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tapwater
England and Wales average 9.0

Tap water in HG1, North YorkshireSafe to drink.Soft.

Supplied by Yorkshire Water. 1,112 samples, 25 substances, latest on 16 September 2026. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.5 / 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 HG1 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 37% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitNitrite: 0 mg/L, 0% of the 0.5 mg/L limitNitrite0%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%Boron: 0.0098 mg/L, <1% of the 1 mg/L limitBoron<1%Selenium: 0.00043 mg/L, 1% of the 0.04 mg/L limitSelenium1%Copper: 0.0227 mg/L, 1% of the 2 mg/L limitCopper1%Antimony: 0.000063 mg/L, 1% of the 0.005 mg/L limitAntimony1%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: 0.07 mg/L, 5% of the 1.5 mg/L limitFluoride5%Aluminium: 0.0111 mg/L, 6% of the 0.2 mg/L limitAluminium6%Nitrate: 3.73 mg/L, 7% of the 50 mg/L limitNitrate7%Nickel: 0.00164 mg/L, 8% of the 0.02 mg/L limitNickel8%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%Trihalomethanes: 0.0375 mg/L, 37% of the 0.1 mg/L limitTrihalomethanes37%
  1. Trihalomethanes37%
  2. Bromate22%
  3. Colour15%
  4. Nickel8%
  5. Nitrate7%
  6. Aluminium6%
  7. Fluoride5%
  8. Mercury4%
  9. Iron3%
  10. Turbidity3%
  11. Manganese2%
  12. Arsenic1%
  13. Antimony1%
  14. Copper1%
  15. Selenium1%
  16. Boron<1%
  17. Lead<1%
  18. Cadmium<1%
  19. Chromium<1%
  20. Nitrite0%
  • Coliform Bacteria none found
  • Conductivity 145 µS/cm
  • E. coli none found
  • Phosphate 0.701 mg/L
All 25 results as a table
SubstanceResultLegal limitShare of limit
Coliform Bacteria0 count/100mlMust be zeroNone found
Turbidity0.11 NTU4 NTU
3%
Conductivity145 µS/cmNo legal limit–
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%
E. coli0 count/100mlMust be zeroNone found
Phosphate0.701 mg/LNo legal limit–
Mercury0.00004 mg/L0.001 mg/L
4%
Antimony0.000063 mg/L0.005 mg/L
1%
Selenium0.00043 mg/L0.04 mg/L
1%
Arsenic0.00015 mg/L0.01 mg/L
1%
Fluoride0.07 mg/L1.5 mg/L
5%
Bromate0.0022 mg/L0.01 mg/L
22%
Cadmium0.000031 mg/L0.005 mg/L
<1%
Nickel0.00164 mg/L0.02 mg/L
8%
Chromium0.00019 mg/L0.05 mg/L
<1%
Nitrite0 mg/L0.5 mg/L
<1%
Nitrate3.73 mg/L50 mg/L
7%
Boron0.0098 mg/L1 mg/L
<1%
Copper0.0227 mg/L2 mg/L
1%
Lead0.00009 mg/L0.01 mg/L
<1%
Trihalomethanes0.0375 mg/L0.1 mg/L
37%
Hardness (as CaCO3)49.2 mg/LNo legal limit–

49mg 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 Nidd from Oak Beck to Low Bridge on Briggate (Knaresborough), rated moderate

The Environment Agency rated the Nidd from Oak Beck to Low Bridge on Briggate (Knaresborough) 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, water plants and algae 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

22

forever-chemical detections in nearby rivers and groundwater

At 1 site. The highest was PFOS (total) at 0.023 µg/L, at SSN0869 Rossaw Beck Near Healthwaite Hill, 7.7 km away, in December 2025. These are river and borehole samples, not tests of your tap water.

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

HG1 in short

Tap water in HG1 (North Yorkshire) is supplied by Yorkshire Water in the North Yorkshire Central zone and scores 9.5 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.

  • 5th cleanest of 28 areas tested in North YorkshireOnly 4 areas in North Yorkshire scored higher. The best is BD24 on 9.7.
  • Soft water at 49 mg/LLimescale is not a problem in HG1, so skip softeners and scale filters entirely. How hardness is measured
  • PFAS found at 1 monitoring site within 10 kmThose are river and groundwater samples, not tap water. The highest was PFOS (total) about 7.7 km away. What was measured

Next door

YO79.5 out of 10 · 250 mg/LDL68.9 out of 10 · 249 mg/LDL78.9 out of 10 · 258 mg/LYO88.8 out of 10 · 277 mg/LYO119.4 out of 10 · 198 mg/LYO129.4 out of 10 · 199 mg/LYO139.2 out of 10 · 196 mg/LYO149.4 out of 10 · 238 mg/LDL109.4 out of 10 · 213 mg/LYO179.3 out of 10 · 295 mg/L

Questions about HG1 water

Is HG1 tap water safe to drink?

Based on the latest tests, HG1 (North Yorkshire) water scores 9.5/10, which is safe. 0 of 25 tested contaminants exceeded recommended levels. Water is supplied by Yorkshire Water.

What contaminants are in HG1 water?

We tested 25 contaminants in HG1 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 HG1?

HG1 (North Yorkshire) is supplied by Yorkshire Water. You can view their full profile and compliance data on our supplier page.

Is HG1 water hard or soft?

Water in HG1 (North Yorkshire) has a hardness of 49 mg/L CaCO3, which is classified as soft. Soft water is gentle on appliances and skin.

Should I use a water filter in HG1?

HG1 water scored 9.5/10 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 HG1 water?

The tap-water tests we hold for HG1 do not include a PFAS result. Environment Agency monitoring found PFAS in 22 river and groundwater samples from 1 sites within 10 km of HG1, the highest being PFOS (total) at 0.023 µg/L about 7.7 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 HG1?

The Environment Agency rated the Nidd from Oak Beck to Low Bridge on Briggate (Knaresborough) 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, water plants and algae 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 HG1, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near HG1

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
pH7.61 pHNone
Temperature14.9 °CNone
Conductivity268 µS/cmNone
Nitrate2.4 mg/L50 mg/L
Nitrite0.017 mg/L0.5 mg/L
Phosphate0.083 mg/LNone
Dissolved Oxygen9.67 mg/LNone
Ammonia0.35 mg/L0.5 mg/L
Hardness (as CaCO3)210 mg/LNone
Copper0.00191 mg/L2 mg/L
Zinc0.021 mg/LNone

Get alerts for your area

We'll email you when water quality data changes for HG1.

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