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tapwater
England and Wales average 9.0

Tap water in S13, SheffieldSafe to drink.Moderately soft.

Supplied by Yorkshire Water. 1,003 samples, 25 substances, latest on 29 September 2026. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.6 / 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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Basic chlorine and taste improvement on a budget

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What's in a glass of S13 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 34% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.00502 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: 0.000031 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%Antimony: 0.000053 mg/L, 1% of the 0.005 mg/L limitAntimony1%Selenium: 0.00043 mg/L, 1% of the 0.04 mg/L limitSelenium1%Boron: 0.0133 mg/L, 1% of the 1 mg/L limitBoron1%Arsenic: 0.00015 mg/L, 1% of the 0.01 mg/L limitArsenic1%Nitrite: 0.008 mg/L, 2% of the 0.5 mg/L limitNitrite2%Manganese: 0.00101 mg/L, 2% of the 0.05 mg/L limitManganese2%Iron: 0.00629 mg/L, 3% of the 0.2 mg/L limitIron3%Turbidity: 0.13 NTU, 3% of the 4 NTU limitTurbidity3%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: 0.00117 mg/L, 6% of the 0.02 mg/L limitNickel6%Nitrate: 4.21 mg/L, 8% of the 50 mg/L limitNitrate8%Bromate: 0.0013 mg/L, 13% of the 0.01 mg/L limitBromate13%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Trihalomethanes: 0.0336 mg/L, 34% of the 0.1 mg/L limitTrihalomethanes34%
  1. Trihalomethanes34%
  2. Colour15%
  3. Bromate13%
  4. Nitrate8%
  5. Nickel6%
  6. Aluminium6%
  7. Mercury4%
  8. Fluoride4%
  9. Turbidity3%
  10. Iron3%
  11. Manganese2%
  12. Nitrite2%
  13. Arsenic1%
  14. Boron1%
  15. Selenium1%
  16. Antimony1%
  17. Lead<1%
  18. Cadmium<1%
  19. Chromium<1%
  20. Copper<1%
  • Coliform Bacteria none found
  • Conductivity 208 µS/cm
  • E. coli none found
  • Phosphate 0 mg/L
All 25 results as a table
SubstanceResultLegal limitShare of limit
Coliform Bacteria0 count/100mlMust be zeroNone found
Aluminium0.0111 mg/L0.2 mg/L
6%
Iron0.00629 mg/L0.2 mg/L
3%
Manganese0.00101 mg/L0.05 mg/L
2%
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Conductivity208 µS/cmNo legal limit–
Turbidity0.13 NTU4 NTU
3%
E. coli0 count/100mlMust be zeroNone found
Phosphate0 mg/LNo legal limit–
Mercury0.00004 mg/L0.001 mg/L
4%
Copper0.00502 mg/L2 mg/L
<1%
Trihalomethanes0.0336 mg/L0.1 mg/L
34%
Arsenic0.00015 mg/L0.01 mg/L
1%
Antimony0.000053 mg/L0.005 mg/L
1%
Bromate0.0013 mg/L0.01 mg/L
13%
Lead0.00009 mg/L0.01 mg/L
<1%
Nickel0.00117 mg/L0.02 mg/L
6%
Chromium0.00019 mg/L0.05 mg/L
<1%
Cadmium0.000031 mg/L0.005 mg/L
<1%
Boron0.0133 mg/L1 mg/L
1%
Nitrite0.008 mg/L0.5 mg/L
2%
Nitrate4.21 mg/L50 mg/L
8%
Fluoride0.06 mg/L1.5 mg/L
4%
Selenium0.00043 mg/L0.04 mg/L
1%
Hardness (as CaCO3)68.7 mg/LNo legal limit–

105mg 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 Rother, Doe Lea to Don, rated moderate

The Environment Agency rated the Rother, Doe Lea to Don as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by phosphate and insects and other small river life. 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

66

forever-chemical detections in nearby rivers and groundwater

At 5 sites. The highest was PFOS (linear) at 0.012 µg/L, at Don at Halfpenny Bridge Templeborough, 6.1 km away, in December 2023. These are river and borehole samples, not tests of your tap water.

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

S13 in short

Tap water in S13 (Sheffield) is supplied by Yorkshire Water in the Sheffield Central zone and scores 9.6 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 29 September 2026.

  • 6th cleanest of 17 areas tested in SheffieldOnly 5 areas in Sheffield scored higher. The best is S20 on 10. Every area in Sheffield
  • 0.6 points above the national average of 9Cleaner than the typical tested district in the UK. Compare every area
  • PFAS found at 5 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFOS (linear) about 6.1 km away. What was measured

Next door

S109.4 out of 10 · 30 mg/LS89.6 out of 10 · 32 mg/LS69.3 out of 10 · 70 mg/LS119.6 out of 10 · 35 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/L

Questions about S13 water

Is S13 tap water safe to drink?

Based on the latest tests, S13 (Sheffield) water scores 9.6/10, which is safe. 0 of 25 tested contaminants exceeded recommended levels. Water is supplied by Yorkshire Water.

What contaminants are in S13 water?

We tested 25 contaminants in S13 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 S13?

S13 (Sheffield) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is S13 water hard or soft?

Water in S13 (Sheffield) has a hardness of 105 mg/L CaCO3, which is classified as moderately soft. This is a moderate hardness level.

Should I use a water filter in S13?

S13 water scored 9.6/10 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 S13 water?

The tap-water tests we hold for S13 do not include a PFAS result. Environment Agency monitoring found PFAS in 66 river and groundwater samples from 5 sites within 10 km of S13, the highest being PFOS (linear) at 0.012 µg/L about 6.1 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 S13?

The Environment Agency rated the Rother, Doe Lea to Don as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by phosphate and insects and other small river life. 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 S13, 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 S13

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
pH7.71 pHNone
Temperature15.2 °CNone
Conductivity1887 µS/cmNone
Ammonia0.05 mg/L0.5 mg/L
Nitrate0.44 mg/L50 mg/L
Nitrite0.0072 mg/L0.5 mg/L
Dissolved Oxygen9.63 mg/LNone
Phosphate0.011 mg/LNone
Hardness (as CaCO3)349 mg/LNone
Copper0.0019 mg/L2 mg/L
Zinc0.00595 mg/LNone

Get alerts for your area

We'll email you when water quality data changes for S13.

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