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tapwater
England and Wales average 9.0

Tap water in CW10, Cheshire EastSafe to drink.Moderately soft.

Supplied by United Utilities. 1,202 samples, 16 substances, latest on 17 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.4 / 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 CW10 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 35% of it. 15 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.0000435 mg/L, <1% of the 2 mg/L limitCopper<1%Chromium: 0.00083 mg/L, 2% of the 0.05 mg/L limitChromium2%Cadmium: 0.00009 mg/L, 2% of the 0.005 mg/L limitCadmium2%Nitrite: 0.0098 mg/L, 2% of the 0.5 mg/L limitNitrite2%Selenium: 0.00085 mg/L, 2% of the 0.04 mg/L limitSelenium2%Manganese: 0.00146 mg/L, 3% of the 0.05 mg/L limitManganese3%Aluminium: 0.00622 mg/L, 3% of the 0.2 mg/L limitAluminium3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%Nickel: 0.00077 mg/L, 4% of the 0.02 mg/L limitNickel4%Bromate: 0.00049 mg/L, 5% of the 0.01 mg/L limitBromate5%Turbidity: 0.2 NTU, 5% of the 4 NTU limitTurbidity5%Lead: 0.00055 mg/L, 6% of the 0.01 mg/L limitLead6%Antimony: 0.00031 mg/L, 6% of the 0.005 mg/L limitAntimony6%Nitrate: 4.38 mg/L, 9% of the 50 mg/L limitNitrate9%Ammonia: 0.054 mg/L, 11% of the 0.5 mg/L limitAmmonia11%Trihalomethanes: 0.035 mg/L, 35% of the 0.1 mg/L limitTrihalomethanes35%
  1. Trihalomethanes35%
  2. Ammonia11%
  3. Nitrate9%
  4. Antimony6%
  5. Lead6%
  6. Turbidity5%
  7. Bromate5%
  8. Nickel4%
  9. Iron3%
  10. Aluminium3%
  11. Manganese3%
  12. Selenium2%
  13. Nitrite2%
  14. Cadmium2%
  15. Chromium2%
  16. Copper<1%
All 16 results as a table
SubstanceResultLegal limitShare of limit
Nitrate4.38 mg/L50 mg/L
9%
Nitrite0.0098 mg/L0.5 mg/L
2%
Ammonia0.054 mg/L0.5 mg/L
11%
Turbidity0.2 NTU4 NTU
5%
Aluminium0.00622 mg/L0.2 mg/L
3%
Iron0.007 mg/L0.2 mg/L
3%
Manganese0.00146 mg/L0.05 mg/L
3%
Cadmium0.00009 mg/L0.005 mg/L
2%
Chromium0.00083 mg/L0.05 mg/L
2%
Antimony0.00031 mg/L0.005 mg/L
6%
Selenium0.00085 mg/L0.04 mg/L
2%
Trihalomethanes0.035 mg/L0.1 mg/L
35%
Bromate0.00049 mg/L0.01 mg/L
5%
Copper0.0000435 mg/L2 mg/L
<1%
Nickel0.00077 mg/L0.02 mg/L
4%
Lead0.00055 mg/L0.01 mg/L
6%

113mg 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 Croco, rated bad

The Environment Agency rated the Croco as bad for ecological health in its 2025 assessment, meaning the river is severely damaged, with most of the expected wildlife missing. It is held back by water plants and algae, 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

CW10 in short

Tap water in CW10 (Cheshire East) is supplied by United Utilities in the Cheshire East Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 16 tested substances came close to a limit. The latest sample is from 17 December 2024.

  • The cleanest tap water of the 13 areas tested in Cheshire EastCW10 scores 9.4 out of 10, ahead of CW4 in second place on 9.4.
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 35% of the 0.1 mg/L maximum. See every reading
  • Moderately soft water at 113 mg/LLittle limescale to speak of in CW10. A softener would be money wasted. How hardness is measured

Next door

CW18.8 out of 10 · 65 mg/LCW49.4 out of 10 · 17 mg/LCW38.9 out of 10 · 109 mg/LCW29.0 out of 10 · 73 mg/LCW59.0 out of 10 · 73 mg/LCW119.3 out of 10 · 17 mg/LWA169.4 out of 10 · 77 mg/LSK109.4 out of 10 · 59 mg/LSK99.4 out of 10 · 138 mg/LSK119.3 out of 10 · 64 mg/L

Questions about CW10 water

Is CW10 tap water safe to drink?

Based on the latest tests, CW10 (Cheshire East) water scores 9.4/10, which is safe. 0 of 16 tested contaminants exceeded recommended levels. Water is supplied by United Utilities.

What contaminants are in CW10 water?

We tested 16 contaminants in CW10 water. None exceeded recommended safe levels.

Who supplies water in CW10?

CW10 (Cheshire East) is supplied by United Utilities. You can view their full profile and compliance data on our supplier page.

Is CW10 water hard or soft?

Water in CW10 (Cheshire East) has a hardness of 113 mg/L CaCO3, which is classified as moderately soft. This is a moderate hardness level.

Should I use a water filter in CW10?

CW10 water scored 9.4/10 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 CW10 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for CW10, 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 CW10?

The Environment Agency rated the Croco as bad for ecological health in its 2025 assessment, meaning the river is severely damaged, with most of the expected wildlife missing. It is held back by water plants and algae, 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 CW10, 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 CW10

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
pH7.67 pHNone
Nickel0.0061 mg/L0.02 mg/L
Arsenic0.005 mg/L0.01 mg/L
Copper0.00075 mg/L2 mg/L
Iron0.06 mg/L0.2 mg/L
Temperature9.1 °CNone
Conductivity517 µS/cmNone
Nitrate4.2 mg/L50 mg/L
Nitrite0.018 mg/L0.5 mg/L
Phosphate0.041 mg/LNone
Dissolved Oxygen11.3 mg/LNone
Ammonia0.1 mg/L0.5 mg/L

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Source: United Utilities 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