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tapwater
England and Wales average 9.0

Tap water in LL12, WrexhamSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 890 samples, 18 substances, latest on 23 December 2025. 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 LL12 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 30% of it. 15 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.0036 mg/L, <1% of the 2 mg/L limitCopper<1%Cadmium: 0.00001 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Selenium: 0.00009 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Nitrite: 0.003 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Antimony: 0.000067 mg/L, 1% of the 0.005 mg/L limitAntimony1%Arsenic: 0.00014 mg/L, 1% of the 0.01 mg/L limitArsenic1%Lead: 0.00014 mg/L, 1% of the 0.01 mg/L limitLead1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Nickel: 0.001 mg/L, 5% of the 0.02 mg/L limitNickel5%Iron: 0.0157 mg/L, 8% of the 0.2 mg/L limitIron8%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 6.4 mg/L, 13% of the 50 mg/L limitNitrate13%Trihalomethanes: 0.0298 mg/L, 30% of the 0.1 mg/L limitTrihalomethanes30%
  1. Trihalomethanes30%
  2. Nitrate13%
  3. Aluminium11%
  4. Iron8%
  5. Nickel5%
  6. Colour4%
  7. Turbidity3%
  8. Manganese1%
  9. Arsenic1%
  10. Lead1%
  11. Antimony1%
  12. Chromium<1%
  13. Nitrite<1%
  14. Selenium<1%
  15. Cadmium<1%
  16. Copper<1%
  • pH 7.25 pH
  • Phosphate 1.02 mg/L
All 18 results as a table
SubstanceResultLegal limitShare of limit
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
pH7.25 pHNo legal limit–
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.0157 mg/L0.2 mg/L
8%
Manganese0.00073 mg/L0.05 mg/L
1%
Copper0.0036 mg/L2 mg/L
<1%
Nitrate6.4 mg/L50 mg/L
13%
Nitrite0.003 mg/L0.5 mg/L
<1%
Selenium0.00009 mg/L0.04 mg/L
<1%
Arsenic0.00014 mg/L0.01 mg/L
1%
Cadmium0.00001 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00014 mg/L0.01 mg/L
1%
Antimony0.000067 mg/L0.005 mg/L
1%
Trihalomethanes0.0298 mg/L0.1 mg/L
30%
Phosphate1.02 mg/LNo legal limit–

LL12 in short

Tap water in LL12 (Wrexham) is supplied by Dŵr Cymru Welsh Water in the Wrexham Central zone and scores 9.5 out of 10, against an England and Wales average of 9.0. None of the 18 tested substances came close to a limit. The latest sample is from 23 December 2025.

  • 3rd cleanest of 4 areas tested in Wrexham1 area in Wrexham scored lower. The best is LL13 on 9.6.
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 30% of the 0.1 mg/L maximum. See every reading
  • Scores higher than 1 of 3 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

LL139.6 out of 10LL149.6 out of 10LL119.4 out of 10

Questions about LL12 water

Is LL12 tap water safe to drink?

Based on the latest tests, LL12 (Wrexham) water scores 9.5/10, which is safe. 0 of 18 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in LL12 water?

We tested 18 contaminants in LL12 water. None exceeded recommended safe levels.

Who supplies water in LL12?

LL12 (Wrexham) 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 LL12?

LL12 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 LL12 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for LL12, 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 LL12

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
Ammonia33 mg/L0.5 mg/L
pH7.89 pHNone
Temperature18.2 °CNone
Conductivity1625 µS/cmNone
Phosphate5.9 mg/LNone
Dissolved Oxygen0.272 mg/LNone
Nitrate0.192 mg/L50 mg/L
Nitrite0.0079 mg/L0.5 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