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tapwater
England and Wales average 9.0

Tap water in DY1, DudleySafe to drink.

Supplied by Severn Trent. 13,014 samples, 21 substances, latest on 30 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

8.9 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of DY1 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.

Fluoride came closest to a limit, at 65% of it. 17 of 19 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitNitrite: 0.004 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Chromium: 0.001 mg/L, 2% of the 0.05 mg/L limitChromium2%Selenium: 0.0008 mg/L, 2% of the 0.04 mg/L limitSelenium2%Cadmium: 0.00012 mg/L, 2% of the 0.005 mg/L limitCadmium2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Aluminium: 0.0061 mg/L, 3% of the 0.2 mg/L limitAluminium3%Manganese: 0.0017 mg/L, 3% of the 0.05 mg/L limitManganese3%Iron: 0.0073 mg/L, 4% of the 0.2 mg/L limitIron4%Antimony: 0.0002 mg/L, 4% of the 0.005 mg/L limitAntimony4%Boron: 0.04 mg/L, 4% of the 1 mg/L limitBoron4%Copper: 0.085 mg/L, 4% of the 2 mg/L limitCopper4%Nickel: 0.0011 mg/L, 6% of the 0.02 mg/L limitNickel6%Bromate: 0.0008 mg/L, 8% of the 0.01 mg/L limitBromate8%Lead: 0.0009 mg/L, 9% of the 0.01 mg/L limitLead9%Colour: 2 mg/L Pt/Co, 10% of the 20 mg/L Pt/Co limitColour10%Arsenic: 0.001 mg/L, 10% of the 0.01 mg/L limitArsenic10%Trihalomethanes: 0.0212 mg/L, 21% of the 0.1 mg/L limitTrihalomethanes21%Nitrate: 18.6 mg/L, 37% of the 50 mg/L limitNitrate37%Fluoride: 0.98 mg/L, 65% of the 1.5 mg/L limitFluoride65%
  1. Fluoride65%
  2. Nitrate37%
  3. Trihalomethanes21%
  4. Colour10%
  5. Arsenic10%
  6. Lead9%
  7. Bromate8%
  8. Nickel6%
  9. Copper4%
  10. Antimony4%
  11. Boron4%
  12. Iron4%
  13. Manganese3%
  14. Aluminium3%
  15. Turbidity3%
  16. Cadmium2%
  17. Chromium2%
  18. Selenium2%
  19. Nitrite<1%
  • Coliform Bacteria none found
  • Conductivity 404 µS/cm
All 21 results as a table
SubstanceResultLegal limitShare of limit
Coliform Bacteria0 count/100mlMust be zeroNone found
Colour2 mg/L Pt/Co20 mg/L Pt/Co
10%
Turbidity0.12 NTU4 NTU
3%
Conductivity404 µS/cmNo legal limit–
Aluminium0.0061 mg/L0.2 mg/L
3%
Iron0.0073 mg/L0.2 mg/L
4%
Manganese0.0017 mg/L0.05 mg/L
3%
Nitrate18.6 mg/L50 mg/L
37%
Nitrite0.004 mg/L0.5 mg/L
<1%
Copper0.085 mg/L2 mg/L
4%
Fluoride0.98 mg/L1.5 mg/L
65%
Arsenic0.001 mg/L0.01 mg/L
10%
Cadmium0.00012 mg/L0.005 mg/L
2%
Chromium0.001 mg/L0.05 mg/L
2%
Nickel0.0011 mg/L0.02 mg/L
6%
Lead0.0009 mg/L0.01 mg/L
9%
Antimony0.0002 mg/L0.005 mg/L
4%
Selenium0.0008 mg/L0.04 mg/L
2%
Boron0.04 mg/L1 mg/L
4%
Bromate0.0008 mg/L0.01 mg/L
8%
Trihalomethanes0.0212 mg/L0.1 mg/L
21%
Outside your tap

Your river is the Tame (Oldbury Arm) - source to conf R Tame (Wton Arm), rated moderate

The Environment Agency rated the Tame (Oldbury Arm) - source to conf R Tame (Wton Arm) 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, fish and ammonia. 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

37

forever-chemical detections in nearby rivers and groundwater

At 6 sites. The highest was PFHxS (linear) at 0.0094 µg/L, at Sandwell Park Golf Club Borehole, West Bromwich, 8.4 km away, in September 2025. These are river and borehole samples, not tests of your tap water.

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

DY1 in short

Tap water in DY1 (Dudley) is supplied by Severn Trent in the Dudley Central zone and scores 8.9 out of 10, against an England and Wales average of 9.0. None of the 21 tested substances came close to a limit. The latest sample is from 30 December 2024.

  • Fluoride is the reading closest to its limit, at 65% of the 1.5 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 2nd cleanest of 9 areas tested in DudleyOnly 1 area in Dudley scored higher. The best is DY8 on 9.2.
  • PFAS found at 6 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFHxS (linear) about 8.4 km away. What was measured

Next door

B638.7 out of 10B628.6 out of 10DY89.2 out of 10DY38.6 out of 10DY58.9 out of 10DY98.8 out of 10DY68.7 out of 10DY28.8 out of 10B649.0 out of 10WV149.0 out of 10

Questions about DY1 water

Is DY1 tap water safe to drink?

Based on the latest tests, DY1 (Dudley) water scores 8.9/10, which is safe. 0 of 21 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in DY1 water?

We tested 21 contaminants in DY1 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 DY1?

DY1 (Dudley) 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 DY1?

DY1 water scored 8.9/10 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 DY1 water?

The tap-water tests we hold for DY1 do not include a PFAS result. Environment Agency monitoring found PFAS in 37 river and groundwater samples from 6 sites within 10 km of DY1, the highest being PFHxS (linear) at 0.0094 µg/L about 8.4 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 DY1?

The Environment Agency rated the Tame (Oldbury Arm) - source to conf R Tame (Wton Arm) 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, fish and ammonia. 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 DY1, 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 DY1

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
Ammonia3.15 mg/L0.5 mg/L
Iron0.226 mg/L0.2 mg/L
pH7.8 pHNone
Temperature7.6 °CNone
Conductivity1032 µS/cmNone
Nitrate29.2 mg/L50 mg/L
Nitrite0.325 mg/L0.5 mg/L
Phosphate0.584 mg/LNone
Dissolved Oxygen11.5 mg/LNone
Copper0.00593 mg/L2 mg/L
Hardness (as CaCO3)343 mg/LNone
Zinc0.0318 mg/LNone
Chromium0.0021 mg/L0.05 mg/L
PFAS (total)0.00871 µg/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