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tapwater
England and Wales average 9.0

Tap water in SA18, CarmarthenshireSafe to drink.

Supplied by Dŵr Cymru Welsh Water. 933 samples, 23 substances, latest on 23 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.

What to do about it

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What's in a glass of SA18 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 38% 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%Chromium: 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%Antimony: 0.000028 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Selenium: 0.00023 mg/L, <1% of the 0.04 mg/L limitSelenium<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%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%Aluminium: 0.005 mg/L, 3% of the 0.2 mg/L limitAluminium3%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%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%Nitrate: 2.61 mg/L, 5% of the 50 mg/L limitNitrate5%Iron: 0.013 mg/L, 7% of the 0.2 mg/L limitIron7%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: 0.038 mg/L, 38% of the 0.1 mg/L limitTrihalomethanes38%
  1. Trihalomethanes38%
  2. Colour23%
  3. Fluoride7%
  4. Turbidity7%
  5. Iron7%
  6. Nitrate5%
  7. Mercury4%
  8. Nickel3%
  9. Copper3%
  10. Boron3%
  11. Nitrite3%
  12. Aluminium3%
  13. Lead2%
  14. Manganese1%
  15. Arsenic1%
  16. Selenium<1%
  17. Antimony<1%
  18. Cadmium<1%
  19. Chromium<1%
  20. Bromate<1%
  • E. coli none found
  • Conductivity 140 µS/cm
  • Coliform Bacteria none found
All 23 results as a table
SubstanceResultLegal limitShare of limit
E. coli0 count/100mlMust be zeroNone found
Conductivity140 µS/cmNo legal limit–
Coliform Bacteria0 count/100mlMust be zeroNone found
Aluminium0.005 mg/L0.2 mg/L
3%
Iron0.013 mg/L0.2 mg/L
7%
Manganese0.00068 mg/L0.05 mg/L
1%
Turbidity0.27 NTU4 NTU
7%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Fluoride0.11 mg/L1.5 mg/L
7%
Lead0.00016 mg/L0.01 mg/L
2%
Nickel0.00059 mg/L0.02 mg/L
3%
Copper0.058 mg/L2 mg/L
3%
Nitrite0.013 mg/L0.5 mg/L
3%
Nitrate2.61 mg/L50 mg/L
5%
Bromate3.1e-7 mg/L0.01 mg/L
<1%
Trihalomethanes0.038 mg/L0.1 mg/L
38%
Boron0.028 mg/L1 mg/L
3%
Antimony0.000028 mg/L0.005 mg/L
<1%
Selenium0.00023 mg/L0.04 mg/L
<1%
Mercury0.000042 mg/L0.001 mg/L
4%
Arsenic0.00011 mg/L0.01 mg/L
1%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Chromium0.000092 mg/L0.05 mg/L
<1%

SA18 in short

Tap water in SA18 (Carmarthenshire) is supplied by Dŵr Cymru Welsh Water in the Carmarthenshire 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 23 December 2024.

  • 5th cleanest of 13 areas tested in CarmarthenshireOnly 4 areas in Carmarthenshire scored higher. The best is SA14 on 9.6.
  • 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 Trihalomethanes at 38% of the 0.1 mg/L maximum. See every reading

Next door

SA329.6 out of 10SA339.3 out of 10SA349.3 out of 10SA389.4 out of 10SA179.6 out of 10SA199.5 out of 10SA209.5 out of 10SA169.6 out of 10SA149.6 out of 10SA159.6 out of 10

Questions about SA18 water

Is SA18 tap water safe to drink?

Based on the latest tests, SA18 (Carmarthenshire) 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 SA18 water?

We tested 23 contaminants in SA18 water. None exceeded recommended safe levels.

Who supplies water in SA18?

SA18 (Carmarthenshire) 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 SA18?

SA18 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 SA18 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SA18, 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