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tapwater
England and Wales average 9.0

Tap water in YO41, East Riding of YorkshireSafe to drink.Very hard.

Supplied by Yorkshire Water. 662 samples, 25 substances, latest on 17 September 2026. Everything is inside the legal limit, and nothing comes close to it.

Get softener quotes for YO41See everything that was tested

9.2 / 10

The tank is as full as the score. The specks are the minerals that make water hard.

What to do about it

Hard water: compare softener quotes

At 297 mg/L a softener is the only thing that stops limescale. Filters do not soften water.

It pays for itself in most homes at this hardness, through a boiler that stays efficient and appliances that last.

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What's in a glass of YO41 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.

Nitrate came closest to a limit, at 35% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 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%Copper: 0.0157 mg/L, <1% of the 2 mg/L limitCopper<1%Selenium: 0.00043 mg/L, 1% of the 0.04 mg/L limitSelenium1%Lead: 0.00014 mg/L, 1% of the 0.01 mg/L limitLead1%Antimony: 0.000073 mg/L, 1% of the 0.005 mg/L limitAntimony1%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%Boron: 0.0254 mg/L, 3% of the 1 mg/L limitBoron3%Turbidity: 0.11 NTU, 3% of the 4 NTU limitTurbidity3%Manganese: 0.00178 mg/L, 4% of the 0.05 mg/L limitManganese4%Fluoride: 0.06 mg/L, 4% of the 1.5 mg/L limitFluoride4%Mercury: 0.00004 mg/L, 4% of the 0.001 mg/L limitMercury4%Iron: 0.00928 mg/L, 5% of the 0.2 mg/L limitIron5%Aluminium: 0.0113 mg/L, 6% of the 0.2 mg/L limitAluminium6%Nickel: 0.00148 mg/L, 7% of the 0.02 mg/L limitNickel7%Bromate: 0.001 mg/L, 10% of the 0.01 mg/L limitBromate10%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Trihalomethanes: 0.0204 mg/L, 20% of the 0.1 mg/L limitTrihalomethanes20%Nitrate: 17.4 mg/L, 35% of the 50 mg/L limitNitrate35%
  1. Nitrate35%
  2. Trihalomethanes20%
  3. Colour15%
  4. Bromate10%
  5. Nickel7%
  6. Aluminium6%
  7. Iron5%
  8. Fluoride4%
  9. Mercury4%
  10. Manganese4%
  11. Turbidity3%
  12. Boron3%
  13. Nitrite2%
  14. Arsenic1%
  15. Antimony1%
  16. Lead1%
  17. Selenium1%
  18. Copper<1%
  19. Cadmium<1%
  20. Chromium<1%
  • Conductivity 616 µS/cm
  • E. coli none found
  • Coliform Bacteria none found
  • Phosphate 1.08 mg/L
All 25 results as a table
SubstanceResultLegal limitShare of limit
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Conductivity616 µS/cmNo legal limit–
Turbidity0.11 NTU4 NTU
3%
E. coli0 count/100mlMust be zeroNone found
Aluminium0.0113 mg/L0.2 mg/L
6%
Iron0.00928 mg/L0.2 mg/L
5%
Manganese0.00178 mg/L0.05 mg/L
4%
Coliform Bacteria0 count/100mlMust be zeroNone found
Phosphate1.08 mg/LNo legal limit–
Fluoride0.06 mg/L1.5 mg/L
4%
Mercury0.00004 mg/L0.001 mg/L
4%
Selenium0.00043 mg/L0.04 mg/L
1%
Arsenic0.00015 mg/L0.01 mg/L
1%
Antimony0.000073 mg/L0.005 mg/L
1%
Copper0.0157 mg/L2 mg/L
<1%
Bromate0.001 mg/L0.01 mg/L
10%
Nickel0.00148 mg/L0.02 mg/L
7%
Chromium0.00019 mg/L0.05 mg/L
<1%
Cadmium0.000031 mg/L0.005 mg/L
<1%
Boron0.0254 mg/L1 mg/L
3%
Nitrite0.008 mg/L0.5 mg/L
2%
Nitrate17.4 mg/L50 mg/L
35%
Lead0.00014 mg/L0.01 mg/L
1%
Trihalomethanes0.0204 mg/L0.1 mg/L
20%
Hardness (as CaCO3)307 mg/LNo legal limit–

297mg of limescale minerals in every litre

This is the water that furs up kettles

Very hard on the UK scale. It is fine to drink. It is hard on boilers, showers, skin and anything that heats water, and a jug or tap filter will not change that.

Soft400 mg/L

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Outside your tap

Your river is the Blackfoss Bk lower Catch (trib of Pocklington Bk), rated poor

The Environment Agency rated the Blackfoss Bk lower Catch (trib of Pocklington Bk) as poor for ecological health in its 2025 assessment, meaning the river is badly affected, with much of the expected wildlife missing. It is held back by water plants and algae, ammonia 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

Within 10 km

41

forever-chemical detections in nearby rivers and groundwater

At 4 sites. The highest was PFOA at 0.014 µg/L, at RSN0432 Blackfoss Bck at Whiteland Field, 4.4 km away, in April 2026. These are river and borehole samples, not tests of your tap water.

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

YO41 in short

Tap water in YO41 (East Riding of Yorkshire) is supplied by Yorkshire Water in the East Riding of Yorkshire Central zone and scores 9.2 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 17 September 2026.

  • 2nd cleanest of 18 areas tested in HullOnly 1 area in Hull scored higher. The best is DN14 on 9.2. Every area in Hull
  • Very hard water at 297 mg/LThe threshold for very hard is 250 mg/L. Expect visible limescale on taps and in kettles in YO41. How hardness is measured
  • Scores higher than all 10 neighbouring districtsThe nearest rival is HU15 on 9.1, against 9.2 here. Compare with HU15

Next door

HU119.0 out of 10 · 231 mg/LHU189.0 out of 10 · 242 mg/LHU159.1 out of 10 · 296 mg/LHU139.0 out of 10 · 315 mg/LHU178.6 out of 10 · 337 mg/LHU148.8 out of 10 · 302 mg/LHU168.5 out of 10 · 373 mg/LHU199.0 out of 10 · 262 mg/LHU208.8 out of 10 · 315 mg/LHU108.9 out of 10 · 366 mg/L

Questions about YO41 water

Is YO41 tap water safe to drink?

Based on the latest tests, YO41 (East Riding of Yorkshire) water scores 9.2/10, which is safe. 0 of 25 tested contaminants exceeded recommended levels. Water is supplied by Yorkshire Water.

What contaminants are in YO41 water?

We tested 25 contaminants in YO41 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 YO41?

YO41 (East Riding of Yorkshire) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is YO41 water hard or soft?

Water in YO41 (East Riding of Yorkshire) has a hardness of 297 mg/L CaCO3, which is classified as very hard. Hard water can cause limescale buildup. A water softener or filter jug may help.

Should I use a water filter in YO41?

YO41 water scored 9.2/10 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 YO41 water?

The tap-water tests we hold for YO41 do not include a PFAS result. Environment Agency monitoring found PFAS in 41 river and groundwater samples from 4 sites within 10 km of YO41, the highest being PFOA at 0.014 µg/L about 4.4 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 YO41?

The Environment Agency rated the Blackfoss Bk lower Catch (trib of Pocklington Bk) as poor for ecological health in its 2025 assessment, meaning the river is badly affected, with much of the expected wildlife missing. It is held back by water plants and algae, ammonia 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 YO41, which is treated before it reaches homes.

Keep reading

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

River and groundwater readings near YO41

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
pH7.95 pHNone
Temperature16.7 °CNone
Conductivity609 µS/cmNone
Nitrate4.9 mg/L50 mg/L
Nitrite0.018 mg/L0.5 mg/L
Phosphate0.066 mg/LNone
Dissolved Oxygen8.6 mg/LNone
Ammonia0.00091 mg/L0.5 mg/L
PFAS (total)0.00074 µg/LNone

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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