Tap water in CF71, Vale of GlamorganSafe to drink.
Supplied by Dŵr Cymru Welsh Water. 324 samples, 8 substances, latest on 22 December 2024. Everything is inside the legal limit, and nothing comes close to it.
9.5 / 10
The tank is as full as the score.
What to do about it

ZeroWater 12-Cup Ready-Pour
£40typical price
Households concerned about PFAS and heavy metals

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

BRITA Marella XL + MAXTRA PRO
£25typical price
Basic chlorine and taste improvement on a budget
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 CF71 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.
Colour came closest to a limit, at 23% of it. 5 of 5 substances used under a quarter of theirs.
- Colour23%
- Iron18%
- Turbidity7%
- Aluminium3%
- Manganese2%
- Conductivity 210 µS/cm
- Coliform Bacteria none found
- E. coli none found
All 8 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| Conductivity | 210 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 | 0.00098 mg/L | 0.05 mg/L | 2% |
| Iron | 0.035 mg/L | 0.2 mg/L | 18% |
| Aluminium | 0.005 mg/L | 0.2 mg/L | 3% |
| Turbidity | 0.27 NTU | 4 NTU | 7% |
| Colour | 4.6 mg/L Pt/Co | 20 mg/L Pt/Co | 23% |
CF71 in short
Tap water in CF71 (Vale of Glamorgan) is supplied by Dŵr Cymru Welsh Water in the Vale of Glamorgan Central zone and scores 9.5 out of 10, against an England and Wales average of 9.0. None of the 8 tested substances came close to a limit. The latest sample is from 22 December 2024.
- 2nd cleanest of 5 areas tested in Vale of GlamorganOnly 1 area in Vale of Glamorgan scored higher. The best is CF61 on 9.5.
- Nothing tested came within 40% of its legal limitThe highest was Colour at 23% of the 20 mg/L Pt/Co maximum. See every reading
- Scores higher than 3 of 4 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.
Questions about CF71 water
Is CF71 tap water safe to drink?
Based on the latest tests, CF71 (Vale of Glamorgan) water scores 9.5/10, which is safe. 0 of 8 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.
What contaminants are in CF71 water?
We tested 8 contaminants in CF71 water. None exceeded recommended safe levels.
Who supplies water in CF71?
CF71 (Vale of Glamorgan) 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 CF71?
CF71 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 CF71 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for CF71, 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
- Is UK Tap Water Safe?Everything you need to know about tap water safety in the UK
- Best Water Filters UKEvery filter type compared on what it actually removes
- 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 CF71.