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tapwater
England and Wales average 9.0

Tap water in ST9, Staffordshire MoorlandsSafe to drink.

Supplied by Severn Trent. 577 samples, 20 substances, latest on 30 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.5 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of ST9 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 26% of it. 16 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%Nitrite: 0.003 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Cadmium: 0.00004 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Copper: 0.0196 mg/L, <1% of the 2 mg/L limitCopper<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: 0.00016 mg/L, 2% of the 0.01 mg/L limitArsenic2%Antimony: 0.000111 mg/L, 2% of the 0.005 mg/L limitAntimony2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%Fluoride: 0.08 mg/L, 5% of the 1.5 mg/L limitFluoride5%Colour: 1.1 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%Nickel: 0.0025 mg/L, 13% of the 0.02 mg/L limitNickel13%Nitrate: 7.1 mg/L, 14% of the 50 mg/L limitNitrate14%Trihalomethanes: 0.0259 mg/L, 26% of the 0.1 mg/L limitTrihalomethanes26%
  1. Trihalomethanes26%
  2. Nitrate14%
  3. Nickel13%
  4. Aluminium11%
  5. Colour6%
  6. Fluoride5%
  7. Iron3%
  8. Turbidity3%
  9. Antimony2%
  10. Arsenic2%
  11. Manganese1%
  12. Lead1%
  13. Copper<1%
  14. Chromium<1%
  15. Cadmium<1%
  16. Nitrite<1%
  17. Selenium<1%
  • Conductivity 226 µS/cm
  • pH 7.31 pH
  • Phosphate 1.01 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
Copper0.0196 mg/L2 mg/L
<1%
Fluoride0.08 mg/L1.5 mg/L
5%
Arsenic0.00016 mg/L0.01 mg/L
2%
Cadmium0.00004 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.0025 mg/L0.02 mg/L
13%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.000111 mg/L0.005 mg/L
2%
Selenium0.00012 mg/L0.04 mg/L
<1%
Conductivity226 µS/cmNo legal limit–
Trihalomethanes0.0259 mg/L0.1 mg/L
26%
Colour1.1 mg/L Pt/Co20 mg/L Pt/Co
6%
Turbidity0.12 NTU4 NTU
3%
pH7.31 pHNo legal limit–
Nitrate7.1 mg/L50 mg/L
14%
Nitrite0.003 mg/L0.5 mg/L
<1%
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.007 mg/L0.2 mg/L
3%
Manganese0.00073 mg/L0.05 mg/L
1%
Phosphate1.01 mg/LNo legal limit–
Outside your tap

Your river is the Endon Bk, rated poor

The Environment Agency rated the Endon 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 fish, 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

34

forever-chemical detections in nearby rivers and groundwater

At 7 sites. The highest was 6:2 FTSA at 0.02 µg/L, at Leek Brook, 5.9 km away, in June 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

ST9 in short

Tap water in ST9 (Staffordshire Moorlands) is supplied by Severn Trent in the Staffordshire Moorlands Central zone and scores 9.5 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 30 December 2025.

  • The cleanest tap water of the 5 areas tested in Staffordshire MoorlandsST9 scores 9.5 out of 10, ahead of ST10 in second place on 9.4.
  • Scores higher than all 5 neighbouring districtsThe nearest rival is ST10 on 9.4, against 9.5 here. Compare with ST10
  • PFAS found at 7 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was 6:2 FTSA about 5.9 km away. What was measured

Next door

ST109.4 out of 10ST89.4 out of 10ST119.4 out of 10ST139.4 out of 10ST29.3 out of 10

Questions about ST9 water

Is ST9 tap water safe to drink?

Based on the latest tests, ST9 (Staffordshire Moorlands) water scores 9.5/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in ST9 water?

We tested 20 contaminants in ST9 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 ST9?

ST9 (Staffordshire Moorlands) 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 ST9?

ST9 water scored 9.5/10 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 ST9 water?

The tap-water tests we hold for ST9 do not include a PFAS result. Environment Agency monitoring found PFAS in 34 river and groundwater samples from 7 sites within 10 km of ST9, the highest being 6:2 FTSA at 0.02 µg/L about 5.9 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 ST9?

The Environment Agency rated the Endon 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 fish, 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 ST9, 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 ST9

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
pH7.75 pHNone
Temperature14.3 °CNone
Conductivity411 µS/cmNone
Nitrate2.5 mg/L50 mg/L
Nitrite0.016 mg/L0.5 mg/L
Phosphate0.077 mg/LNone
Dissolved Oxygen8.82 mg/LNone
Ammonia0.042 mg/L0.5 mg/L
Copper0.00371 mg/L2 mg/L
Zinc0.0103 mg/LNone
PFAS (total)0.00217 µg/LNone

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We'll email you when water quality data changes for ST9.

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