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tapwater
England and Wales average 9.0

Tap water in SK17, High PeakSafe to drink.Soft.

Supplied by Severn Trent. 1,166 samples, 20 substances, latest on 23 December 2025. 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

ZeroWater 12-Cup Ready-Pour

ZeroWater 12-Cup Ready-Pour

£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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BRITA Marella XL + MAXTRA PRO

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£25typical price

Basic chlorine and taste improvement on a budget

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What's in a glass of SK17 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 45% of it. 16 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.0032 mg/L, <1% of the 2 mg/L limitCopper<1%Selenium: 0.00009 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Nitrite: 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%Cadmium: 0.00006 mg/L, 1% of the 0.005 mg/L limitCadmium1%Antimony: 0.000062 mg/L, 1% of the 0.005 mg/L limitAntimony1%Arsenic: 0.00014 mg/L, 1% of the 0.01 mg/L limitArsenic1%Manganese: 0.00077 mg/L, 2% of the 0.05 mg/L limitManganese2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Fluoride: 0.05 mg/L, 3% of the 1.5 mg/L limitFluoride3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Nickel: 0.0017 mg/L, 9% of the 0.02 mg/L limitNickel9%Lead: 0.00089 mg/L, 9% of the 0.01 mg/L limitLead9%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 5.8 mg/L, 12% of the 50 mg/L limitNitrate12%Trihalomethanes: 0.0451 mg/L, 45% of the 0.1 mg/L limitTrihalomethanes45%
  1. Trihalomethanes45%
  2. Nitrate12%
  3. Aluminium11%
  4. Lead9%
  5. Nickel9%
  6. Colour4%
  7. Iron3%
  8. Fluoride3%
  9. Turbidity3%
  10. Manganese2%
  11. Arsenic1%
  12. Antimony1%
  13. Cadmium1%
  14. Chromium<1%
  15. Nitrite<1%
  16. Selenium<1%
  17. Copper<1%
  • pH 7.49 pH
  • Conductivity 137 µS/cm
  • Phosphate 0.965 mg/L
All 20 results as a table
SubstanceResultLegal limitShare of limit
pH7.49 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
Manganese0.00077 mg/L0.05 mg/L
2%
Copper0.0032 mg/L2 mg/L
<1%
Fluoride0.05 mg/L1.5 mg/L
3%
Arsenic0.00014 mg/L0.01 mg/L
1%
Cadmium0.00006 mg/L0.005 mg/L
1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.0017 mg/L0.02 mg/L
9%
Lead0.00089 mg/L0.01 mg/L
9%
Antimony0.000062 mg/L0.005 mg/L
1%
Selenium0.00009 mg/L0.04 mg/L
<1%
Nitrate5.8 mg/L50 mg/L
12%
Nitrite0.003 mg/L0.5 mg/L
<1%
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.007 mg/L0.2 mg/L
3%
Conductivity137 µS/cmNo legal limit–
Trihalomethanes0.0451 mg/L0.1 mg/L
45%
Phosphate0.965 mg/LNo legal limit–

47mg of limescale minerals in every litre, typical for the SK area. SK17 has no reading of its own.

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 Wye from Source to Monk's Dale, rated good

The Environment Agency rated the Wye from Source to Monk's Dale as good for ecological health in its 2025 assessment, meaning the river is only slightly changed from its natural state. 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

SK17 in short

Tap water in SK17 (High Peak) is supplied by Severn Trent in the High Peak Central zone and scores 9.4 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 23 December 2025.

  • Trihalomethanes is the reading closest to its limit, at 45% of the 0.1 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 3rd cleanest of 5 areas tested in High PeakSquarely mid-table for High Peak, between SK13 on 9.7 and SK22 on 8.7.
  • Soft water at 47 mg/LLimescale is not a problem across the SK postcode area, so skip softeners and scale filters entirely. How hardness is measured

Next door

S339.6 out of 10 · 88 mg/LSK228.7 out of 10 · 47 mg/LSK239.3 out of 10 · 47 mg/LSK139.7 out of 10 · 47 mg/L

Questions about SK17 water

Is SK17 tap water safe to drink?

Based on the latest tests, SK17 (High Peak) water scores 9.4/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in SK17 water?

We tested 20 contaminants in SK17 water. None exceeded recommended safe levels.

Who supplies water in SK17?

SK17 (High Peak) is supplied by Severn Trent. You can view their full profile and compliance data on our supplier page.

Is SK17 water hard or soft?

No hardness reading has been published for SK17 itself. Across the SK postcode area the typical value is 47 mg/L CaCO3, which is classified as soft. Soft water is gentle on appliances and skin.

Should I use a water filter in SK17?

SK17 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 SK17 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SK17, 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 SK17?

The Environment Agency rated the Wye from Source to Monk's Dale as good for ecological health in its 2025 assessment, meaning the river is only slightly changed from its natural state. 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 SK17, 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 SK17

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
pH8.42 pHNone
Temperature12.7 °CNone
Conductivity507 µS/cmNone
Nitrate5.9 mg/L50 mg/L
Nitrite0.0068 mg/L0.5 mg/L
Phosphate0.05 mg/LNone
Dissolved Oxygen10.6 mg/LNone
Ammonia0.059 mg/L0.5 mg/L

Get alerts for your area

We'll email you when water quality data changes for SK17.

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