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tapwater
England and Wales average 9.0

Tap water in DN14, East Riding of YorkshireSafe to drink.Very hard.

Supplied by Yorkshire Water. 1,084 samples, 25 substances, latest on 25 September 2026. Everything is inside the legal limit, and nothing comes close to it.

Get softener quotes for DN14See 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 286 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 DN14 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 48% 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%Copper: 0.0109 mg/L, <1% of the 2 mg/L limitCopper<1%Cadmium: 0.000031 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Selenium: 0.00043 mg/L, 1% of the 0.04 mg/L limitSelenium1%Nitrite: 0.008 mg/L, 2% of the 0.5 mg/L limitNitrite2%Lead: 0.00017 mg/L, 2% of the 0.01 mg/L limitLead2%Antimony: 0.000101 mg/L, 2% of the 0.005 mg/L limitAntimony2%Boron: 0.0271 mg/L, 3% of the 1 mg/L limitBoron3%Turbidity: 0.11 NTU, 3% of the 4 NTU limitTurbidity3%Bromate: 0.0003 mg/L, 3% of the 0.01 mg/L limitBromate3%Iron: 0.00647 mg/L, 3% of the 0.2 mg/L limitIron3%Manganese: 0.00164 mg/L, 3% of the 0.05 mg/L limitManganese3%Nickel: 0.00069 mg/L, 3% of the 0.02 mg/L limitNickel3%Mercury: 0.00004 mg/L, 4% of the 0.001 mg/L limitMercury4%Fluoride: 0.07 mg/L, 5% of the 1.5 mg/L limitFluoride5%Aluminium: 0.0111 mg/L, 6% of the 0.2 mg/L limitAluminium6%Trihalomethanes: 0.0104 mg/L, 10% of the 0.1 mg/L limitTrihalomethanes10%Arsenic: 0.00111 mg/L, 11% of the 0.01 mg/L limitArsenic11%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Nitrate: 24.1 mg/L, 48% of the 50 mg/L limitNitrate48%
  1. Nitrate48%
  2. Colour15%
  3. Arsenic11%
  4. Trihalomethanes10%
  5. Aluminium6%
  6. Fluoride5%
  7. Mercury4%
  8. Nickel3%
  9. Manganese3%
  10. Iron3%
  11. Bromate3%
  12. Turbidity3%
  13. Boron3%
  14. Antimony2%
  15. Lead2%
  16. Nitrite2%
  17. Selenium1%
  18. Cadmium<1%
  19. Copper<1%
  20. Chromium<1%
  • E. coli none found
  • Coliform Bacteria none found
  • Conductivity 518 µS/cm
  • Phosphate 1.02 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
Manganese0.00164 mg/L0.05 mg/L
3%
Aluminium0.0111 mg/L0.2 mg/L
6%
Iron0.00647 mg/L0.2 mg/L
3%
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Conductivity518 µS/cmNo legal limit–
Turbidity0.11 NTU4 NTU
3%
Nitrite0.008 mg/L0.5 mg/L
2%
Nitrate24.1 mg/L50 mg/L
48%
Phosphate1.02 mg/LNo legal limit–
Hardness (as CaCO3)317 mg/LNo legal limit–
Fluoride0.07 mg/L1.5 mg/L
5%
Trihalomethanes0.0104 mg/L0.1 mg/L
10%
Copper0.0109 mg/L2 mg/L
<1%
Antimony0.000101 mg/L0.005 mg/L
2%
Selenium0.00043 mg/L0.04 mg/L
1%
Mercury0.00004 mg/L0.001 mg/L
4%
Bromate0.0003 mg/L0.01 mg/L
3%
Lead0.00017 mg/L0.01 mg/L
2%
Arsenic0.00111 mg/L0.01 mg/L
11%
Cadmium0.000031 mg/L0.005 mg/L
<1%
Chromium0.00019 mg/L0.05 mg/L
<1%
Nickel0.00069 mg/L0.02 mg/L
3%
Boron0.0271 mg/L1 mg/L
3%

286mg 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 Aire from Fryston Beck to River Ouse, rated moderate

The Environment Agency rated the Aire from Fryston Beck to River Ouse 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, insects and other small river life and temperature. 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

DN14 in short

Tap water in DN14 (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 25 September 2026.

  • The cleanest tap water of the 18 areas tested in HullDN14 scores 9.2 out of 10, ahead of YO41 in second place on 9.2. Every area in Hull
  • Very hard water at 286 mg/LThe threshold for very hard is 250 mg/L. Expect visible limescale on taps and in kettles in DN14. 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/LHU159.1 out of 10 · 296 mg/LHU189.0 out of 10 · 242 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/LYO159.0 out of 10 · 297 mg/L

Questions about DN14 water

Is DN14 tap water safe to drink?

Based on the latest tests, DN14 (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 DN14 water?

We tested 25 contaminants in DN14 water. None exceeded recommended safe levels.

Who supplies water in DN14?

DN14 (East Riding of Yorkshire) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is DN14 water hard or soft?

Water in DN14 (East Riding of Yorkshire) has a hardness of 286 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 DN14?

DN14 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 DN14 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for DN14, and the Environment Agency has no PFAS detections in rivers or groundwater within 10 km of it. That reflects where sampling has happened as much as the water itself.

How clean is the river near DN14?

The Environment Agency rated the Aire from Fryston Beck to River Ouse 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, insects and other small river life and temperature. 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 DN14, which is treated before it reaches homes.

Keep reading

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

River and groundwater readings near DN14

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
pH8.09 pHNone
Temperature10.1 °CNone
Conductivity609 µS/cmNone
Ammonia0.096 mg/L0.5 mg/L
Nitrate4.6 mg/L50 mg/L
Nitrite0.036 mg/L0.5 mg/L
Phosphate0.1 mg/LNone
Dissolved Oxygen10.5 mg/LNone
Zinc0.016 mg/LNone
Hardness (as CaCO3)424 mg/LNone
Iron0.068 mg/L0.2 mg/L
Copper0.00332 mg/L2 mg/L

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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