Tap water in LL76, Isle of AngleseySafe to drink.
Supplied by Dŵr Cymru Welsh Water. 282 samples, 23 substances, latest on 14 November 2024. Everything is inside the legal limit, and nothing comes close to it.
9.4 / 10
The tank is as full as the score.
What to do about it

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BRITA Marella XL + MAXTRA PRO
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What's in a glass of LL76 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 37% of it. 19 of 20 substances used under a quarter of theirs.
- Trihalomethanes37%
- Colour23%
- Nitrite19%
- Nitrate9%
- Aluminium8%
- Fluoride7%
- Turbidity7%
- Bromate5%
- Mercury4%
- Nickel3%
- Copper3%
- Iron3%
- Boron3%
- Arsenic2%
- Manganese2%
- Lead2%
- Antimony1%
- Chromium<1%
- Selenium<1%
- Cadmium<1%
- Conductivity 290 µS/cm
- Coliform Bacteria none found
- E. coli none found
All 23 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| Turbidity | 0.27 NTU | 4 NTU | 7% |
| Colour | 4.6 mg/L Pt/Co | 20 mg/L Pt/Co | 23% |
| Conductivity | 290 µS/cm | No legal limit | – |
| Coliform Bacteria | 0 count/100ml | Must be zero | None found |
| E. coli | 0 count/100ml | Must be zero | None found |
| Manganese | 0.00089 mg/L | 0.05 mg/L | 2% |
| Aluminium | 0.015 mg/L | 0.2 mg/L | 8% |
| Iron | 0.0057 mg/L | 0.2 mg/L | 3% |
| Trihalomethanes | 0.037 mg/L | 0.1 mg/L | 37% |
| Boron | 0.028 mg/L | 1 mg/L | 3% |
| Bromate | 0.00046 mg/L | 0.01 mg/L | 5% |
| Antimony | 0.00005 mg/L | 0.005 mg/L | 1% |
| Chromium | 0.00029 mg/L | 0.05 mg/L | <1% |
| Selenium | 0.00023 mg/L | 0.04 mg/L | <1% |
| Lead | 0.00016 mg/L | 0.01 mg/L | 2% |
| Nickel | 0.00059 mg/L | 0.02 mg/L | 3% |
| Mercury | 0.000042 mg/L | 0.001 mg/L | 4% |
| Fluoride | 0.11 mg/L | 1.5 mg/L | 7% |
| Arsenic | 0.00023 mg/L | 0.01 mg/L | 2% |
| Cadmium | 0.000025 mg/L | 0.005 mg/L | <1% |
| Copper | 0.058 mg/L | 2 mg/L | 3% |
| Nitrite | 0.096 mg/L | 0.5 mg/L | 19% |
| Nitrate | 4.6 mg/L | 50 mg/L | 9% |
LL76 in short
Tap water in LL76 (Isle of Anglesey) is supplied by Dŵr Cymru Welsh Water in the Isle of Anglesey Central zone and scores 9.4 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 14 November 2024.
- 19th cleanest of 21 areas tested in Isle of Anglesey2 areas in Isle of Anglesey scored lower. The best is LL58 on 9.6.
- Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 37% of the 0.1 mg/L maximum. See every reading
- Scores higher than 1 of 10 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.
Questions about LL76 water
Is LL76 tap water safe to drink?
Based on the latest tests, LL76 (Isle of Anglesey) water scores 9.4/10, which is safe. 0 of 23 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.
What contaminants are in LL76 water?
We tested 23 contaminants in LL76 water. None exceeded recommended safe levels.
Who supplies water in LL76?
LL76 (Isle of Anglesey) 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 LL76?
LL76 water scored 9.4/10 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 LL76 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for LL76, 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.
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