Tap water in SK13, High PeakSafe to drink.Soft.
Supplied by Severn Trent. 26 samples, 7 substances, latest on 5 November 2025. Everything is inside the legal limit, and nothing comes close to it.
9.7 / 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
£40typical price
Households concerned about PFAS and heavy metals
Waterdrop 10UA Under Sink
£70typical price
High-volume under-sink filtration without RO complexity
BRITA Marella XL + MAXTRA PRO
£25typical price
Basic chlorine and taste improvement on a budget
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What's in a glass of SK13 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.
Aluminium came closest to a limit, at 5% of it. 5 of 5 substances used under a quarter of theirs.
- Aluminium5%
- Colour4%
- Turbidity3%
- Iron2%
- Manganese2%
- pH 7.72 pH
- Conductivity 132 µS/cm
47mg of limescale minerals in every litre, typical for the SK area. SK13 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.
Your river is the Glossop (Shelf) Brook (Source to Long Clough Brook), rated moderate
The Environment Agency rated the Glossop (Shelf) Brook (Source to Long Clough Brook) 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 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
65
forever-chemical detections in nearby rivers and groundwater
At 5 sites. The highest was PFOA at 0.059 µg/L, at Ashton-U-Lyne Golf Club BH SD90/308, 9.2 km away, in September 2024. These are river and borehole samples, not tests of your tap water.
Every PFAS sample around Stockport · Which filters remove PFAS · PFAS explained
SK13 in short
Tap water in SK13 (High Peak) is supplied by Severn Trent in the High Peak Central zone and scores 9.7 out of 10, against an England and Wales average of 9.0. None of the 7 tested substances came close to a limit. The latest sample is from 5 November 2025.
- The cleanest tap water of the 5 areas tested in High PeakSK13 scores 9.7 out of 10, ahead of S33 in second place on 9.6.
- Scores higher than all 4 neighbouring districtsThe nearest rival is S33 on 9.6, against 9.7 here. Compare with S33
- 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
Questions about SK13 water
Is SK13 tap water safe to drink?
Based on the latest tests, SK13 (High Peak) water scores 9.7/10, which is safe. 0 of 7 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.
What contaminants are in SK13 water?
We tested 7 contaminants in SK13 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 SK13?
SK13 (High Peak) is supplied by Severn Trent. You can view their full profile and compliance data on our supplier page.
Is SK13 water hard or soft?
No hardness reading has been published for SK13 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 SK13?
SK13 water scored 9.7/10 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 SK13 water?
The tap-water tests we hold for SK13 do not include a PFAS result. Environment Agency monitoring found PFAS in 65 river and groundwater samples from 5 sites within 10 km of SK13, the highest being PFOA at 0.059 µg/L about 9.2 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 SK13?
The Environment Agency rated the Glossop (Shelf) Brook (Source to Long Clough Brook) 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 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 SK13, which is treated before it reaches homes.
Keep reading
- Best Filter for PFAS RemovalThe filters with independent certification to remove forever chemicals
- PFAS Forever ChemicalsWhat PFAS are and how to reduce your exposure at home
- Is UK Tap Water Safe?Everything you need to know about tap water safety in the UK
- Best Water Filters UKEvery filter type compared on what it actually removes
PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map
River and groundwater readings near SK13
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.
| Substance | Reading | Drinking water limit |
|---|---|---|
| Iron | 0.37 mg/L | 0.2 mg/L |
| pH | 7.4 pH | None |
| Copper | 0.00006 mg/L | 2 mg/L |
| Temperature | 6.2 °C | None |
| Conductivity | 67 µS/cm | None |
| Ammonia | 0.019 mg/L | 0.5 mg/L |
| Nitrate | 0.53 mg/L | 50 mg/L |
| Nitrite | 0.0013 mg/L | 0.5 mg/L |
| Phosphate | 0.0084 mg/L | None |
| Turbidity | 1.8 NTU | 4 NTU |
| Dissolved Oxygen | 12.4 mg/L | None |
| Hardness (as CaCO3) | 39.2 mg/L | None |
| PFAS (total) | 0.0012 µg/L | None |
Get alerts for your area
We'll email you when water quality data changes for SK13.