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tapwater
England and Wales average 9.0

Tap water in CW1, Cheshire EastSafe to drink.Moderately soft.

Supplied by United Utilities. 2,277 samples, 17 substances, latest on 24 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

8.8 / 10

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

What to do about it

ZeroWater 12-Cup Ready-Pour

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£40typical price

Households concerned about PFAS and heavy metals

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Waterdrop 10UA Under Sink

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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 CW1 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 72% of it. 15 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.0000104 mg/L, <1% of the 2 mg/L limitCopper<1%Nitrite: 0.0075 mg/L, 2% of the 0.5 mg/L limitNitrite2%Manganese: 0.00078 mg/L, 2% of the 0.05 mg/L limitManganese2%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%Selenium: 0.00085 mg/L, 2% of the 0.04 mg/L limitSelenium2%Aluminium: 0.00538 mg/L, 3% of the 0.2 mg/L limitAluminium3%Iron: 0.0074 mg/L, 4% of the 0.2 mg/L limitIron4%Turbidity: 0.16 NTU, 4% of the 4 NTU limitTurbidity4%Nickel: 0.00103 mg/L, 5% of the 0.02 mg/L limitNickel5%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%Ammonia: 0.0321 mg/L, 6% of the 0.5 mg/L limitAmmonia6%Bromate: 0.0007 mg/L, 7% of the 0.01 mg/L limitBromate7%Nitrate: 5.85 mg/L, 12% of the 50 mg/L limitNitrate12%Fluoride: 0.88 mg/L, 59% of the 1.5 mg/L limitFluoride59%Trihalomethanes: 0.0725 mg/L, 72% of the 0.1 mg/L limitTrihalomethanes72%
  1. Trihalomethanes72%
  2. Fluoride59%
  3. Nitrate12%
  4. Bromate7%
  5. Ammonia6%
  6. Antimony6%
  7. Lead6%
  8. Nickel5%
  9. Turbidity4%
  10. Iron4%
  11. Aluminium3%
  12. Selenium2%
  13. Cadmium2%
  14. Chromium2%
  15. Manganese2%
  16. Nitrite2%
  17. Copper<1%
All 17 results as a table
SubstanceResultLegal limitShare of limit
Turbidity0.16 NTU4 NTU
4%
Aluminium0.00538 mg/L0.2 mg/L
3%
Iron0.0074 mg/L0.2 mg/L
4%
Manganese0.00078 mg/L0.05 mg/L
2%
Copper0.0000104 mg/L2 mg/L
<1%
Nickel0.00103 mg/L0.02 mg/L
5%
Lead0.00055 mg/L0.01 mg/L
6%
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%
Fluoride0.88 mg/L1.5 mg/L
59%
Bromate0.0007 mg/L0.01 mg/L
7%
Nitrate5.85 mg/L50 mg/L
12%
Nitrite0.0075 mg/L0.5 mg/L
2%
Ammonia0.0321 mg/L0.5 mg/L
6%
Trihalomethanes0.0725 mg/L0.1 mg/L
72%

65mg 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 Weaver (Valley Brook to Winsford Flashes), rated poor

The Environment Agency rated the Weaver (Valley Brook to Winsford Flashes) 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 water plants and algae, phosphate 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

CW1 in short

Tap water in CW1 (Cheshire East) is supplied by United Utilities in the Cheshire East Central zone and scores 8.8 out of 10, against an England and Wales average of 9.0. None of the 17 tested substances came close to a limit. The latest sample is from 24 December 2024.

  • The lowest score of the 13 areas tested in Cheshire EastCW1 scores 8.8 out of 10. The best in Cheshire East, CW10, scores 9.4.
  • Every one of the 10 neighbouring districts scores higherCW4 next door scores 9.4, against 8.8 here. Supply zones, not distance, explain the gap. See CW4
  • Trihalomethanes is the reading closest to its limit, at 72% of the 0.1 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading

Next door

CW59.0 out of 10 · 73 mg/LCW29.0 out of 10 · 73 mg/LCW49.4 out of 10 · 17 mg/LCW38.9 out of 10 · 109 mg/LCW109.4 out of 10 · 113 mg/LCW119.3 out of 10 · 17 mg/LWA169.4 out of 10 · 77 mg/LSK99.4 out of 10 · 138 mg/LSK109.4 out of 10 · 59 mg/LSK119.3 out of 10 · 64 mg/L

Questions about CW1 water

Is CW1 tap water safe to drink?

Based on the latest tests, CW1 (Cheshire East) water scores 8.8/10, which is safe. 0 of 17 tested contaminants exceeded recommended levels. Water is supplied by United Utilities.

What contaminants are in CW1 water?

We tested 17 contaminants in CW1 water. None exceeded recommended safe levels.

Who supplies water in CW1?

CW1 (Cheshire East) is supplied by United Utilities. You can view their full profile and compliance data on our supplier page.

Is CW1 water hard or soft?

Water in CW1 (Cheshire East) has a hardness of 65 mg/L CaCO3, which is classified as moderately soft. This is a moderate hardness level.

Should I use a water filter in CW1?

CW1 water scored 8.8/10 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 CW1 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for CW1, 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 CW1?

The Environment Agency rated the Weaver (Valley Brook to Winsford Flashes) 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 water plants and algae, phosphate 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 CW1, 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 CW1

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
pH7.76 pHNone
Temperature7.5 °CNone
Conductivity553 µS/cmNone
Ammonia0.13 mg/L0.5 mg/L
Nitrate4 mg/L50 mg/L
Nitrite0.045 mg/L0.5 mg/L
Phosphate0.086 mg/LNone
Dissolved Oxygen10.5 mg/LNone

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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