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tapwater
England and Wales average 9.0

Tap water in SA40, CeredigionSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 544 samples, 23 substances, latest on 30 December 2024. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.5 / 10

The tank is as full as the score.

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What's in a glass of SA40 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 40% of it. 19 of 20 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitBromate: 3.1e-7 mg/L, <1% of the 0.01 mg/L limitBromate<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: 0.000032 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%Manganese: 0.0012 mg/L, 2% of the 0.05 mg/L limitManganese2%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Arsenic: 0.00028 mg/L, 3% of the 0.01 mg/L limitArsenic3%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%Chromium: 0.0015 mg/L, 3% of the 0.05 mg/L limitChromium3%Iron: 0.0076 mg/L, 4% of the 0.2 mg/L limitIron4%Mercury: 0.000042 mg/L, 4% of the 0.001 mg/L limitMercury4%Nitrate: 2.61 mg/L, 5% of the 50 mg/L limitNitrate5%Aluminium: 0.013 mg/L, 7% of the 0.2 mg/L limitAluminium7%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Fluoride: 0.11 mg/L, 7% of the 1.5 mg/L limitFluoride7%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Trihalomethanes: 0.04 mg/L, 40% of the 0.1 mg/L limitTrihalomethanes40%
  1. Trihalomethanes40%
  2. Colour23%
  3. Fluoride7%
  4. Turbidity7%
  5. Aluminium7%
  6. Nitrate5%
  7. Mercury4%
  8. Iron4%
  9. Chromium3%
  10. Nickel3%
  11. Copper3%
  12. Arsenic3%
  13. Boron3%
  14. Nitrite3%
  15. Manganese2%
  16. Lead2%
  17. Antimony<1%
  18. Selenium<1%
  19. Cadmium<1%
  20. Bromate<1%
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 77 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
Conductivity77 µS/cmNo legal limit–
Aluminium0.013 mg/L0.2 mg/L
7%
Iron0.0076 mg/L0.2 mg/L
4%
Manganese0.0012 mg/L0.05 mg/L
2%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Turbidity0.27 NTU4 NTU
7%
Trihalomethanes0.04 mg/L0.1 mg/L
40%
Boron0.028 mg/L1 mg/L
3%
Nickel0.00059 mg/L0.02 mg/L
3%
Mercury0.000042 mg/L0.001 mg/L
4%
Chromium0.0015 mg/L0.05 mg/L
3%
Selenium0.00023 mg/L0.04 mg/L
<1%
Lead0.00016 mg/L0.01 mg/L
2%
Antimony0.000032 mg/L0.005 mg/L
<1%
Arsenic0.00028 mg/L0.01 mg/L
3%
Copper0.058 mg/L2 mg/L
3%
Fluoride0.11 mg/L1.5 mg/L
7%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Nitrite0.013 mg/L0.5 mg/L
3%
Nitrate2.61 mg/L50 mg/L
5%
Bromate3.1e-7 mg/L0.01 mg/L
<1%

SA40 in short

Tap water in SA40 (Ceredigion) is supplied by Dŵr Cymru Welsh Water in the Ceredigion Central zone and scores 9.5 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 30 December 2024.

  • Trihalomethanes is the reading closest to its limit, at 40% of the 0.1 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 4th cleanest of 10 areas tested in CeredigionOnly 3 areas in Ceredigion scored higher. The best is SA43 on 9.6.
  • Scores higher than 2 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

SA469.5 out of 10SA439.6 out of 10SA449.4 out of 10SA479.5 out of 10SA459.5 out of 10SA489.6 out of 10SY239.6 out of 10 · 16 mg/LSY259.5 out of 10 · 16 mg/LSY249.4 out of 10 · 16 mg/L

Questions about SA40 water

Is SA40 tap water safe to drink?

Based on the latest tests, SA40 (Ceredigion) water scores 9.5/10, which is safe. 0 of 23 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in SA40 water?

We tested 23 contaminants in SA40 water. None exceeded recommended safe levels.

Who supplies water in SA40?

SA40 (Ceredigion) 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 SA40?

SA40 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 SA40 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SA40, 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