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tapwater
England and Wales average 9.0

Tap water in NP26, MonmouthshireSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 593 samples, 23 substances, latest on 20 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.

What to do about it

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What's in a glass of NP26 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 52% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.00013 mg/L, <1% of the 0.05 mg/L limitChromium<1%Cadmium: 0.000025 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Selenium: 0.00023 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Antimony: 0.000051 mg/L, 1% of the 0.005 mg/L limitAntimony1%Manganese: 0.00068 mg/L, 1% of the 0.05 mg/L limitManganese1%Arsenic: 0.00014 mg/L, 1% of the 0.01 mg/L limitArsenic1%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%Iron: 0.004 mg/L, 2% of the 0.2 mg/L limitIron2%Aluminium: 0.005 mg/L, 3% of the 0.2 mg/L limitAluminium3%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Boron: 0.028 mg/L, 3% of the 1 mg/L limitBoron3%Copper: 0.058 mg/L, 3% of the 2 mg/L limitCopper3%Nickel: 0.00059 mg/L, 3% of the 0.02 mg/L limitNickel3%Mercury: 0.000042 mg/L, 4% of the 0.001 mg/L limitMercury4%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Fluoride: 0.11 mg/L, 7% of the 1.5 mg/L limitFluoride7%Bromate: 0.00084 mg/L, 8% of the 0.01 mg/L limitBromate8%Nitrate: 7.13 mg/L, 14% of the 50 mg/L limitNitrate14%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Trihalomethanes: 0.052 mg/L, 52% of the 0.1 mg/L limitTrihalomethanes52%
  1. Trihalomethanes52%
  2. Colour23%
  3. Nitrate14%
  4. Bromate8%
  5. Fluoride7%
  6. Turbidity7%
  7. Mercury4%
  8. Nickel3%
  9. Copper3%
  10. Boron3%
  11. Nitrite3%
  12. Aluminium3%
  13. Iron2%
  14. Lead2%
  15. Arsenic1%
  16. Manganese1%
  17. Antimony1%
  18. Selenium<1%
  19. Cadmium<1%
  20. Chromium<1%
  • E. coli none found
  • Coliform Bacteria none found
  • Conductivity 330 µS/cm
All 23 results as a table
SubstanceResultLegal limitShare of limit
E. coli0 count/100mlMust be zeroNone found
Coliform Bacteria0 count/100mlMust be zeroNone found
Conductivity330 µS/cmNo legal limit–
Turbidity0.27 NTU4 NTU
7%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Iron0.004 mg/L0.2 mg/L
2%
Manganese0.00068 mg/L0.05 mg/L
1%
Aluminium0.005 mg/L0.2 mg/L
3%
Bromate0.00084 mg/L0.01 mg/L
8%
Trihalomethanes0.052 mg/L0.1 mg/L
52%
Boron0.028 mg/L1 mg/L
3%
Selenium0.00023 mg/L0.04 mg/L
<1%
Lead0.00016 mg/L0.01 mg/L
2%
Antimony0.000051 mg/L0.005 mg/L
1%
Nickel0.00059 mg/L0.02 mg/L
3%
Chromium0.00013 mg/L0.05 mg/L
<1%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Mercury0.000042 mg/L0.001 mg/L
4%
Arsenic0.00014 mg/L0.01 mg/L
1%
Fluoride0.11 mg/L1.5 mg/L
7%
Nitrite0.013 mg/L0.5 mg/L
3%
Copper0.058 mg/L2 mg/L
3%
Nitrate7.13 mg/L50 mg/L
14%

NP26 in short

Tap water in NP26 (Monmouthshire) is supplied by Dŵr Cymru Welsh Water in the Monmouthshire Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 23 tested substances came close to a limit. The latest sample is from 20 December 2024.

  • Trihalomethanes is the reading closest to its limit, at 52% of the 0.1 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 4th cleanest of 5 areas tested in Monmouthshire1 area in Monmouthshire scored lower. The best is NP7 on 9.6.
  • Scores higher than 1 of 4 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

NP79.6 out of 10NP159.4 out of 10NP169.5 out of 10NP259.1 out of 10

Questions about NP26 water

Is NP26 tap water safe to drink?

Based on the latest tests, NP26 (Monmouthshire) water scores 9.4/10, which is safe. 0 of 23 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in NP26 water?

We tested 23 contaminants in NP26 water. None exceeded recommended safe levels.

Who supplies water in NP26?

NP26 (Monmouthshire) is supplied by Dŵr Cymru Welsh Water. You can view their full profile and compliance data on our supplier page.

Should I use a water filter in NP26?

NP26 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 NP26 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for NP26, 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.

Keep reading

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

River and groundwater readings near NP26

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
Iron1.03 mg/L0.2 mg/L
pH8.08 pHNone
Temperature6.2 °CNone
Conductivity969 µS/cmNone
Nitrate5.19 mg/L50 mg/L
Nitrite0.033 mg/L0.5 mg/L
Phosphate0.683 mg/LNone
Dissolved Oxygen11.6 mg/LNone
Ammonia0.117 mg/L0.5 mg/L
Boron0.221 mg/L1 mg/L
Chromium0.013 mg/L0.05 mg/L
Zinc0.00978 mg/LNone
Nickel0.0011 mg/L0.02 mg/L
Copper0.00223 mg/L2 mg/L
Lead0.0064 mg/L0.01 mg/L
Cadmium0.00039 mg/L0.005 mg/L

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Source: Dŵr Cymru Welsh 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