Skip to main content
tapwater
England and Wales average 9.0

Tap water in S10, SheffieldSafe to drink.Soft.

Supplied by Yorkshire Water. 1,488 samples, 25 substances, latest on 15 September 2026. 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

Check price at Amazon (opens in new tab)
Waterdrop 10UA Under Sink

Waterdrop 10UA Under Sink

£70typical price

High-volume under-sink filtration without RO complexity

Check price at Waterdrop (opens in new tab)
BRITA Marella XL + MAXTRA PRO

BRITA Marella XL + MAXTRA PRO

£25typical price

Basic chlorine and taste improvement on a budget

Check price at Amazon (opens in new tab)

We earn a commission if you buy through these links, at no extra cost to you. It never changes which product we put first. How we make money

What's in a glass of S10 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 30% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.00187 mg/L, <1% of the 2 mg/L limitCopper<1%Chromium: 0.00019 mg/L, <1% of the 0.05 mg/L limitChromium<1%Cadmium: 0.000033 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Lead: 0.00009 mg/L, <1% of the 0.01 mg/L limitLead<1%Selenium: 0.00043 mg/L, 1% of the 0.04 mg/L limitSelenium1%Antimony: 0.000063 mg/L, 1% of the 0.005 mg/L limitAntimony1%Boron: 0.0144 mg/L, 1% of the 1 mg/L limitBoron1%Arsenic: 0.00015 mg/L, 1% of the 0.01 mg/L limitArsenic1%Manganese: 0.00101 mg/L, 2% of the 0.05 mg/L limitManganese2%Turbidity: 0.11 NTU, 3% of the 4 NTU limitTurbidity3%Iron: 0.00629 mg/L, 3% of the 0.2 mg/L limitIron3%Mercury: 0.00004 mg/L, 4% of the 0.001 mg/L limitMercury4%Fluoride: 0.06 mg/L, 4% of the 1.5 mg/L limitFluoride4%Aluminium: 0.0111 mg/L, 6% of the 0.2 mg/L limitAluminium6%Nickel: 0.0012 mg/L, 6% of the 0.02 mg/L limitNickel6%Nitrate: 5.71 mg/L, 11% of the 50 mg/L limitNitrate11%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Bromate: 0.0022 mg/L, 22% of the 0.01 mg/L limitBromate22%Nitrite: 0.11 mg/L, 22% of the 0.5 mg/L limitNitrite22%Trihalomethanes: 0.0302 mg/L, 30% of the 0.1 mg/L limitTrihalomethanes30%
  1. Trihalomethanes30%
  2. Bromate22%
  3. Nitrite22%
  4. Colour15%
  5. Nitrate11%
  6. Nickel6%
  7. Aluminium6%
  8. Mercury4%
  9. Fluoride4%
  10. Iron3%
  11. Turbidity3%
  12. Manganese2%
  13. Arsenic1%
  14. Boron1%
  15. Antimony1%
  16. Selenium1%
  17. Lead<1%
  18. Cadmium<1%
  19. Chromium<1%
  20. Copper<1%
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 130 µS/cm
  • Phosphate 1.36 mg/L
All 25 results as a table
SubstanceResultLegal limitShare of limit
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Conductivity130 µS/cmNo legal limit–
Turbidity0.11 NTU4 NTU
3%
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Iron0.00629 mg/L0.2 mg/L
3%
Aluminium0.0111 mg/L0.2 mg/L
6%
Manganese0.00101 mg/L0.05 mg/L
2%
Antimony0.000063 mg/L0.005 mg/L
1%
Selenium0.00043 mg/L0.04 mg/L
1%
Arsenic0.00015 mg/L0.01 mg/L
1%
Bromate0.0022 mg/L0.01 mg/L
22%
Trihalomethanes0.0302 mg/L0.1 mg/L
30%
Mercury0.00004 mg/L0.001 mg/L
4%
Copper0.00187 mg/L2 mg/L
<1%
Nitrite0.11 mg/L0.5 mg/L
22%
Nitrate5.71 mg/L50 mg/L
11%
Boron0.0144 mg/L1 mg/L
1%
Nickel0.0012 mg/L0.02 mg/L
6%
Chromium0.00019 mg/L0.05 mg/L
<1%
Cadmium0.000033 mg/L0.005 mg/L
<1%
Fluoride0.06 mg/L1.5 mg/L
4%
Lead0.00009 mg/L0.01 mg/L
<1%
Phosphate1.36 mg/LNo legal limit–
Hardness (as CaCO3)56.9 mg/LNo legal limit–

30mg 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 Porter from Source to River Sheaf, rated moderate

The Environment Agency rated the Porter from Source to River Sheaf 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. 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

108

forever-chemical detections in nearby rivers and groundwater

At 5 sites. The highest was PFOS (total) at 0.38 µg/L, at Hillsborough Golf Club, 4.5 km away, in March 2026. These are river and borehole samples, not tests of your tap water.

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

S10 in short

Tap water in S10 (Sheffield) is supplied by Yorkshire Water in the Sheffield Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 25 tested substances came close to a limit. The latest sample is from 15 September 2026.

  • 13th cleanest of 17 areas tested in Sheffield4 areas in Sheffield scored lower. The best is S20 on 10. Every area in Sheffield
  • Soft water at 30 mg/LLimescale is not a problem in S10, so skip softeners and scale filters entirely. How hardness is measured
  • PFAS found at 5 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFOS (total) about 4.5 km away. What was measured

Next door

S119.6 out of 10 · 35 mg/LS89.6 out of 10 · 32 mg/LS69.3 out of 10 · 70 mg/LS79.7 out of 10 · 41 mg/LS19.4 out of 10 · 70 mg/LS29.5 out of 10 · 30 mg/LS39.4 out of 10 · 56 mg/LS59.3 out of 10 · 63 mg/LS129.6 out of 10 · 21 mg/LS49.6 out of 10 · 31 mg/L

Questions about S10 water

Is S10 tap water safe to drink?

Based on the latest tests, S10 (Sheffield) water scores 9.4/10, which is safe. 0 of 25 tested contaminants exceeded recommended levels. Water is supplied by Yorkshire Water.

What contaminants are in S10 water?

We tested 25 contaminants in S10 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 S10?

S10 (Sheffield) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is S10 water hard or soft?

Water in S10 (Sheffield) has a hardness of 30 mg/L CaCO3, which is classified as soft. Soft water is gentle on appliances and skin.

Should I use a water filter in S10?

S10 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 S10 water?

The tap-water tests we hold for S10 do not include a PFAS result. Environment Agency monitoring found PFAS in 108 river and groundwater samples from 5 sites within 10 km of S10, the highest being PFOS (total) at 0.38 µg/L about 4.5 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 S10?

The Environment Agency rated the Porter from Source to River Sheaf 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. 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 S10, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsAll of SheffieldUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near S10

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
pH7.8 pHNone
Temperature14.5 °CNone
Ammonia0.049 mg/L0.5 mg/L
Nitrate2.45 mg/L50 mg/L
Nitrite0.0167 mg/L0.5 mg/L
Phosphate0.066 mg/LNone
Dissolved Oxygen7.93 mg/LNone
Conductivity270 µS/cmNone
Hardness (as CaCO3)96.9 mg/LNone
Copper0.00193 mg/L2 mg/L

Get alerts for your area

We'll email you when water quality data changes for S10.

Source: Yorkshire Water 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