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tapwater
England and Wales average 9.0

Tap water in WV4, WolverhamptonSafe to drink.

Supplied by Severn Trent. 2,063 samples, 22 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

9.2 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of WV4 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 49% of it. 17 of 19 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitSelenium: 0.00007 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Copper: 0.0079 mg/L, <1% of the 2 mg/L limitCopper<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: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Arsenic: 0.00018 mg/L, 2% of the 0.01 mg/L limitArsenic2%Mercury: 0.000022 mg/L, 2% of the 0.001 mg/L limitMercury2%Antimony: 0.000114 mg/L, 2% of the 0.005 mg/L limitAntimony2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Boron: 0.03 mg/L, 3% of the 1 mg/L limitBoron3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Nickel: 0.001 mg/L, 5% of the 0.02 mg/L limitNickel5%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Trihalomethanes: 0.0247 mg/L, 25% of the 0.1 mg/L limitTrihalomethanes25%Nitrate: 12.7 mg/L, 25% of the 50 mg/L limitNitrate25%Fluoride: 0.73 mg/L, 49% of the 1.5 mg/L limitFluoride49%
  1. Fluoride49%
  2. Nitrate25%
  3. Trihalomethanes25%
  4. Aluminium11%
  5. Nickel5%
  6. Colour4%
  7. Iron3%
  8. Turbidity3%
  9. Boron3%
  10. Antimony2%
  11. Mercury2%
  12. Arsenic2%
  13. Manganese1%
  14. Lead1%
  15. Chromium<1%
  16. Nitrite<1%
  17. Cadmium<1%
  18. Copper<1%
  19. Selenium<1%
  • pH 7.05 pH
  • Conductivity 459 µS/cm
  • Phosphate 1.21 mg/L
All 22 results as a table
SubstanceResultLegal limitShare of limit
Iron0.007 mg/L0.2 mg/L
3%
Manganese0.00073 mg/L0.05 mg/L
1%
Copper0.0079 mg/L2 mg/L
<1%
Fluoride0.73 mg/L1.5 mg/L
49%
Arsenic0.00018 mg/L0.01 mg/L
2%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Mercury0.000022 mg/L0.001 mg/L
2%
Nitrate12.7 mg/L50 mg/L
25%
Nitrite0.003 mg/L0.5 mg/L
<1%
pH7.05 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Aluminium0.021 mg/L0.2 mg/L
11%
Turbidity0.12 NTU4 NTU
3%
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.000114 mg/L0.005 mg/L
2%
Selenium0.00007 mg/L0.04 mg/L
<1%
Conductivity459 µS/cmNo legal limit–
Boron0.03 mg/L1 mg/L
3%
Trihalomethanes0.0247 mg/L0.1 mg/L
25%
Phosphate1.21 mg/LNo legal limit–
Outside your tap

Your river is the Merryhill Bk - source to conf Wom-Penn Bk, rated moderate

The Environment Agency rated the Merryhill Bk - source to conf Wom-Penn Bk as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by phosphate and water plants and algae. 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

13

forever-chemical detections in nearby rivers and groundwater

At 6 sites. The highest was 6:2 FTSA at 0.016 µg/L, at Clive Farm Borehole F81/15, Wolverhampton, 7.9 km away, in July 2023. These are river and borehole samples, not tests of your tap water.

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

WV4 in short

Tap water in WV4 (Wolverhampton) is supplied by Severn Trent in the Wolverhampton Central zone and scores 9.2 out of 10, against an England and Wales average of 9.0. None of the 22 tested substances came close to a limit. The latest sample is from 18 December 2025.

  • The cleanest tap water of the 8 areas tested in WolverhamptonWV4 scores 9.2 out of 10, ahead of WV14 in second place on 9. Every area in Wolverhampton
  • Scores higher than all 9 neighbouring districtsThe nearest rival is WV14 on 9, against 9.2 here. Compare with WV14
  • Fluoride is the reading closest to its limit, at 49% of the 1.5 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading

Next door

WV68.6 out of 10WV108.7 out of 10WV149.0 out of 10WV118.9 out of 10WV18.8 out of 10WV28.7 out of 10WV38.7 out of 10DY38.6 out of 10DY18.9 out of 10

Questions about WV4 water

Is WV4 tap water safe to drink?

Based on the latest tests, WV4 (Wolverhampton) water scores 9.2/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in WV4 water?

We tested 22 contaminants in WV4 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 WV4?

WV4 (Wolverhampton) 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 WV4?

WV4 water scored 9.2/10 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 WV4 water?

The tap-water tests we hold for WV4 do not include a PFAS result. Environment Agency monitoring found PFAS in 13 river and groundwater samples from 6 sites within 10 km of WV4, the highest being 6:2 FTSA at 0.016 µg/L about 7.9 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 WV4?

The Environment Agency rated the Merryhill Bk - source to conf Wom-Penn Bk as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by phosphate and water plants and algae. 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 WV4, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsAll of WolverhamptonUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near WV4

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
Ammonia0.52 mg/L0.5 mg/L
pH7.83 pHNone
Temperature11.5 °CNone
Conductivity382 µS/cmNone
Nitrate2.8 mg/L50 mg/L
Nitrite0.1 mg/L0.5 mg/L
Phosphate0.11 mg/LNone
Dissolved Oxygen8.88 mg/LNone
Lead0.0028 mg/L0.01 mg/L
Cadmium0.00056 mg/L0.005 mg/L
Copper0.012 mg/L2 mg/L
Zinc0.229 mg/LNone
Chromium0.0012 mg/L0.05 mg/L

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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