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tapwater
England and Wales average 9.0

Tap water in LL13, WrexhamSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 1,252 samples, 18 substances, latest on 19 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.6 / 10

The tank is as full as the score.

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What's in a glass of LL13 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 18% of it. 16 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.002 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: 0.000066 mg/L, 1% of the 0.005 mg/L limitAntimony1%Lead: 0.00014 mg/L, 1% of the 0.01 mg/L limitLead1%Arsenic: 0.00014 mg/L, 1% of the 0.01 mg/L limitArsenic1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%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%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 5.8 mg/L, 12% of the 50 mg/L limitNitrate12%Trihalomethanes: 0.0181 mg/L, 18% of the 0.1 mg/L limitTrihalomethanes18%
  1. Trihalomethanes18%
  2. Nitrate12%
  3. Aluminium11%
  4. Nickel5%
  5. Colour4%
  6. Iron3%
  7. Turbidity3%
  8. Manganese1%
  9. Lead1%
  10. Arsenic1%
  11. Antimony1%
  12. Chromium<1%
  13. Nitrite<1%
  14. Selenium<1%
  15. Cadmium<1%
  16. Copper<1%
  • pH 7.34 pH
  • Phosphate 1.04 mg/L
All 18 results as a table
SubstanceResultLegal limitShare of limit
Turbidity0.12 NTU4 NTU
3%
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%
Antimony0.000066 mg/L0.005 mg/L
1%
Selenium0.00009 mg/L0.04 mg/L
<1%
Manganese0.00073 mg/L0.05 mg/L
1%
Nitrate5.8 mg/L50 mg/L
12%
Nitrite0.003 mg/L0.5 mg/L
<1%
Aluminium0.021 mg/L0.2 mg/L
11%
Copper0.002 mg/L2 mg/L
<1%
Iron0.007 mg/L0.2 mg/L
3%
Arsenic0.00014 mg/L0.01 mg/L
1%
pH7.34 pHNo legal limit–
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Trihalomethanes0.0181 mg/L0.1 mg/L
18%
Phosphate1.04 mg/LNo legal limit–

LL13 in short

Tap water in LL13 (Wrexham) is supplied by Dŵr Cymru Welsh Water in the Wrexham Central zone and scores 9.6 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 19 December 2025.

  • The cleanest tap water of the 4 areas tested in WrexhamLL13 scores 9.6 out of 10, ahead of LL14 in second place on 9.6.
  • 0.6 points above the national average of 9Cleaner than the typical tested district in the UK. Compare every area
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 18% of the 0.1 mg/L maximum. See every reading

Next door

LL129.5 out of 10LL149.6 out of 10LL119.4 out of 10

Questions about LL13 water

Is LL13 tap water safe to drink?

Based on the latest tests, LL13 (Wrexham) water scores 9.6/10, which is safe. 0 of 18 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in LL13 water?

We tested 18 contaminants in LL13 water. None exceeded recommended safe levels.

Who supplies water in LL13?

LL13 (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 LL13?

LL13 water scored 9.6/10 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 LL13 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for LL13, 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 LL13

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
Turbidity14 NTU4 NTU
pH7.8 pHNone
Temperature19 °CNone
Conductivity196 µS/cmNone
Nitrate1.2 mg/L50 mg/L
Nitrite0.014 mg/L0.5 mg/L
Dissolved Oxygen8.66 mg/LNone
Phosphate0.1 mg/LNone
Ammonia0.056 mg/L0.5 mg/L
Chromium0.00054 mg/L0.05 mg/L
Arsenic0.0015 mg/L0.01 mg/L
Copper0.0046 mg/L2 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