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tapwater
England and Wales average 9.0

Tap water in DH9, County DurhamSafe to drink.Moderately soft.

Supplied by Northumbrian Water. 4,346 samples, 20 substances, latest on 18 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.5 / 10

The tank is as full as the score. The specks are the minerals that make water hard.

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 DH9 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 41% of it. 17 of 18 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 0.000018 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Copper: 0.008 mg/L, <1% of the 2 mg/L limitCopper<1%Lead: 0.000065 mg/L, <1% of the 0.01 mg/L limitLead<1%Boron: 0.0097 mg/L, <1% of the 1 mg/L limitBoron<1%Nitrite: 0.0061 mg/L, 1% of the 0.5 mg/L limitNitrite1%Arsenic: 0.00013 mg/L, 1% of the 0.01 mg/L limitArsenic1%Chromium: 0.00067 mg/L, 1% of the 0.05 mg/L limitChromium1%Manganese: 0.00095 mg/L, 2% of the 0.05 mg/L limitManganese2%Selenium: 0.00083 mg/L, 2% of the 0.04 mg/L limitSelenium2%Nitrate: 1.5 mg/L, 3% of the 50 mg/L limitNitrate3%Antimony: 0.00016 mg/L, 3% of the 0.005 mg/L limitAntimony3%Turbidity: 0.2 NTU, 5% of the 4 NTU limitTurbidity5%Bromate: 0.0005 mg/L, 5% of the 0.01 mg/L limitBromate5%Nickel: 0.0011 mg/L, 6% of the 0.02 mg/L limitNickel6%Iron: 0.013 mg/L, 7% of the 0.2 mg/L limitIron7%Colour: 1.5 mg/L Pt/Co, 8% of the 20 mg/L Pt/Co limitColour8%Aluminium: 0.031 mg/L, 16% of the 0.2 mg/L limitAluminium16%Fluoride: 0.61 mg/L, 41% of the 1.5 mg/L limitFluoride41%
  1. Fluoride41%
  2. Aluminium16%
  3. Colour8%
  4. Iron7%
  5. Nickel6%
  6. Turbidity5%
  7. Bromate5%
  8. Antimony3%
  9. Nitrate3%
  10. Selenium2%
  11. Manganese2%
  12. Chromium1%
  13. Arsenic1%
  14. Nitrite1%
  15. Boron<1%
  16. Lead<1%
  17. Copper<1%
  18. Cadmium<1%
  • Conductivity 170 µS/cm
  • pH 7.4 pH
All 20 results as a table
SubstanceResultLegal limitShare of limit
Aluminium0.031 mg/L0.2 mg/L
16%
Conductivity170 µS/cmNo legal limit–
Iron0.013 mg/L0.2 mg/L
7%
Colour1.5 mg/L Pt/Co20 mg/L Pt/Co
8%
Turbidity0.2 NTU4 NTU
5%
pH7.4 pHNo legal limit–
Manganese0.00095 mg/L0.05 mg/L
2%
Nitrate1.5 mg/L50 mg/L
3%
Fluoride0.61 mg/L1.5 mg/L
41%
Chromium0.00067 mg/L0.05 mg/L
1%
Boron0.0097 mg/L1 mg/L
<1%
Nitrite0.0061 mg/L0.5 mg/L
1%
Copper0.008 mg/L2 mg/L
<1%
Arsenic0.00013 mg/L0.01 mg/L
1%
Antimony0.00016 mg/L0.005 mg/L
3%
Nickel0.0011 mg/L0.02 mg/L
6%
Selenium0.00083 mg/L0.04 mg/L
2%
Cadmium0.000018 mg/L0.005 mg/L
<1%
Bromate0.0005 mg/L0.01 mg/L
5%
Lead0.000065 mg/L0.01 mg/L
<1%

78mg of limescale minerals in every litre

Soft water. Kind to kettles, boilers and skin

You will not need a softener here, and you will use less soap and detergent than most of England.

Soft400 mg/L
Outside your tap

Your river is the Team from Source to Tyne, rated moderate

The Environment Agency rated the Team from Source to Tyne as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by fish, insects and other small river life 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

Within 10 km

120

forever-chemical detections in nearby rivers and groundwater

At 4 sites. The highest was PFBS at 0.0067 µg/L, at Team at Third Avenue Bridge, 9.8 km away, in July 2026. These are river and borehole samples, not tests of your tap water.

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

DH9 in short

Tap water in DH9 (County Durham) is supplied by Northumbrian Water in the County Durham Central zone and scores 9.5 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 18 December 2025.

  • Fluoride is the reading closest to its limit, at 41% of the 1.5 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 13th cleanest of 22 areas tested in County DurhamSquarely mid-table for County Durham, between DH1 on 9.7 and TS28 on 9.
  • PFAS found at 4 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFBS about 9.8 km away. What was measured

Next door

DH79.4 out of 10 · 85 mg/LDH19.7 out of 10 · 68 mg/LDH39.4 out of 10 · 80 mg/LDL59.7 out of 10 · 115 mg/LDL149.6 out of 10 · 115 mg/LDL169.4 out of 10 · 70 mg/LDH29.4 out of 10 · 80 mg/LDL49.6 out of 10 · 115 mg/LDL179.7 out of 10 · 70 mg/LDL139.7 out of 10 · 85 mg/L

Questions about DH9 water

Is DH9 tap water safe to drink?

Based on the latest tests, DH9 (County Durham) water scores 9.5/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Northumbrian Water.

What contaminants are in DH9 water?

We tested 20 contaminants in DH9 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 DH9?

DH9 (County Durham) is supplied by Northumbrian Water. You can view their full profile and compliance data on our supplier page.

Is DH9 water hard or soft?

Water in DH9 (County Durham) has a hardness of 78 mg/L CaCO3, which is classified as moderately soft. This is a moderate hardness level.

Should I use a water filter in DH9?

DH9 water scored 9.5/10 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 DH9 water?

The tap-water tests we hold for DH9 do not include a PFAS result. Environment Agency monitoring found PFAS in 120 river and groundwater samples from 4 sites within 10 km of DH9, the highest being PFBS at 0.0067 µg/L about 9.8 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 DH9?

The Environment Agency rated the Team from Source to Tyne as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by fish, insects and other small river life 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 DH9, 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 DH9

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
pH8.37 pHNone
Temperature8.8 °CNone
Conductivity751 µS/cmNone
Nitrate0.82 mg/L50 mg/L
Nitrite0.0052 mg/L0.5 mg/L
Phosphate0.017 mg/LNone
Dissolved Oxygen11 mg/LNone
Cadmium0.000023 mg/L0.005 mg/L
Ammonia0.084 mg/L0.5 mg/L

Get alerts for your area

We'll email you when water quality data changes for DH9.

Source: Northumbrian Water 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