Tap water in SA70, PembrokeshireSafe to drink.
Supplied by Dŵr Cymru Welsh Water. 250 samples, 23 substances, latest on 13 December 2024. Everything is inside the legal limit. One result, iron, sits close to the line.
9.1 / 10
The tank is as full as the score.
What to do about it

Waterdrop G3P600 Reverse Osmosis
£550typical price
Maximum contaminant removal including PFAS and fluoride

Waterdrop 10UA Under Sink
£70typical price
High-volume under-sink filtration without RO complexity

Doulton HIP Ultracarb
£120typical price
Families wanting bacteria and lead removal from a trusted UK brand
We earn a commission if you buy through these links, at no extra cost to you. It never changes which product we put first. How we make money
What's in a glass of SA70 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 came closest to a limit, at 95% of it. 17 of 20 substances used under a quarter of theirs.
- Iron95%
- Nitrite40%
- Trihalomethanes38%
- Colour23%
- Nitrate19%
- Fluoride7%
- Turbidity7%
- Manganese5%
- Mercury4%
- Copper3%
- Chromium3%
- Nickel3%
- Boron3%
- Aluminium3%
- Lead2%
- Arsenic1%
- Antimony<1%
- Selenium<1%
- Cadmium<1%
- Bromate<1%
- E. coli none found
- Coliform Bacteria none found
- Conductivity 180 µS/cm
All 23 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| Iron | 0.19 mg/L | 0.2 mg/L | 95% |
| E. coli | 0 count/100ml | Must be zero | None found |
| Coliform Bacteria | 0 count/100ml | Must be zero | None found |
| Aluminium | 0.005 mg/L | 0.2 mg/L | 3% |
| Conductivity | 180 µS/cm | No legal limit | – |
| Manganese | 0.0027 mg/L | 0.05 mg/L | 5% |
| Colour | 4.6 mg/L Pt/Co | 20 mg/L Pt/Co | 23% |
| Turbidity | 0.27 NTU | 4 NTU | 7% |
| Bromate | 3.1e-7 mg/L | 0.01 mg/L | <1% |
| Trihalomethanes | 0.038 mg/L | 0.1 mg/L | 38% |
| Mercury | 0.000042 mg/L | 0.001 mg/L | 4% |
| Boron | 0.028 mg/L | 1 mg/L | 3% |
| Selenium | 0.00023 mg/L | 0.04 mg/L | <1% |
| Antimony | 0.000044 mg/L | 0.005 mg/L | <1% |
| Chromium | 0.0015 mg/L | 0.05 mg/L | 3% |
| Lead | 0.00016 mg/L | 0.01 mg/L | 2% |
| Nickel | 0.00059 mg/L | 0.02 mg/L | 3% |
| Arsenic | 0.00011 mg/L | 0.01 mg/L | 1% |
| Fluoride | 0.11 mg/L | 1.5 mg/L | 7% |
| Cadmium | 0.000025 mg/L | 0.005 mg/L | <1% |
| Copper | 0.063 mg/L | 2 mg/L | 3% |
| Nitrite | 0.2 mg/L | 0.5 mg/L | 40% |
| Nitrate | 9.56 mg/L | 50 mg/L | 19% |
SA70 in short
Tap water in SA70 (Pembrokeshire) is supplied by Dŵr Cymru Welsh Water in the Pembrokeshire Central zone and scores 9.1 out of 10, against an England and Wales average of 9.0. 1 of 23 tested substances was close to or over a limit. The latest sample is from 13 December 2024.
- Iron is within its legal limit but flagged, at 95% of the 0.2 mg/L maximumAnything over three quarters of a limit is flagged here as worth watching. It has not gone over. See every reading
- The lowest score of the 18 areas tested in PembrokeshireSA70 scores 9.1 out of 10. The best in Pembrokeshire, SA36, scores 10.
- Every one of the 10 neighbouring districts scores higherSA36 next door scores 10, against 9.1 here. Supply zones, not distance, explain the gap. See SA36
Questions about SA70 water
Is SA70 tap water safe to drink?
Based on the latest tests, SA70 (Pembrokeshire) water scores 9.1/10, which is safe. 1 of 23 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.
What contaminants are in SA70 water?
We tested 23 contaminants in SA70 water. 1 were flagged, including Iron.
Who supplies water in SA70?
SA70 (Pembrokeshire) 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 SA70?
With 1 contaminant above recommended levels in SA70, 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 SA70 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for SA70, 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
- Best Water Filters UKEvery filter type compared on what it actually removes
- Is UK Tap Water Safe?Everything you need to know about tap water safety in the UK
- How to Test Your Tap WaterFrom DIY strips to professional lab analysis
- Best Water Filter Jug UKBRITA vs ZeroWater vs the rest, tested against real data
How to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map
Get alerts for your area
We'll email you when water quality data changes for SA70.