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tapwater
England and Wales average 9.0

Tap water in HU13, East Riding of YorkshireSafe to drink.Very hard.

Supplied by Yorkshire Water. 399 samples, 25 substances, latest on 16 September 2026. Everything is inside the legal limit, and nothing comes close to it.

Get softener quotes for HU13See everything that was tested

9.0 / 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 315 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 HU13 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 45% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.00006 mg/L, <1% of the 0.05 mg/L limitChromium<1%Cadmium: 0.00001 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Selenium: 0.00033 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Lead: 0.00009 mg/L, <1% of the 0.01 mg/L limitLead<1%Copper: 0.019 mg/L, <1% of the 2 mg/L limitCopper<1%Nitrite: 0.008 mg/L, 2% of the 0.5 mg/L limitNitrite2%Arsenic: 0.00017 mg/L, 2% of the 0.01 mg/L limitArsenic2%Manganese: 0.00101 mg/L, 2% of the 0.05 mg/L limitManganese2%Turbidity: 0.11 NTU, 3% of the 4 NTU limitTurbidity3%Antimony: 0.000141 mg/L, 3% of the 0.005 mg/L limitAntimony3%Boron: 0.0306 mg/L, 3% of the 1 mg/L limitBoron3%Iron: 0.00697 mg/L, 3% of the 0.2 mg/L limitIron3%Mercury: 0.00004 mg/L, 4% of the 0.001 mg/L limitMercury4%Aluminium: 0.0111 mg/L, 6% of the 0.2 mg/L limitAluminium6%Fluoride: 0.09 mg/L, 6% of the 1.5 mg/L limitFluoride6%Bromate: 0.001 mg/L, 10% of the 0.01 mg/L limitBromate10%Nickel: 0.00204 mg/L, 10% of the 0.02 mg/L limitNickel10%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Trihalomethanes: 0.0232 mg/L, 23% of the 0.1 mg/L limitTrihalomethanes23%Nitrate: 22.3 mg/L, 45% of the 50 mg/L limitNitrate45%
  1. Nitrate45%
  2. Trihalomethanes23%
  3. Colour15%
  4. Nickel10%
  5. Bromate10%
  6. Fluoride6%
  7. Aluminium6%
  8. Mercury4%
  9. Iron3%
  10. Boron3%
  11. Antimony3%
  12. Turbidity3%
  13. Manganese2%
  14. Arsenic2%
  15. Nitrite2%
  16. Copper<1%
  17. Lead<1%
  18. Selenium<1%
  19. Cadmium<1%
  20. Chromium<1%
  • E. coli none found
  • Coliform Bacteria none found
  • Conductivity 683 µS/cm
  • Phosphate 0.796 mg/L
All 25 results as a table
SubstanceResultLegal limitShare of limit
E. coli0 count/100mlMust be zeroNone found
Coliform Bacteria0 count/100mlMust be zeroNone found
Turbidity0.11 NTU4 NTU
3%
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Aluminium0.0111 mg/L0.2 mg/L
6%
Iron0.00697 mg/L0.2 mg/L
3%
Manganese0.00101 mg/L0.05 mg/L
2%
Conductivity683 µS/cmNo legal limit–
Phosphate0.796 mg/LNo legal limit–
Bromate0.001 mg/L0.01 mg/L
10%
Fluoride0.09 mg/L1.5 mg/L
6%
Mercury0.00004 mg/L0.001 mg/L
4%
Trihalomethanes0.0232 mg/L0.1 mg/L
23%
Copper0.019 mg/L2 mg/L
<1%
Lead0.00009 mg/L0.01 mg/L
<1%
Selenium0.00033 mg/L0.04 mg/L
<1%
Antimony0.000141 mg/L0.005 mg/L
3%
Arsenic0.00017 mg/L0.01 mg/L
2%
Nickel0.00204 mg/L0.02 mg/L
10%
Chromium0.00006 mg/L0.05 mg/L
<1%
Cadmium0.00001 mg/L0.005 mg/L
<1%
Boron0.0306 mg/L1 mg/L
3%
Nitrite0.008 mg/L0.5 mg/L
2%
Nitrate22.3 mg/L50 mg/L
45%
Hardness (as CaCO3)367 mg/LNo legal limit–

315mg 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 Fleet Drain, rated moderate

The Environment Agency rated the Fleet Drain as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by insects and other small river life, dissolved oxygen 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

176

forever-chemical detections in nearby rivers and groundwater

At 4 sites. The highest was 6:2 FTSA at 0.13 µg/L, at Barrow Crossroads B/H, 7.8 km away, in April 2026. These are river and borehole samples, not tests of your tap water.

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

HU13 in short

Tap water in HU13 (East Riding of Yorkshire) is supplied by Yorkshire Water in the East Riding of Yorkshire Central zone and scores 9.0 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 16 September 2026.

  • Among the hardest water in the country at 315 mg/LVery hard starts at 250 mg/L. At this level kettles scale up within weeks and a softener is a normal purchase in HU13. How hardness is measured
  • Nitrate is the reading closest to its limit, at 45% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 5th cleanest of 18 areas tested in HullOnly 4 areas in Hull scored higher. The best is DN14 on 9.2. Every area in Hull

Next door

HU159.1 out of 10 · 296 mg/LHU119.0 out of 10 · 231 mg/LHU189.0 out of 10 · 242 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/LDN149.2 out of 10 · 286 mg/LHU108.9 out of 10 · 366 mg/L

Questions about HU13 water

Is HU13 tap water safe to drink?

Based on the latest tests, HU13 (East Riding of Yorkshire) water scores 9/10, which is safe. 0 of 25 tested contaminants exceeded recommended levels. Water is supplied by Yorkshire Water.

What contaminants are in HU13 water?

We tested 25 contaminants in HU13 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 HU13?

HU13 (East Riding of Yorkshire) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is HU13 water hard or soft?

Water in HU13 (East Riding of Yorkshire) has a hardness of 315 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 HU13?

HU13 water scored 9/10 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 HU13 water?

The tap-water tests we hold for HU13 do not include a PFAS result. Environment Agency monitoring found PFAS in 176 river and groundwater samples from 4 sites within 10 km of HU13, the highest being 6:2 FTSA at 0.13 µg/L about 7.8 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 HU13?

The Environment Agency rated the Fleet Drain as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by insects and other small river life, dissolved oxygen 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 HU13, 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 HU13

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
pH8.21 pHNone
Temperature17.4 °CNone
Conductivity1294 µS/cmNone
Phosphate2.1 mg/LNone
Nitrate0.29 mg/L50 mg/L
Ammonia0.036 mg/L0.5 mg/L
Nitrite0.011 mg/L0.5 mg/L
Dissolved Oxygen11 mg/LNone
Copper0.000924 mg/L2 mg/L
Zinc0.0068 mg/LNone

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We'll email you when water quality data changes for HU13.

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