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tapwater
England and Wales average 9.0

Tap water in LL30, ConwyIron is over the limit.

Supplied by Dŵr Cymru Welsh Water. 602 samples, 22 substances, latest on 20 December 2024. Iron came in above the legal limit. Everything else passed.

See the filter we recommendSee everything that was tested

9.1 / 10

The tank is as full as the score.

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What's in a glass of LL30 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.

Iron is over its legal limit, at 140% of it.

0%25%50%75%limitLegal limitChromium: 0.0002 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%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%Fluoride: 0.11 mg/L, 7% of the 1.5 mg/L limitFluoride7%Nickel: 0.0021 mg/L, 11% of the 0.02 mg/L limitNickel11%Nitrite: 0.056 mg/L, 11% of the 0.5 mg/L limitNitrite11%Aluminium: 0.027 mg/L, 13% of the 0.2 mg/L limitAluminium13%Turbidity: 0.76 NTU, 19% of the 4 NTU limitTurbidity19%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Manganese: 0.018 mg/L, 36% of the 0.05 mg/L limitManganese36%Trihalomethanes: 0.044 mg/L, 44% of the 0.1 mg/L limitTrihalomethanes44%Iron: 0.28 mg/L, 140% of the 0.2 mg/L limitIron140%
  1. Iron140%
  2. Trihalomethanes44%
  3. Manganese36%
  4. Colour23%
  5. Turbidity19%
  6. Aluminium13%
  7. Nitrite11%
  8. Nickel11%
  9. Fluoride7%
  10. Nitrate5%
  11. Mercury4%
  12. Copper3%
  13. Boron3%
  14. Lead2%
  15. Arsenic1%
  16. Selenium<1%
  17. Antimony<1%
  18. Cadmium<1%
  19. Chromium<1%
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 85 µS/cm
All 22 results as a table
SubstanceResultLegal limitShare of limit
Iron0.28 mg/L0.2 mg/L
140%
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Antimony0.000028 mg/L0.005 mg/L
<1%
Lead0.00016 mg/L0.01 mg/L
2%
Mercury0.000042 mg/L0.001 mg/L
4%
Chromium0.0002 mg/L0.05 mg/L
<1%
Selenium0.00023 mg/L0.04 mg/L
<1%
Nickel0.0021 mg/L0.02 mg/L
11%
Copper0.058 mg/L2 mg/L
3%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Fluoride0.11 mg/L1.5 mg/L
7%
Arsenic0.00011 mg/L0.01 mg/L
1%
Manganese0.018 mg/L0.05 mg/L
36%
Nitrite0.056 mg/L0.5 mg/L
11%
Nitrate2.61 mg/L50 mg/L
5%
Aluminium0.027 mg/L0.2 mg/L
13%
Turbidity0.76 NTU4 NTU
19%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Conductivity85 µS/cmNo legal limit–
Trihalomethanes0.044 mg/L0.1 mg/L
44%
Boron0.028 mg/L1 mg/L
3%

LL30 in short

Tap water in LL30 (Conwy) is supplied by Dŵr Cymru Welsh Water in the Conwy Central zone and scores 9.1 out of 10, against an England and Wales average of 9.0. 1 of 22 tested substances was close to or over a limit. The latest sample is from 20 December 2024.

  • Iron was measured at 0.28 mg/L, 40% over the UK limitIt is the only one of 22 tested substances to go over its limit. See the full results
  • 11th cleanest of 12 areas tested in Conwy1 area in Conwy scored lower. The best is LL32 on 9.7.
  • 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

LL229.6 out of 10LL249.2 out of 10LL339.6 out of 10LL279.2 out of 10LL289.5 out of 10LL319.1 out of 10LL349.6 out of 10LL299.5 out of 10LL329.7 out of 10LL269.6 out of 10

Questions about LL30 water

Is LL30 tap water safe to drink?

Based on the latest tests, LL30 (Conwy) water scores 9.1/10, which is safe. 1 of 22 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in LL30 water?

We tested 22 contaminants in LL30 water. 1 were flagged, including Iron.

Who supplies water in LL30?

LL30 (Conwy) 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 LL30?

With 1 contaminant above recommended levels in LL30, a water filter could help. A filter jug or under-sink filter can reduce most common contaminants. See our filter recommendations for your area.

Are there PFAS forever chemicals in LL30 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for LL30, 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