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England and Wales average 9.0

Tap water in NP23, Blaenau GwentSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 1,163 samples, 23 substances, latest on 17 December 2024. Everything is inside the legal limit, and nothing comes close to it.

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9.5 / 10

The tank is as full as the score.

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What's in a glass of NP23 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 24% of it. 20 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.00015 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%Arsenic: 0.00012 mg/L, 1% of the 0.01 mg/L limitArsenic1%Manganese: 0.00068 mg/L, 1% of the 0.05 mg/L limitManganese1%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%Antimony: 0.000083 mg/L, 2% of the 0.005 mg/L limitAntimony2%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%Mercury: 0.000042 mg/L, 4% of the 0.001 mg/L limitMercury4%Bromate: 0.00046 mg/L, 5% of the 0.01 mg/L limitBromate5%Nitrate: 2.61 mg/L, 5% of the 50 mg/L limitNitrate5%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Fluoride: 0.11 mg/L, 7% of the 1.5 mg/L limitFluoride7%Copper: 0.16 mg/L, 8% of the 2 mg/L limitCopper8%Nickel: 0.0017 mg/L, 9% of the 0.02 mg/L limitNickel9%Iron: 0.019 mg/L, 9% of the 0.2 mg/L limitIron9%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Trihalomethanes: 0.024 mg/L, 24% of the 0.1 mg/L limitTrihalomethanes24%
  1. Trihalomethanes24%
  2. Colour23%
  3. Iron9%
  4. Nickel9%
  5. Copper8%
  6. Fluoride7%
  7. Turbidity7%
  8. Nitrate5%
  9. Bromate5%
  10. Mercury4%
  11. Boron3%
  12. Nitrite3%
  13. Aluminium3%
  14. Antimony2%
  15. Lead2%
  16. Manganese1%
  17. Arsenic1%
  18. Selenium<1%
  19. Cadmium<1%
  20. Chromium<1%
  • Conductivity 130 µS/cm
  • E. coli none found
  • Coliform Bacteria none found
All 23 results as a table
SubstanceResultLegal limitShare of limit
Conductivity130 µS/cmNo legal limit–
Iron0.019 mg/L0.2 mg/L
9%
E. coli0 count/100mlMust be zeroNone found
Manganese0.00068 mg/L0.05 mg/L
1%
Coliform Bacteria0 count/100mlMust be zeroNone found
Bromate0.00046 mg/L0.01 mg/L
5%
Boron0.028 mg/L1 mg/L
3%
Trihalomethanes0.024 mg/L0.1 mg/L
24%
Nickel0.0017 mg/L0.02 mg/L
9%
Mercury0.000042 mg/L0.001 mg/L
4%
Chromium0.00015 mg/L0.05 mg/L
<1%
Antimony0.000083 mg/L0.005 mg/L
2%
Selenium0.00023 mg/L0.04 mg/L
<1%
Lead0.00016 mg/L0.01 mg/L
2%
Copper0.16 mg/L2 mg/L
8%
Arsenic0.00012 mg/L0.01 mg/L
1%
Fluoride0.11 mg/L1.5 mg/L
7%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Nitrite0.013 mg/L0.5 mg/L
3%
Aluminium0.005 mg/L0.2 mg/L
3%
Nitrate2.61 mg/L50 mg/L
5%
Turbidity0.27 NTU4 NTU
7%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%

NP23 in short

Tap water in NP23 (Blaenau Gwent) is supplied by Dŵr Cymru Welsh Water in the Blaenau Gwent Central zone and scores 9.5 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 17 December 2024.

  • The lowest score of the 3 areas tested in Blaenau GwentNP23 scores 9.5 out of 10. The best in Blaenau Gwent, NP13, scores 9.6.
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 24% of the 0.1 mg/L maximum. See every reading
  • Right on the national average of 9 out of 10Most of the country's tested districts land within half a point of NP23. Compare every area

Next door

NP139.6 out of 10NP229.5 out of 10

Questions about NP23 water

Is NP23 tap water safe to drink?

Based on the latest tests, NP23 (Blaenau Gwent) water scores 9.5/10, which is safe. 0 of 23 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in NP23 water?

We tested 23 contaminants in NP23 water. None exceeded recommended safe levels.

Who supplies water in NP23?

NP23 (Blaenau Gwent) 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 NP23?

NP23 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 NP23 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for NP23, 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.

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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