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tapwater
England and Wales average 9.0

Tap water in ST15, StaffordSafe to drink.

Supplied by Severn Trent. 660 samples, 20 substances, latest on 21 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

8.8 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of ST15 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 63% of it. 15 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitTrihalomethanes: 0 mg/L, 0% of the 0.1 mg/L limitTrihalomethanes0%Cadmium: 0.00001 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: 0.00029 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: 0.000063 mg/L, 1% of the 0.005 mg/L limitAntimony1%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%Copper: 0.0448 mg/L, 2% of the 2 mg/L limitCopper2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Fluoride: 0.05 mg/L, 3% of the 1.5 mg/L limitFluoride3%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%Arsenic: 0.00617 mg/L, 62% of the 0.01 mg/L limitArsenic62%Nitrate: 31.3 mg/L, 63% of the 50 mg/L limitNitrate63%
  1. Nitrate63%
  2. Arsenic62%
  3. Aluminium11%
  4. Nickel5%
  5. Colour4%
  6. Iron3%
  7. Fluoride3%
  8. Turbidity3%
  9. Copper2%
  10. Manganese1%
  11. Lead1%
  12. Antimony1%
  13. Chromium<1%
  14. Selenium<1%
  15. Nitrite<1%
  16. Cadmium<1%
  17. Trihalomethanes0%
  • pH 7.68 pH
  • Conductivity 545 µS/cm
  • Phosphate 0.456 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
Turbidity0.12 NTU4 NTU
3%
pH7.68 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Conductivity545 µS/cmNo legal limit–
Antimony0.000063 mg/L0.005 mg/L
1%
Selenium0.00029 mg/L0.04 mg/L
<1%
Trihalomethanes0 mg/L0.1 mg/L
<1%
Nitrate31.3 mg/L50 mg/L
63%
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%
Copper0.0448 mg/L2 mg/L
2%
Fluoride0.05 mg/L1.5 mg/L
3%
Arsenic0.00617 mg/L0.01 mg/L
62%
Cadmium0.00001 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00014 mg/L0.01 mg/L
1%
Phosphate0.456 mg/LNo legal limit–
Outside your tap

Your river is the Trent from Tittensor to River Sow, rated poor

The Environment Agency rated the Trent from Tittensor to River Sow 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, phosphate and insects and other small river life. 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 6:2 FTSA at 0.0063 µg/L, at The Toft Farm Groundwater F43/02, Stoke on Trent, Staffs, 7.8 km away, in May 2026. 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

ST15 in short

Tap water in ST15 (Stafford) is supplied by Severn Trent in the Stafford Central zone and scores 8.8 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 21 December 2025.

  • Nitrate is the reading closest to its limit, at 63% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 5th cleanest of 7 areas tested in Stafford2 areas in Stafford scored lower. The best is ST12 on 9.
  • PFAS found at 6 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was 6:2 FTSA about 7.8 km away. What was measured

Next door

ST218.3 out of 10ST208.3 out of 10ST129.0 out of 10ST168.9 out of 10ST179.0 out of 10ST189.0 out of 10

Questions about ST15 water

Is ST15 tap water safe to drink?

Based on the latest tests, ST15 (Stafford) water scores 8.8/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in ST15 water?

We tested 20 contaminants in ST15 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 ST15?

ST15 (Stafford) 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 ST15?

ST15 water scored 8.8/10 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 ST15 water?

The tap-water tests we hold for ST15 do not include a PFAS result. Environment Agency monitoring found PFAS in 41 river and groundwater samples from 6 sites within 10 km of ST15, the highest being 6:2 FTSA at 0.0063 µg/L about 7.8 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 ST15?

The Environment Agency rated the Trent from Tittensor to River Sow 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, phosphate and insects and other small river life. 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 ST15, 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 ST15

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
pH8.23 pHNone
Temperature13.6 °CNone
Conductivity520 µS/cmNone
Nitrate6.8 mg/L50 mg/L
Nitrite0.0077 mg/L0.5 mg/L
Phosphate0.19 mg/LNone
Dissolved Oxygen10.2 mg/LNone
Iron0.054 mg/L0.2 mg/L
Ammonia0.035 mg/L0.5 mg/L

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We'll email you when water quality data changes for ST15.

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