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tapwater
England and Wales average 9.0

Tap water in ST11, Staffordshire MoorlandsSafe to drink.

Supplied by Severn Trent. 330 samples, 20 substances, latest on 22 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.4 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of ST11 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.

Nitrate came closest to a limit, at 59% of it. 16 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 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%Selenium: 0.00024 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%Antimony: 0.000059 mg/L, 1% of the 0.005 mg/L limitAntimony1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Copper: 0.0484 mg/L, 2% of the 2 mg/L limitCopper2%Fluoride: 0.04 mg/L, 3% of the 1.5 mg/L limitFluoride3%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%Arsenic: 0.00037 mg/L, 4% of the 0.01 mg/L limitArsenic4%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Lead: 0.00041 mg/L, 4% of the 0.01 mg/L limitLead4%Trihalomethanes: 0.0046 mg/L, 5% of the 0.1 mg/L limitTrihalomethanes5%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%Nitrate: 29.4 mg/L, 59% of the 50 mg/L limitNitrate59%
  1. Nitrate59%
  2. Aluminium11%
  3. Nickel5%
  4. Trihalomethanes5%
  5. Lead4%
  6. Colour4%
  7. Arsenic4%
  8. Iron3%
  9. Turbidity3%
  10. Fluoride3%
  11. Copper2%
  12. Manganese1%
  13. Antimony1%
  14. Chromium<1%
  15. Nitrite<1%
  16. Selenium<1%
  17. Cadmium<1%
  • pH 7.48 pH
  • Conductivity 461 µS/cm
  • Phosphate 0.078 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
pH7.48 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
Conductivity461 µS/cmNo legal limit–
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00041 mg/L0.01 mg/L
4%
Antimony0.000059 mg/L0.005 mg/L
1%
Nitrate29.4 mg/L50 mg/L
59%
Nitrite0.003 mg/L0.5 mg/L
<1%
Selenium0.00024 mg/L0.04 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%
Copper0.0484 mg/L2 mg/L
2%
Fluoride0.04 mg/L1.5 mg/L
3%
Arsenic0.00037 mg/L0.01 mg/L
4%
Trihalomethanes0.0046 mg/L0.1 mg/L
5%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Phosphate0.078 mg/LNo legal limit–
Outside your tap

Your river is the Blithe from Source to Tad Brook, rated moderate

The Environment Agency rated the Blithe from Source to Tad Brook as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. 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

41

forever-chemical detections in nearby rivers and groundwater

At 6 sites. The highest was PFBA at 0.0035 µg/L, at River Blithe - Cresswell, 2.3 km away, in August 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

ST11 in short

Tap water in ST11 (Staffordshire Moorlands) is supplied by Severn Trent in the Staffordshire Moorlands Central zone and scores 9.4 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 22 December 2025.

  • Nitrate is the reading closest to its limit, at 59% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 3rd cleanest of 5 areas tested in Staffordshire MoorlandsSquarely mid-table for Staffordshire Moorlands, between ST9 on 9.5 and ST8 on 9.4.
  • PFAS found at 6 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFBA about 2.3 km away. What was measured

Next door

ST99.5 out of 10ST109.4 out of 10ST89.4 out of 10ST139.4 out of 10

Questions about ST11 water

Is ST11 tap water safe to drink?

Based on the latest tests, ST11 (Staffordshire Moorlands) water scores 9.4/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in ST11 water?

We tested 20 contaminants in ST11 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 ST11?

ST11 (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 ST11?

ST11 water scored 9.4/10 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 ST11 water?

The tap-water tests we hold for ST11 do not include a PFAS result. Environment Agency monitoring found PFAS in 41 river and groundwater samples from 6 sites within 10 km of ST11, the highest being PFBA at 0.0035 µg/L about 2.3 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 ST11?

The Environment Agency rated the Blithe from Source to Tad Brook as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. 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 ST11, 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 ST11

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
pH7.74 pHNone
Temperature14.4 °CNone
Ammonia0.032 mg/L0.5 mg/L
Nitrate4.5 mg/L50 mg/L
Nitrite0.008 mg/L0.5 mg/L
Phosphate0.058 mg/LNone
Dissolved Oxygen9.78 mg/LNone
Conductivity528 µS/cmNone
Copper0.00285 mg/L2 mg/L
Zinc0.0151 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