Skip to main content
tapwater
England and Wales average 9.0

Tap water in SY25, CeredigionSafe to drink.Soft.

Supplied by Dŵr Cymru Welsh Water. 351 samples, 22 substances, latest on 27 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. The specks are the minerals that make water hard.

What to do about it

ZeroWater 12-Cup Ready-Pour

ZeroWater 12-Cup Ready-Pour

£40typical price

Households concerned about PFAS and heavy metals

Check price at Amazon (opens in new tab)
Waterdrop 10UA Under Sink

Waterdrop 10UA Under Sink

£70typical price

High-volume under-sink filtration without RO complexity

Check price at Waterdrop (opens in new tab)
BRITA Marella XL + MAXTRA PRO

BRITA Marella XL + MAXTRA PRO

£25typical price

Basic chlorine and taste improvement on a budget

Check price at Amazon (opens in new tab)

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 SY25 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 33% of it. 18 of 19 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: 0.000031 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Lead: 0.00016 mg/L, 2% of the 0.01 mg/L limitLead2%Arsenic: 0.00025 mg/L, 3% of the 0.01 mg/L limitArsenic3%Manganese: 0.0013 mg/L, 3% of the 0.05 mg/L limitManganese3%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%Chromium: 0.0015 mg/L, 3% of the 0.05 mg/L limitChromium3%Iron: 0.0071 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%Turbidity: 0.27 NTU, 7% of the 4 NTU limitTurbidity7%Fluoride: 0.11 mg/L, 7% of the 1.5 mg/L limitFluoride7%Aluminium: 0.018 mg/L, 9% of the 0.2 mg/L limitAluminium9%Colour: 4.6 mg/L Pt/Co, 23% of the 20 mg/L Pt/Co limitColour23%Trihalomethanes: 0.033 mg/L, 33% of the 0.1 mg/L limitTrihalomethanes33%
  1. Trihalomethanes33%
  2. Colour23%
  3. Aluminium9%
  4. Fluoride7%
  5. Turbidity7%
  6. Nitrate5%
  7. Mercury4%
  8. Iron4%
  9. Chromium3%
  10. Nickel3%
  11. Copper3%
  12. Boron3%
  13. Manganese3%
  14. Nitrite3%
  15. Arsenic3%
  16. Lead2%
  17. Antimony<1%
  18. Selenium<1%
  19. Cadmium<1%
  • Conductivity 71 µS/cm
  • Coliform Bacteria none found
  • E. coli none found
All 22 results as a table
SubstanceResultLegal limitShare of limit
Conductivity71 µS/cmNo legal limit–
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Manganese0.0013 mg/L0.05 mg/L
3%
Iron0.0071 mg/L0.2 mg/L
4%
Turbidity0.27 NTU4 NTU
7%
Aluminium0.018 mg/L0.2 mg/L
9%
Colour4.6 mg/L Pt/Co20 mg/L Pt/Co
23%
Trihalomethanes0.033 mg/L0.1 mg/L
33%
Boron0.028 mg/L1 mg/L
3%
Nickel0.00059 mg/L0.02 mg/L
3%
Selenium0.00023 mg/L0.04 mg/L
<1%
Antimony0.000031 mg/L0.005 mg/L
<1%
Lead0.00016 mg/L0.01 mg/L
2%
Copper0.058 mg/L2 mg/L
3%
Arsenic0.00025 mg/L0.01 mg/L
3%
Chromium0.0015 mg/L0.05 mg/L
3%
Fluoride0.11 mg/L1.5 mg/L
7%
Mercury0.000042 mg/L0.001 mg/L
4%
Cadmium0.000025 mg/L0.005 mg/L
<1%
Nitrite0.013 mg/L0.5 mg/L
3%
Nitrate2.61 mg/L50 mg/L
5%

16mg of limescale minerals in every litre, typical for the SY area. SY25 has no reading of its own.

Soft water. Kind to kettles, boilers and skin

You will not need a softener here, and you will use less soap and detergent than most of England.

Soft400 mg/L

SY25 in short

Tap water in SY25 (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 22 tested substances came close to a limit. The latest sample is from 27 December 2024.

  • 8th cleanest of 10 areas tested in Ceredigion2 areas in Ceredigion scored lower. The best is SA43 on 9.6.
  • Soft water at 16 mg/LLimescale is not a problem across the SY postcode area, so skip softeners and scale filters entirely. How hardness is measured
  • Nothing tested came within 40% of its legal limitThe highest was Trihalomethanes at 33% of the 0.1 mg/L maximum. See every reading

Next door

SA409.5 out of 10SA439.6 out of 10SA469.5 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/LSY249.4 out of 10 · 16 mg/L

Questions about SY25 water

Is SY25 tap water safe to drink?

Based on the latest tests, SY25 (Ceredigion) water scores 9.5/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in SY25 water?

We tested 22 contaminants in SY25 water. None exceeded recommended safe levels.

Who supplies water in SY25?

SY25 (Ceredigion) is supplied by Dŵr Cymru Welsh Water. You can view their full profile and compliance data on our supplier page.

Is SY25 water hard or soft?

No hardness reading has been published for SY25 itself. Across the SY postcode area the typical value is 16 mg/L CaCO3, which is classified as soft. Soft water is gentle on appliances and skin.

Should I use a water filter in SY25?

SY25 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 SY25 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SY25, 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

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 SY25.

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