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tapwater
England and Wales average 9.0

Tap water in LL53, GwyneddSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 684 samples, 23 substances, latest on 31 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.5 / 10

The tank is as full as the score.

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What's in a glass of LL53 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 38% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitBromate: 3.1e-7 mg/L, <1% of the 0.01 mg/L limitBromate<1%Chromium: 0.000097 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%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%Boron: 0.028 mg/L, 3% of the 1 mg/L limitBoron3%Copper: 0.058 mg/L, 3% of the 2 mg/L limitCopper3%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%Aluminium: 0.017 mg/L, 9% of the 0.2 mg/L limitAluminium9%Iron: 0.02 mg/L, 10% of the 0.2 mg/L limitIron10%Nitrite: 0.056 mg/L, 11% of the 0.5 mg/L limitNitrite11%Nickel: 0.0026 mg/L, 13% of the 0.02 mg/L limitNickel13%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Trihalomethanes: 0.038 mg/L, 38% of the 0.1 mg/L limitTrihalomethanes38%
  1. Trihalomethanes38%
  2. Colour23%
  3. Nickel13%
  4. Nitrite11%
  5. Iron10%
  6. Aluminium9%
  7. Fluoride7%
  8. Turbidity7%
  9. Nitrate5%
  10. Mercury4%
  11. Copper3%
  12. Boron3%
  13. Lead2%
  14. Arsenic1%
  15. Manganese1%
  16. Selenium<1%
  17. Antimony<1%
  18. Cadmium<1%
  19. Chromium<1%
  20. Bromate<1%
  • E. coli none found
  • Coliform Bacteria none found
  • Conductivity 97 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
Trihalomethanes0.038 mg/L0.1 mg/L
38%
Bromate3.1e-7 mg/L0.01 mg/L
<1%
Conductivity97 µS/cmNo legal limit–
Manganese0.00068 mg/L0.05 mg/L
1%
Iron0.02 mg/L0.2 mg/L
10%
Aluminium0.017 mg/L0.2 mg/L
9%
Turbidity0.27 NTU4 NTU
7%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Boron0.028 mg/L1 mg/L
3%
Mercury0.000042 mg/L0.001 mg/L
4%
Nickel0.0026 mg/L0.02 mg/L
13%
Lead0.00016 mg/L0.01 mg/L
2%
Selenium0.00023 mg/L0.04 mg/L
<1%
Antimony0.000028 mg/L0.005 mg/L
<1%
Chromium0.000097 mg/L0.05 mg/L
<1%
Arsenic0.00014 mg/L0.01 mg/L
1%
Fluoride0.11 mg/L1.5 mg/L
7%
Copper0.058 mg/L2 mg/L
3%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Nitrite0.056 mg/L0.5 mg/L
11%
Nitrate2.61 mg/L50 mg/L
5%

LL53 in short

Tap water in LL53 (Gwynedd) is supplied by Dŵr Cymru Welsh Water in the Gwynedd 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 31 December 2024.

  • The lowest score of the 23 areas tested in GwyneddLL53 scores 9.5 out of 10. The best in Gwynedd, LL35, scores 9.7.
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 38% of the 0.1 mg/L maximum. See every reading
  • Scores higher than 0 of 10 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

LL559.6 out of 10LL579.6 out of 10LL239.6 out of 10LL469.6 out of 10LL499.6 out of 10LL389.6 out of 10LL439.7 out of 10LL479.7 out of 10LL549.6 out of 10LL519.5 out of 10

Questions about LL53 water

Is LL53 tap water safe to drink?

Based on the latest tests, LL53 (Gwynedd) 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 LL53 water?

We tested 23 contaminants in LL53 water. None exceeded recommended safe levels.

Who supplies water in LL53?

LL53 (Gwynedd) 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 LL53?

LL53 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 LL53 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for LL53, 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