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tapwater
England and Wales average 9.0

Tap water in CF39, Rhondda Cynon TafSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 958 samples, 23 substances, latest on 21 December 2024. 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 CF39 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 28% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.000092 mg/L, <1% of the 0.05 mg/L limitChromium<1%Cadmium: 0.000025 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Selenium: 0.00023 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Antimony: 0.000031 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Arsenic: 0.00011 mg/L, 1% of the 0.01 mg/L limitArsenic1%Manganese: 0.00068 mg/L, 1% of the 0.05 mg/L limitManganese1%Boron: 0.028 mg/L, 3% of the 1 mg/L limitBoron3%Copper: 0.058 mg/L, 3% of the 2 mg/L limitCopper3%Nickel: 0.00059 mg/L, 3% of the 0.02 mg/L limitNickel3%Mercury: 0.000042 mg/L, 4% of the 0.001 mg/L limitMercury4%Bromate: 0.00046 mg/L, 5% of the 0.01 mg/L limitBromate5%Nitrate: 2.61 mg/L, 5% of the 50 mg/L limitNitrate5%Lead: 0.00055 mg/L, 6% of the 0.01 mg/L limitLead6%Aluminium: 0.011 mg/L, 5% of the 0.2 mg/L limitAluminium5%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Fluoride: 0.11 mg/L, 7% of the 1.5 mg/L limitFluoride7%Iron: 0.017 mg/L, 9% of the 0.2 mg/L limitIron9%Nitrite: 0.056 mg/L, 11% of the 0.5 mg/L limitNitrite11%Trihalomethanes: 0.015 mg/L, 15% of the 0.1 mg/L limitTrihalomethanes15%Colour: 5.5 mg/L Pt/Co, 28% of the 20 mg/L Pt/Co limitColour28%
  1. Colour28%
  2. Trihalomethanes15%
  3. Nitrite11%
  4. Iron9%
  5. Fluoride7%
  6. Turbidity7%
  7. Lead6%
  8. Aluminium5%
  9. Nitrate5%
  10. Bromate5%
  11. Mercury4%
  12. Nickel3%
  13. Copper3%
  14. Boron3%
  15. Manganese1%
  16. Arsenic1%
  17. Antimony<1%
  18. Selenium<1%
  19. Cadmium<1%
  20. Chromium<1%
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 110 µS/cm
All 23 results as a table
SubstanceResultLegal limitShare of limit
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Conductivity110 µS/cmNo legal limit–
Aluminium0.011 mg/L0.2 mg/L
5%
Manganese0.00068 mg/L0.05 mg/L
1%
Iron0.017 mg/L0.2 mg/L
9%
Colour5.5 mg/L Pt/Co20 mg/L Pt/Co
28%
Turbidity0.27 NTU4 NTU
7%
Bromate0.00046 mg/L0.01 mg/L
5%
Boron0.028 mg/L1 mg/L
3%
Trihalomethanes0.015 mg/L0.1 mg/L
15%
Antimony0.000031 mg/L0.005 mg/L
<1%
Selenium0.00023 mg/L0.04 mg/L
<1%
Chromium0.000092 mg/L0.05 mg/L
<1%
Nickel0.00059 mg/L0.02 mg/L
3%
Lead0.00055 mg/L0.01 mg/L
6%
Mercury0.000042 mg/L0.001 mg/L
4%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Arsenic0.00011 mg/L0.01 mg/L
1%
Fluoride0.11 mg/L1.5 mg/L
7%
Copper0.058 mg/L2 mg/L
3%
Nitrite0.056 mg/L0.5 mg/L
11%
Nitrate2.61 mg/L50 mg/L
5%

CF39 in short

Tap water in CF39 (Rhondda Cynon Taf) is supplied by Dŵr Cymru Welsh Water in the Rhondda Cynon Taf Central zone and scores 9.6 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 21 December 2024.

  • 2nd cleanest of 10 areas tested in Rhondda Cynon TafOnly 1 area in Rhondda Cynon Taf scored higher. The best is CF43 on 9.7.
  • 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 Colour at 28% of the 20 mg/L Pt/Co maximum. See every reading

Next door

CF409.4 out of 10CF379.5 out of 10CF389.5 out of 10CF419.5 out of 10CF429.4 out of 10CF459.5 out of 10CF729.6 out of 10CF449.5 out of 10CF439.7 out of 10

Questions about CF39 water

Is CF39 tap water safe to drink?

Based on the latest tests, CF39 (Rhondda Cynon Taf) water scores 9.6/10, which is safe. 0 of 23 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in CF39 water?

We tested 23 contaminants in CF39 water. None exceeded recommended safe levels.

Who supplies water in CF39?

CF39 (Rhondda Cynon Taf) 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 CF39?

CF39 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 CF39 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for CF39, 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

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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