap water safe to drink?

Based on the latest tests, CV11 (Nuneaton and Bedworth) water scores 8.3/10, which is safe. 1 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in CV11 water?

We tested 20 contaminants in CV11 water. 1 were flagged, including Nickel.

Who supplies water in CV11?

CV11 (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 CV11?

With 1 contaminant above recommended levels in CV11, a water filter could help. A filter jug or under-sink filter can reduce most common contaminants. See our filter recommendations for your area.

Are there PFAS forever chemicals in CV11 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for CV11, and the Environment Agency has no PFAS detections in rivers or groundwater within 10 km of it. That reflects where sampling has happened as much as the water itself.

How clean is the river near CV11?

The Environment Agency rated the Anker - source to Wem Bk 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 dissolved oxygen, 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 CV11, which is treated before it reaches homes.

Keep reading

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

River and groundwater readings near CV11

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
Iron1.5 mg/L0.2 mg/L
pH7.52 pHNone
Temperature15.4 °CNone
Conductivity714 µS/cmNone
Ammonia0.33 mg/L0.5 mg/L
Nitrate0.88 mg/L50 mg/L
Nitrite0.082 mg/L0.5 mg/L
Phosphate0.5 mg/LNone
Dissolved Oxygen4.25 mg/LNone

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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