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tapwater
England and Wales average 9.0

Tap water in DE24, DerbySafe to drink.

Supplied by Severn Trent. 1,171 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

9.3 / 10

The tank is as full as the score.

What to do about it

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Households concerned about PFAS and heavy metals

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High-volume under-sink filtration without RO complexity

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Basic chlorine and taste improvement on a budget

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What's in a glass of DE24 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.

Trihalomethanes came closest to a limit, at 34% of it. 16 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitNitrite: 0.003 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Selenium: 0.00048 mg/L, 1% of the 0.04 mg/L limitSelenium1%Lead: 0.00014 mg/L, 1% of the 0.01 mg/L limitLead1%Arsenic: 0.00014 mg/L, 1% of the 0.01 mg/L limitArsenic1%Copper: 0.0311 mg/L, 2% of the 2 mg/L limitCopper2%Manganese: 0.00086 mg/L, 2% of the 0.05 mg/L limitManganese2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Cadmium: 0.00018 mg/L, 4% of the 0.005 mg/L limitCadmium4%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Antimony: 0.000205 mg/L, 4% of the 0.005 mg/L limitAntimony4%Iron: 0.0127 mg/L, 6% of the 0.2 mg/L limitIron6%Nickel: 0.0021 mg/L, 11% of the 0.02 mg/L limitNickel11%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 9.2 mg/L, 18% of the 50 mg/L limitNitrate18%Fluoride: 0.29 mg/L, 19% of the 1.5 mg/L limitFluoride19%Trihalomethanes: 0.0344 mg/L, 34% of the 0.1 mg/L limitTrihalomethanes34%
  1. Trihalomethanes34%
  2. Fluoride19%
  3. Nitrate18%
  4. Nickel11%
  5. Aluminium11%
  6. Iron6%
  7. Antimony4%
  8. Colour4%
  9. Cadmium4%
  10. Turbidity3%
  11. Manganese2%
  12. Copper2%
  13. Lead1%
  14. Arsenic1%
  15. Selenium1%
  16. Chromium<1%
  17. Nitrite<1%
  • pH 7.46 pH
  • Conductivity 315 µS/cm
  • Phosphate 1.04 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
pH7.46 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
Conductivity315 µS/cmNo legal limit–
Manganese0.00086 mg/L0.05 mg/L
2%
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.0127 mg/L0.2 mg/L
6%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.000205 mg/L0.005 mg/L
4%
Selenium0.00048 mg/L0.04 mg/L
1%
Nitrate9.2 mg/L50 mg/L
18%
Nitrite0.003 mg/L0.5 mg/L
<1%
Copper0.0311 mg/L2 mg/L
2%
Fluoride0.29 mg/L1.5 mg/L
19%
Arsenic0.00014 mg/L0.01 mg/L
1%
Cadmium0.00018 mg/L0.005 mg/L
4%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.0021 mg/L0.02 mg/L
11%
Trihalomethanes0.0344 mg/L0.1 mg/L
34%
Phosphate1.04 mg/LNo legal limit–
Outside your tap

Your river is the Derwent from Bottle Brook to Trent, rated moderate

The Environment Agency rated the Derwent from Bottle Brook to Trent 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, phosphate and specific pollutants. 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

196

forever-chemical detections in nearby rivers and groundwater

At 14 sites. The highest was 6:2 FTSA at 0.35 µg/L, at Non-Tidal River Trent at Willington, 8.6 km away, in July 2025. These are river and borehole samples, not tests of your tap water.

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

DE24 in short

Tap water in DE24 (Derby) is supplied by Severn Trent in the Derby Central zone and scores 9.3 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.

  • 3rd cleanest of 6 areas tested in DerbySquarely mid-table for Derby, between DE1 on 9.3 and DE3 on 8.6. Every area in Derby
  • PFAS found at 14 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was 6:2 FTSA about 8.6 km away. What was measured
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 34% of the 0.1 mg/L maximum. See every reading

Next door

DE219.2 out of 10DE229.3 out of 10DE19.3 out of 10DE239.2 out of 10DE38.6 out of 10DE739.2 out of 10

Questions about DE24 water

Is DE24 tap water safe to drink?

Based on the latest tests, DE24 (Derby) water scores 9.3/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in DE24 water?

We tested 20 contaminants in DE24 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 DE24?

DE24 (Derby) 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 DE24?

DE24 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 DE24 water?

The tap-water tests we hold for DE24 do not include a PFAS result. Environment Agency monitoring found PFAS in 196 river and groundwater samples from 14 sites within 10 km of DE24, the highest being 6:2 FTSA at 0.35 µg/L about 8.6 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 DE24?

The Environment Agency rated the Derwent from Bottle Brook to Trent 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, phosphate and specific pollutants. 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 DE24, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsAll of DerbyUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near DE24

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
Manganese0.066 mg/L0.05 mg/L
Lead0.0055 mg/L0.01 mg/L
pH7.9 pHNone
Temperature16.2 °CNone
Conductivity672 µS/cmNone
Cadmium0.00016 mg/L0.005 mg/L
Hardness (as CaCO3)234 mg/LNone
Zinc0.028 mg/LNone
Nickel0.0022 mg/L0.02 mg/L
Copper0.0012 mg/L2 mg/L
Iron0.051 mg/L0.2 mg/L
Ammonia0.28 mg/L0.5 mg/L

Get alerts for your area

We'll email you when water quality data changes for DE24.

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