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tapwater
England and Wales average 9.0

Tap water in NG15, AshfieldSafe to drink.Very hard.

Supplied by Severn Trent. 374 samples, 22 substances, latest on 17 December 2025. Everything is inside the legal limit, and nothing comes close to it.

Get softener quotes for NG15See everything that was tested

8.9 / 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 341 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 NG15 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.

Fluoride came closest to a limit, at 51% of it. 16 of 19 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 0.00002 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Nitrite: 0.003 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Selenium: 0.00034 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Lead: 0.00014 mg/L, 1% of the 0.01 mg/L limitLead1%Copper: 0.0289 mg/L, 1% of the 2 mg/L limitCopper1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Antimony: 0.00009 mg/L, 2% of the 0.005 mg/L limitAntimony2%Mercury: 0.000022 mg/L, 2% of the 0.001 mg/L limitMercury2%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Boron: 0.03 mg/L, 3% of the 1 mg/L limitBoron3%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Iron: 0.0107 mg/L, 5% of the 0.2 mg/L limitIron5%Nickel: 0.0013 mg/L, 7% of the 0.02 mg/L limitNickel7%Arsenic: 0.00103 mg/L, 10% of the 0.01 mg/L limitArsenic10%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Trihalomethanes: 0.0382 mg/L, 38% of the 0.1 mg/L limitTrihalomethanes38%Nitrate: 21.8 mg/L, 44% of the 50 mg/L limitNitrate44%Fluoride: 0.77 mg/L, 51% of the 1.5 mg/L limitFluoride51%
  1. Fluoride51%
  2. Nitrate44%
  3. Trihalomethanes38%
  4. Aluminium11%
  5. Arsenic10%
  6. Nickel7%
  7. Iron5%
  8. Colour4%
  9. Turbidity3%
  10. Boron3%
  11. Mercury2%
  12. Antimony2%
  13. Manganese1%
  14. Copper1%
  15. Lead1%
  16. Selenium<1%
  17. Chromium<1%
  18. Nitrite<1%
  19. Cadmium<1%
  • pH 7.62 pH
  • Conductivity 581 µS/cm
  • Phosphate 1.02 mg/L
All 22 results as a table
SubstanceResultLegal limitShare of limit
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
Iron0.0107 mg/L0.2 mg/L
5%
Manganese0.00073 mg/L0.05 mg/L
1%
pH7.62 pHNo legal limit–
Aluminium0.021 mg/L0.2 mg/L
11%
Conductivity581 µS/cmNo legal limit–
Copper0.0289 mg/L2 mg/L
1%
Fluoride0.77 mg/L1.5 mg/L
51%
Trihalomethanes0.0382 mg/L0.1 mg/L
38%
Arsenic0.00103 mg/L0.01 mg/L
10%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Nitrate21.8 mg/L50 mg/L
44%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.0013 mg/L0.02 mg/L
7%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.00009 mg/L0.005 mg/L
2%
Selenium0.00034 mg/L0.04 mg/L
<1%
Nitrite0.003 mg/L0.5 mg/L
<1%
Mercury0.000022 mg/L0.001 mg/L
2%
Boron0.03 mg/L1 mg/L
3%
Phosphate1.02 mg/LNo legal limit–

341mg of limescale minerals in every litre, typical for the NG area. NG15 has no reading of its own.

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

Softener quotes for NG15

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Outside your tap

Your river is the Baker Lane Brook Catchment (trib of Leen), rated poor

The Environment Agency rated the Baker Lane Brook Catchment (trib of Leen) 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 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

68

forever-chemical detections in nearby rivers and groundwater

At 7 sites. The highest was PFHxS (linear) at 0.032 µg/L, at Bulwell Hall Brook Lake Downstream of Rolls Royce at Hucknall, 3.0 km away, in May 2024. These are river and borehole samples, not tests of your tap water.

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

NG15 in short

Tap water in NG15 (Ashfield) is supplied by Severn Trent in the Ashfield Central zone and scores 8.9 out of 10, against an England and Wales average of 9.0. None of the 22 tested substances came close to a limit. The latest sample is from 17 December 2025.

  • Among the hardest water in the country at 341 mg/LVery hard starts at 250 mg/L. At this level kettles scale up within weeks and a softener is a normal purchase across the NG postcode area. How hardness is measured
  • Fluoride is the reading closest to its limit, at 51% of the 1.5 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • PFAS found at 7 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFHxS (linear) about 3 km away. What was measured

Next door

NG178.7 out of 10 · 341 mg/LNG69.1 out of 10 · 341 mg/L

Questions about NG15 water

Is NG15 tap water safe to drink?

Based on the latest tests, NG15 (Ashfield) water scores 8.9/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Severn Trent.

What contaminants are in NG15 water?

We tested 22 contaminants in NG15 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 NG15?

NG15 (Ashfield) is supplied by Severn Trent. You can view their full profile and compliance data on our supplier page.

Is NG15 water hard or soft?

No hardness reading has been published for NG15 itself. Across the NG postcode area the typical value is 341 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 NG15?

NG15 water scored 8.9/10 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 NG15 water?

The tap-water tests we hold for NG15 do not include a PFAS result. Environment Agency monitoring found PFAS in 68 river and groundwater samples from 7 sites within 10 km of NG15, the highest being PFHxS (linear) at 0.032 µg/L about 3 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 NG15?

The Environment Agency rated the Baker Lane Brook Catchment (trib of Leen) 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 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 NG15, 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 NG15

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
Temperature15.5 °CNone
Conductivity454 µS/cmNone
Ammonia0.088 mg/L0.5 mg/L
Aluminium0.038 mg/L0.2 mg/L
Zinc0.006 mg/LNone
Nickel0.0015 mg/L0.02 mg/L
Dissolved Oxygen8.62 mg/LNone
Nitrate0.22 mg/L50 mg/L
Nitrite0.011 mg/L0.5 mg/L
Chromium0.0016 mg/L0.05 mg/L
Copper0.0038 mg/L2 mg/L
Phosphate0.061 mg/LNone
Hardness (as CaCO3)371 mg/LNone

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Source: Severn Trent 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