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tapwater
England and Wales average 9.0

Tap water in LL15, DenbighshireSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 637 samples, 22 substances, latest on 19 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.3 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of LL15 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 60% of it. 18 of 19 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.00011 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%Antimony: 0.000028 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Selenium: 0.00023 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Arsenic: 0.00011 mg/L, 1% of the 0.01 mg/L limitArsenic1%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%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%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%Manganese: 0.0038 mg/L, 8% of the 0.05 mg/L limitManganese8%Iron: 0.021 mg/L, 11% of the 0.2 mg/L limitIron11%Nitrite: 0.056 mg/L, 11% of the 0.5 mg/L limitNitrite11%Aluminium: 0.028 mg/L, 14% of the 0.2 mg/L limitAluminium14%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Trihalomethanes: 0.06 mg/L, 60% of the 0.1 mg/L limitTrihalomethanes60%
  1. Trihalomethanes60%
  2. Colour23%
  3. Aluminium14%
  4. Nitrite11%
  5. Iron11%
  6. Manganese8%
  7. Fluoride7%
  8. Turbidity7%
  9. Nitrate5%
  10. Mercury4%
  11. Nickel3%
  12. Copper3%
  13. Boron3%
  14. Lead2%
  15. Arsenic1%
  16. Selenium<1%
  17. Antimony<1%
  18. Cadmium<1%
  19. Chromium<1%
  • E. coli none found
  • Coliform Bacteria none found
  • Conductivity 170 µS/cm
All 22 results as a table
SubstanceResultLegal limitShare of limit
E. coli0 count/100mlMust be zeroNone found
Coliform Bacteria0 count/100mlMust be zeroNone found
Boron0.028 mg/L1 mg/L
3%
Trihalomethanes0.06 mg/L0.1 mg/L
60%
Conductivity170 µS/cmNo legal limit–
Lead0.00016 mg/L0.01 mg/L
2%
Mercury0.000042 mg/L0.001 mg/L
4%
Selenium0.00023 mg/L0.04 mg/L
<1%
Antimony0.000028 mg/L0.005 mg/L
<1%
Nickel0.00059 mg/L0.02 mg/L
3%
Chromium0.00011 mg/L0.05 mg/L
<1%
Arsenic0.00011 mg/L0.01 mg/L
1%
Iron0.021 mg/L0.2 mg/L
11%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Fluoride0.11 mg/L1.5 mg/L
7%
Copper0.058 mg/L2 mg/L
3%
Manganese0.0038 mg/L0.05 mg/L
8%
Nitrite0.056 mg/L0.5 mg/L
11%
Nitrate2.61 mg/L50 mg/L
5%
Aluminium0.028 mg/L0.2 mg/L
14%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Turbidity0.27 NTU4 NTU
7%

LL15 in short

Tap water in LL15 (Denbighshire) is supplied by Dŵr Cymru Welsh Water in the Denbighshire Central zone and scores 9.3 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 19 December 2024.

  • Trihalomethanes is the reading closest to its limit, at 60% of the 0.1 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 5th cleanest of 7 areas tested in Denbighshire2 areas in Denbighshire scored lower. The best is LL19 on 9.5.
  • Scores higher than 2 of 6 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

LL169.1 out of 10LL179.4 out of 10LL189.0 out of 10LL199.5 out of 10LL209.5 out of 10LL219.4 out of 10

Questions about LL15 water

Is LL15 tap water safe to drink?

Based on the latest tests, LL15 (Denbighshire) water scores 9.3/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in LL15 water?

We tested 22 contaminants in LL15 water. None exceeded recommended safe levels.

Who supplies water in LL15?

LL15 (Denbighshire) 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 LL15?

LL15 water scored 9.3/10 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 LL15 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for LL15, 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

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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