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England and Wales average 9.0

Tap water in CF42, Rhondda Cynon TafSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 300 samples, 19 substances, latest on 9 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.4 / 10

The tank is as full as the score.

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What's in a glass of CF42 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.

Lead came closest to a limit, at 28% of it. 15 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 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: 0.000053 mg/L, 1% of the 0.005 mg/L limitAntimony1%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%Iron: 0.004 mg/L, 2% of the 0.2 mg/L limitIron2%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%Chromium: 0.0015 mg/L, 3% of the 0.05 mg/L limitChromium3%Nitrate: 2.61 mg/L, 5% of the 50 mg/L limitNitrate5%Aluminium: 0.012 mg/L, 6% of the 0.2 mg/L limitAluminium6%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Nitrite: 0.056 mg/L, 11% of the 0.5 mg/L limitNitrite11%Trihalomethanes: 0.012 mg/L, 12% of the 0.1 mg/L limitTrihalomethanes12%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Lead: 0.0028 mg/L, 28% of the 0.01 mg/L limitLead28%
  1. Lead28%
  2. Colour23%
  3. Trihalomethanes12%
  4. Nitrite11%
  5. Turbidity7%
  6. Aluminium6%
  7. Nitrate5%
  8. Chromium3%
  9. Nickel3%
  10. Copper3%
  11. Iron2%
  12. Manganese1%
  13. Arsenic1%
  14. Antimony1%
  15. Selenium<1%
  16. Cadmium<1%
  • Conductivity 100 µS/cm
  • E. coli none found
  • Coliform Bacteria none found
All 19 results as a table
SubstanceResultLegal limitShare of limit
Conductivity100 µS/cmNo legal limit–
E. coli0 count/100mlMust be zeroNone found
Iron0.004 mg/L0.2 mg/L
2%
Aluminium0.012 mg/L0.2 mg/L
6%
Coliform Bacteria0 count/100mlMust be zeroNone found
Manganese0.00068 mg/L0.05 mg/L
1%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Turbidity0.27 NTU4 NTU
7%
Trihalomethanes0.012 mg/L0.1 mg/L
12%
Lead0.0028 mg/L0.01 mg/L
28%
Antimony0.000053 mg/L0.005 mg/L
1%
Nickel0.00059 mg/L0.02 mg/L
3%
Selenium0.00023 mg/L0.04 mg/L
<1%
Chromium0.0015 mg/L0.05 mg/L
3%
Copper0.058 mg/L2 mg/L
3%
Arsenic0.00011 mg/L0.01 mg/L
1%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Nitrite0.056 mg/L0.5 mg/L
11%
Nitrate2.61 mg/L50 mg/L
5%

CF42 in short

Tap water in CF42 (Rhondda Cynon Taf) is supplied by Dŵr Cymru Welsh Water in the Rhondda Cynon Taf Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 19 tested substances came close to a limit. The latest sample is from 9 December 2024.

  • The lowest score of the 10 areas tested in Rhondda Cynon TafCF42 scores 9.4 out of 10. The best in Rhondda Cynon Taf, CF43, scores 9.7.
  • Nothing tested came within 40% of its legal limitThe highest was Lead at 28% of the 0.01 mg/L maximum. See every reading
  • Scores higher than 0 of 9 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

CF409.4 out of 10CF379.5 out of 10CF399.6 out of 10CF389.5 out of 10CF419.5 out of 10CF459.5 out of 10CF729.6 out of 10CF449.5 out of 10CF439.7 out of 10

Questions about CF42 water

Is CF42 tap water safe to drink?

Based on the latest tests, CF42 (Rhondda Cynon Taf) water scores 9.4/10, which is safe. 0 of 19 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in CF42 water?

We tested 19 contaminants in CF42 water. None exceeded recommended safe levels.

Who supplies water in CF42?

CF42 (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 CF42?

CF42 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 CF42 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for CF42, 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