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tapwater
England and Wales average 9.0

Tap water in TF1, Telford and WrekinSafe to drink.

Supplied by Severn Trent. 1,716 samples, 22 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

9.3 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of TF1 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 42% of it. 17 of 19 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 0.00001 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Copper: 0.0108 mg/L, <1% of the 2 mg/L limitCopper<1%Selenium: 0.00022 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%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%Mercury: 0.000022 mg/L, 2% of the 0.001 mg/L limitMercury2%Trihalomethanes: 0.0025 mg/L, 3% of the 0.1 mg/L limitTrihalomethanes3%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Boron: 0.03 mg/L, 3% of the 1 mg/L limitBoron3%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%Fluoride: 0.08 mg/L, 5% of the 1.5 mg/L limitFluoride5%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Arsenic: 0.00268 mg/L, 27% of the 0.01 mg/L limitArsenic27%Nitrate: 20.8 mg/L, 42% of the 50 mg/L limitNitrate42%
  1. Nitrate42%
  2. Arsenic27%
  3. Aluminium11%
  4. Fluoride5%
  5. Nickel5%
  6. Colour4%
  7. Iron3%
  8. Turbidity3%
  9. Boron3%
  10. Nitrite3%
  11. Trihalomethanes3%
  12. Mercury2%
  13. Manganese1%
  14. Lead1%
  15. Antimony1%
  16. Chromium<1%
  17. Selenium<1%
  18. Copper<1%
  19. Cadmium<1%
  • pH 7.4 pH
  • Conductivity 601 µS/cm
  • Phosphate 1 mg/L
All 22 results as a table
SubstanceResultLegal limitShare of limit
Turbidity0.12 NTU4 NTU
3%
pH7.4 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Conductivity601 µS/cmNo legal limit–
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.007 mg/L0.2 mg/L
3%
Manganese0.00073 mg/L0.05 mg/L
1%
Copper0.0108 mg/L2 mg/L
<1%
Fluoride0.08 mg/L1.5 mg/L
5%
Arsenic0.00268 mg/L0.01 mg/L
27%
Cadmium0.00001 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Mercury0.000022 mg/L0.001 mg/L
2%
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.000059 mg/L0.005 mg/L
1%
Selenium0.00022 mg/L0.04 mg/L
<1%
Nitrate20.8 mg/L50 mg/L
42%
Nitrite0.013 mg/L0.5 mg/L
3%
Boron0.03 mg/L1 mg/L
3%
Trihalomethanes0.0025 mg/L0.1 mg/L
3%
Phosphate1 mg/LNo legal limit–
Outside your tap

Your river is the Ketley Brook source to Ketley Flood Meadow, rated poor

The Environment Agency rated the Ketley Brook source to Ketley Flood Meadow 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 insects and other small river life, 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

TF1 in short

Tap water in TF1 (Telford and Wrekin) is supplied by Severn Trent in the Telford and Wrekin Central zone and scores 9.3 out of 10, against an England and Wales average of 9.0. None of the 22 tested substances came close to a limit. The latest sample is from 22 December 2025.

  • 2nd cleanest of 9 areas tested in Telford and WrekinOnly 1 area in Telford and Wrekin scored higher. The best is TF6 on 9.7.
  • Nitrate is the reading closest to its limit, at 42% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • Scores higher than 5 of 8 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

TF39.1 out of 10TF69.7 out of 10TF79.0 out of 10TF89.1 out of 10TF108.4 out of 10TF29.2 out of 10TF49.3 out of 10TF59.3 out of 10

Questions about TF1 water

Is TF1 tap water safe to drink?

Based on the latest tests, TF1 (Telford and Wrekin) water scores 9.3/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in TF1 water?

We tested 22 contaminants in TF1 water. None exceeded recommended safe levels.

Who supplies water in TF1?

TF1 (Telford and Wrekin) 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 TF1?

TF1 water scored 9.3/10 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 TF1 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for TF1, and the Environment Agency has no PFAS detections in rivers or groundwater within 10 km of it. That reflects where sampling has happened as much as the water itself.

How clean is the river near TF1?

The Environment Agency rated the Ketley Brook source to Ketley Flood Meadow 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 insects and other small river life, 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 TF1, which is treated before it reaches homes.

Keep reading

How to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near TF1

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
Turbidity38.5 NTU4 NTU
pH7.97 pHNone
Temperature7.9 °CNone
Conductivity699 µS/cmNone
Ammonia0.304 mg/L0.5 mg/L
Nitrate8.22 mg/L50 mg/L
Phosphate0.053 mg/LNone
Lead0.00085 mg/L0.01 mg/L
Cadmium0.000816 mg/L0.005 mg/L
Hardness (as CaCO3)387 mg/LNone
Chromium0.000952 mg/L0.05 mg/L
Copper0.00937 mg/L2 mg/L
Zinc0.0295 mg/LNone
Nickel0.0067 mg/L0.02 mg/L

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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