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tapwater
England and Wales average 9.0

Tap water in NN2, West NorthamptonshireSafe to drink.Slightly hard.

Supplied by Anglian Water. 1,140 samples, 19 substances, latest on 6 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.4 / 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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What's in a glass of NN2 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 19% of it. 16 of 16 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%Chromium: 0.00076 mg/L, 2% of the 0.05 mg/L limitChromium2%Selenium: 0.00072 mg/L, 2% of the 0.04 mg/L limitSelenium2%Lead: 0.00022 mg/L, 2% of the 0.01 mg/L limitLead2%Arsenic: 0.00029 mg/L, 3% of the 0.01 mg/L limitArsenic3%Antimony: 0.0002 mg/L, 4% of the 0.005 mg/L limitAntimony4%Copper: 0.11 mg/L, 6% of the 2 mg/L limitCopper6%Turbidity: 0.24 NTU, 6% of the 4 NTU limitTurbidity6%Nitrite: 0.03 mg/L, 6% of the 0.5 mg/L limitNitrite6%Aluminium: 0.012 mg/L, 6% of the 0.2 mg/L limitAluminium6%Manganese: 0.003 mg/L, 6% of the 0.05 mg/L limitManganese6%Nickel: 0.00235 mg/L, 12% of the 0.02 mg/L limitNickel12%Iron: 0.026 mg/L, 13% of the 0.2 mg/L limitIron13%Trihalomethanes: 0.0141 mg/L, 14% of the 0.1 mg/L limitTrihalomethanes14%Nitrate: 7.52 mg/L, 15% of the 50 mg/L limitNitrate15%Fluoride: 0.28 mg/L, 19% of the 1.5 mg/L limitFluoride19%
  1. Fluoride19%
  2. Nitrate15%
  3. Trihalomethanes14%
  4. Iron13%
  5. Nickel12%
  6. Turbidity6%
  7. Nitrite6%
  8. Aluminium6%
  9. Manganese6%
  10. Copper6%
  11. Antimony4%
  12. Arsenic3%
  13. Lead2%
  14. Selenium2%
  15. Chromium2%
  16. Cadmium<1%
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 334 µS/cm
All 19 results as a table
SubstanceResultLegal limitShare of limit
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Turbidity0.24 NTU4 NTU
6%
Nitrate7.52 mg/L50 mg/L
15%
Nitrite0.03 mg/L0.5 mg/L
6%
Aluminium0.012 mg/L0.2 mg/L
6%
Iron0.026 mg/L0.2 mg/L
13%
Manganese0.003 mg/L0.05 mg/L
6%
Conductivity334 µS/cmNo legal limit–
Copper0.11 mg/L2 mg/L
6%
Fluoride0.28 mg/L1.5 mg/L
19%
Arsenic0.00029 mg/L0.01 mg/L
3%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Chromium0.00076 mg/L0.05 mg/L
2%
Nickel0.00235 mg/L0.02 mg/L
12%
Lead0.00022 mg/L0.01 mg/L
2%
Antimony0.0002 mg/L0.005 mg/L
4%
Selenium0.00072 mg/L0.04 mg/L
2%
Trihalomethanes0.0141 mg/L0.1 mg/L
14%

175mg of limescale minerals in every litre

Middling hardness. Some scale, slowly

Below the point where a softener pays for itself. Descaling the kettle now and then is all most homes need.

Soft400 mg/L
Outside your tap

Your river is the Brampton Branch - Lower, rated poor

The Environment Agency rated the Brampton Branch - Lower 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, fish and dissolved oxygen. 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

91

forever-chemical detections in nearby rivers and groundwater

At 5 sites. The highest was 6:2 FTSA at 0.07 µg/L, at Billing Bk.lt.billing Rd.br.northampton, 5.1 km away, in August 2025. These are river and borehole samples, not tests of your tap water.

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

NN2 in short

Tap water in NN2 (West Northamptonshire) is supplied by Anglian Water in the West Northamptonshire Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 19 tested substances came close to a limit. The latest sample is from 6 December 2024.

  • 2nd cleanest of 12 areas tested in NorthamptonOnly 1 area in Northampton scored higher. The best is NN11 on 9.4. Every area in Northampton
  • PFAS found at 5 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was 6:2 FTSA about 5.1 km away. What was measured
  • Nothing tested came within 40% of its legal limitThe highest was Fluoride at 19% of the 1.5 mg/L maximum. See every reading

Next door

NN19.2 out of 10 · 239 mg/LNN79.3 out of 10 · 195 mg/LNN49.3 out of 10 · 262 mg/LNN59.4 out of 10 · 195 mg/LNN69.3 out of 10 · 166 mg/LNN119.4 out of 10 · 186 mg/LNN39.4 out of 10 · 250 mg/LNN139.2 out of 10 · 243 mg/LNN128.9 out of 10 · 243 mg/LOX179.1 out of 10 · 240 mg/L

Questions about NN2 water

Is NN2 tap water safe to drink?

Based on the latest tests, NN2 (West Northamptonshire) water scores 9.4/10, which is safe. 0 of 19 tested contaminants exceeded recommended levels. Water is supplied by Anglian Water.

What contaminants are in NN2 water?

We tested 19 contaminants in NN2 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 NN2?

NN2 (West Northamptonshire) is supplied by Anglian Water. You can view their full profile and compliance data on our supplier page.

Is NN2 water hard or soft?

Water in NN2 (West Northamptonshire) has a hardness of 175 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.

Should I use a water filter in NN2?

NN2 water scored 9.4/10 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 NN2 water?

The tap-water tests we hold for NN2 do not include a PFAS result. Environment Agency monitoring found PFAS in 91 river and groundwater samples from 5 sites within 10 km of NN2, the highest being 6:2 FTSA at 0.07 µg/L about 5.1 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 NN2?

The Environment Agency rated the Brampton Branch - Lower 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, fish and dissolved oxygen. 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 NN2, which is treated before it reaches homes.

Keep reading

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

River and groundwater readings near NN2

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
pH7.97 pHNone
Temperature16.9 °CNone
Conductivity415 µS/cmNone
Nitrate6.1 mg/L50 mg/L
Nitrite0.0097 mg/L0.5 mg/L
Phosphate0.059 mg/LNone
Dissolved Oxygen8.74 mg/LNone
Ammonia0.092 mg/L0.5 mg/L

Get alerts for your area

We'll email you when water quality data changes for NN2.

Source: Anglian 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