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tapwater
England and Wales average 9.0

Tap water in ST6, Stoke-on-TrentSafe to drink.

Supplied by Severn Trent. 1,126 samples, 20 substances, latest on 24 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.3 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of ST6 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.

Trihalomethanes came closest to a limit, at 28% of it. 16 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitSelenium: 0.0002 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%Cadmium: 0.00006 mg/L, 1% of the 0.005 mg/L limitCadmium1%Copper: 0.0287 mg/L, 1% of the 2 mg/L limitCopper1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Antimony: 0.000097 mg/L, 2% of the 0.005 mg/L limitAntimony2%Arsenic: 0.00022 mg/L, 2% of the 0.01 mg/L limitArsenic2%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%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%Fluoride: 0.08 mg/L, 5% of the 1.5 mg/L limitFluoride5%Lead: 0.00085 mg/L, 9% of the 0.01 mg/L limitLead9%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nickel: 0.0023 mg/L, 12% of the 0.02 mg/L limitNickel12%Nitrate: 11.7 mg/L, 23% of the 50 mg/L limitNitrate23%Trihalomethanes: 0.0283 mg/L, 28% of the 0.1 mg/L limitTrihalomethanes28%
  1. Trihalomethanes28%
  2. Nitrate23%
  3. Nickel12%
  4. Aluminium11%
  5. Lead9%
  6. Fluoride5%
  7. Colour4%
  8. Iron3%
  9. Turbidity3%
  10. Nitrite3%
  11. Arsenic2%
  12. Antimony2%
  13. Manganese1%
  14. Copper1%
  15. Cadmium1%
  16. Chromium<1%
  17. Selenium<1%
  • Conductivity 284 µS/cm
  • pH 7.26 pH
  • Phosphate 0.791 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.007 mg/L0.2 mg/L
3%
Conductivity284 µS/cmNo legal limit–
Manganese0.00073 mg/L0.05 mg/L
1%
pH7.26 pHNo legal limit–
Nitrate11.7 mg/L50 mg/L
23%
Nitrite0.013 mg/L0.5 mg/L
3%
Copper0.0287 mg/L2 mg/L
1%
Fluoride0.08 mg/L1.5 mg/L
5%
Arsenic0.00022 mg/L0.01 mg/L
2%
Cadmium0.00006 mg/L0.005 mg/L
1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.0023 mg/L0.02 mg/L
12%
Lead0.00085 mg/L0.01 mg/L
9%
Antimony0.000097 mg/L0.005 mg/L
2%
Selenium0.0002 mg/L0.04 mg/L
<1%
Trihalomethanes0.0283 mg/L0.1 mg/L
28%
Phosphate0.791 mg/LNo legal limit–
Outside your tap

Your river is the Fowlea Brook from Source to River Trent, rated moderate

The Environment Agency rated the Fowlea Brook from Source to River Trent as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by insects and other small river life and specific pollutants. 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

97

forever-chemical detections in nearby rivers and groundwater

At 4 sites. The highest was PFOA at 0.028 µg/L, at RSN0342 Lyme Brook, 7.0 km away, in February 2024. These are river and borehole samples, not tests of your tap water.

Every PFAS sample around Stoke-on-Trent · Which filters remove PFAS · PFAS explained

ST6 in short

Tap water in ST6 (Stoke-on-Trent) is supplied by Severn Trent in the Stoke-on-Trent Central zone and scores 9.3 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 24 December 2025.

  • The lowest score of the 5 areas tested in Stoke-on-TrentST6 scores 9.3 out of 10. The best in Stoke-on-Trent, ST1, scores 9.4. Every area in Stoke-on-Trent
  • PFAS found at 4 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFOA about 7 km away. What was measured
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 28% of the 0.1 mg/L maximum. See every reading

Next door

ST39.4 out of 10ST49.4 out of 10ST19.4 out of 10ST29.3 out of 10

Questions about ST6 water

Is ST6 tap water safe to drink?

Based on the latest tests, ST6 (Stoke-on-Trent) water scores 9.3/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in ST6 water?

We tested 20 contaminants in ST6 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 ST6?

ST6 (Stoke-on-Trent) 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 ST6?

ST6 water scored 9.3/10 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 ST6 water?

The tap-water tests we hold for ST6 do not include a PFAS result. Environment Agency monitoring found PFAS in 97 river and groundwater samples from 4 sites within 10 km of ST6, the highest being PFOA at 0.028 µg/L about 7 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 ST6?

The Environment Agency rated the Fowlea Brook from Source to River Trent as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by insects and other small river life and specific pollutants. 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 ST6, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsAll of Stoke-on-TrentUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near ST6

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
pH7.79 pHNone
Temperature15.9 °CNone
Ammonia0.042 mg/L0.5 mg/L
Nitrate1.6 mg/L50 mg/L
Nitrite0.021 mg/L0.5 mg/L
Phosphate0.17 mg/LNone
Dissolved Oxygen8.44 mg/LNone
Conductivity809 µS/cmNone
Copper0.00157 mg/L2 mg/L
Zinc0.00852 mg/LNone

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We'll email you when water quality data changes for ST6.

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