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tapwater
England and Wales average 9.0

Tap water in PR6, ChorleySafe to drink.Slightly hard.

Supplied by United Utilities. 1,919 samples, 16 substances, latest on 28 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 PR6 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 26% of it. 15 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.0000243 mg/L, <1% of the 2 mg/L limitCopper<1%Manganese: 0.00045 mg/L, <1% of the 0.05 mg/L limitManganese<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%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%Turbidity: 0.16 NTU, 4% of the 4 NTU limitTurbidity4%Lead: 0.00055 mg/L, 6% of the 0.01 mg/L limitLead6%Nitrate: 2.83 mg/L, 6% of the 50 mg/L limitNitrate6%Antimony: 0.00031 mg/L, 6% of the 0.005 mg/L limitAntimony6%Bromate: 0.00073 mg/L, 7% of the 0.01 mg/L limitBromate7%Ammonia: 0.054 mg/L, 11% of the 0.5 mg/L limitAmmonia11%Trihalomethanes: 0.0264 mg/L, 26% of the 0.1 mg/L limitTrihalomethanes26%
  1. Trihalomethanes26%
  2. Ammonia11%
  3. Bromate7%
  4. Antimony6%
  5. Nitrate6%
  6. Lead6%
  7. Turbidity4%
  8. Nickel4%
  9. Iron3%
  10. Aluminium3%
  11. Selenium2%
  12. Nitrite2%
  13. Cadmium2%
  14. Chromium2%
  15. Manganese<1%
  16. Copper<1%
All 16 results as a table
SubstanceResultLegal limitShare of limit
Trihalomethanes0.0264 mg/L0.1 mg/L
26%
Bromate0.00073 mg/L0.01 mg/L
7%
Turbidity0.16 NTU4 NTU
4%
Copper0.0000243 mg/L2 mg/L
<1%
Nickel0.00077 mg/L0.02 mg/L
4%
Lead0.00055 mg/L0.01 mg/L
6%
Nitrate2.83 mg/L50 mg/L
6%
Nitrite0.0098 mg/L0.5 mg/L
2%
Ammonia0.054 mg/L0.5 mg/L
11%
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%
Aluminium0.00622 mg/L0.2 mg/L
3%
Iron0.007 mg/L0.2 mg/L
3%
Manganese0.00045 mg/L0.05 mg/L
<1%

137mg of limescale minerals in every litre

Middling hardness. Some scale, slowly

Below the point where a softener pays for itself. Descaling the kettle now and then is all most homes need.

Soft400 mg/L
Outside your tap

Your river is the Yarrow US Big Lodge Water, rated moderate

The Environment Agency rated the Yarrow US Big Lodge Water as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by 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

97

forever-chemical detections in nearby rivers and groundwater

At 11 sites. The highest was PFOA at 0.088 µg/L, at River Darwen at Blue Bridge / Samples Prior to Sept 1977 Taken at Sd 550282 - D/S of Hennel Brook/Spt Moved Again From SD55165 28000 Wef 7.12.07, 9.1 km away, in May 2024. These are river and borehole samples, not tests of your tap water.

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

PR6 in short

Tap water in PR6 (Chorley) is supplied by United Utilities in the Chorley 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 28 December 2024.

  • PFAS found at 11 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFOA about 9.1 km away. What was measured
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 26% of the 0.1 mg/L maximum. See every reading
  • Moderately hard water at 137 mg/LSome scale over time in PR6, but not enough to justify a softener for most homes. How hardness is measured

Next door

PR79.5 out of 10 · 137 mg/L

Questions about PR6 water

Is PR6 tap water safe to drink?

Based on the latest tests, PR6 (Chorley) 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 PR6 water?

We tested 16 contaminants in PR6 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 PR6?

PR6 (Chorley) is supplied by United Utilities. You can view their full profile and compliance data on our supplier page.

Is PR6 water hard or soft?

Water in PR6 (Chorley) has a hardness of 137 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.

Should I use a water filter in PR6?

PR6 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 PR6 water?

The tap-water tests we hold for PR6 do not include a PFAS result. Environment Agency monitoring found PFAS in 97 river and groundwater samples from 11 sites within 10 km of PR6, the highest being PFOA at 0.088 µg/L about 9.1 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 PR6?

The Environment Agency rated the Yarrow US Big Lodge Water as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by 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 PR6, 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 PR6

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
Aluminium0.425 mg/L0.2 mg/L
pH8.1 pHNone
Temperature9.4 °CNone
Conductivity328 µS/cmNone
Nitrate0.83 mg/L50 mg/L
Nitrite0.0076 mg/L0.5 mg/L
Phosphate0.055 mg/LNone
Dissolved Oxygen11.2 mg/LNone
Ammonia0.28 mg/L0.5 mg/L
Lead0.00482 mg/L0.01 mg/L
Chromium0.00137 mg/L0.05 mg/L
Zinc0.0107 mg/LNone
Copper0.00457 mg/L2 mg/L

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We'll email you when water quality data changes for PR6.

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