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tapwater
England and Wales average 9.0

Tap water in DY7, South StaffordshireSafe to drink.

Supplied by Severn Trent. 421 samples, 20 substances, latest on 13 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

8.6 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of DY7 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 73% of it. 14 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%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Selenium: 0.00041 mg/L, 1% of the 0.04 mg/L limitSelenium1%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%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Lead: 0.00029 mg/L, 3% of the 0.01 mg/L limitLead3%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%Copper: 0.0915 mg/L, 5% of the 2 mg/L limitCopper5%Nickel: 0.001 mg/L, 5% of the 0.02 mg/L limitNickel5%Trihalomethanes: 0.0052 mg/L, 5% of the 0.1 mg/L limitTrihalomethanes5%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Arsenic: 0.00351 mg/L, 35% of the 0.01 mg/L limitArsenic35%Fluoride: 0.93 mg/L, 62% of the 1.5 mg/L limitFluoride62%Nitrate: 36.5 mg/L, 73% of the 50 mg/L limitNitrate73%
  1. Nitrate73%
  2. Fluoride62%
  3. Arsenic35%
  4. Aluminium11%
  5. Trihalomethanes5%
  6. Nickel5%
  7. Copper5%
  8. Colour4%
  9. Iron3%
  10. Turbidity3%
  11. Lead3%
  12. Nitrite3%
  13. Manganese1%
  14. Antimony1%
  15. Selenium1%
  16. Chromium<1%
  17. Cadmium<1%
  • pH 7.91 pH
  • Conductivity 364 µS/cm
  • Phosphate 0.332 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
pH7.91 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Conductivity364 µS/cmNo legal limit–
Turbidity0.12 NTU4 NTU
3%
Manganese0.00073 mg/L0.05 mg/L
1%
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.007 mg/L0.2 mg/L
3%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.001 mg/L0.02 mg/L
5%
Trihalomethanes0.0052 mg/L0.1 mg/L
5%
Lead0.00029 mg/L0.01 mg/L
3%
Antimony0.000059 mg/L0.005 mg/L
1%
Selenium0.00041 mg/L0.04 mg/L
1%
Nitrate36.5 mg/L50 mg/L
73%
Nitrite0.013 mg/L0.5 mg/L
3%
Copper0.0915 mg/L2 mg/L
5%
Fluoride0.93 mg/L1.5 mg/L
62%
Arsenic0.00351 mg/L0.01 mg/L
35%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Phosphate0.332 mg/LNo legal limit–
Outside your tap

Your river is the Stour (Worcs) - conf Smestow Bk to conf R Severn, rated moderate

The Environment Agency rated the Stour (Worcs) - conf Smestow Bk to conf R Severn 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

21

forever-chemical detections in nearby rivers and groundwater

At 4 sites. The highest was 6:2 FTSA at 0.0085 µg/L, at Farmcote Hall F77/10 nr Claverey, 9.2 km away, in February 2026. These are river and borehole samples, not tests of your tap water.

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

DY7 in short

Tap water in DY7 (South Staffordshire) is supplied by Severn Trent in the South Staffordshire Central zone and scores 8.6 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 13 December 2025.

  • Nitrate is the reading closest to its limit, at 73% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 2nd cleanest of 6 areas tested in WolverhamptonOnly 1 area in Wolverhampton scored higher. The best is WS6 on 9.6. Every area in Wolverhampton
  • PFAS found at 4 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was 6:2 FTSA about 9.2 km away. What was measured

Next door

WV88.5 out of 10WV98.6 out of 10WS69.6 out of 10ST198.6 out of 10WV58.6 out of 10

Questions about DY7 water

Is DY7 tap water safe to drink?

Based on the latest tests, DY7 (South Staffordshire) water scores 8.6/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in DY7 water?

We tested 20 contaminants in DY7 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 DY7?

DY7 (South Staffordshire) 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 DY7?

DY7 water scored 8.6/10 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 DY7 water?

The tap-water tests we hold for DY7 do not include a PFAS result. Environment Agency monitoring found PFAS in 21 river and groundwater samples from 4 sites within 10 km of DY7, the highest being 6:2 FTSA at 0.0085 µg/L about 9.2 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 DY7?

The Environment Agency rated the Stour (Worcs) - conf Smestow Bk to conf R Severn 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 DY7, 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 DY7

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
Lead0.00039 mg/L0.01 mg/L
pH7.68 pHNone
Cadmium0.00004 mg/L0.005 mg/L
Nickel0.0039 mg/L0.02 mg/L
Chromium0.00026 mg/L0.05 mg/L
Temperature17 °CNone
Nitrate8.32 mg/L50 mg/L
Nitrite0.037 mg/L0.5 mg/L
Hardness (as CaCO3)321 mg/LNone
Phosphate0.341 mg/LNone
Zinc0.0154 mg/LNone
Copper0.00371 mg/L2 mg/L
Dissolved Oxygen10.8 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