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tapwater
England and Wales average 9.0

Tap water in SY15, PowysSafe to drink.Soft.

Supplied by Dŵr Cymru Welsh Water. 628 samples, 22 substances, latest on 5 December 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.3 / 10

The tank is as full as the score. The specks are the minerals that make water hard.

What to do about it

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Basic chlorine and taste improvement on a budget

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What's in a glass of SY15 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.

Nitrate came closest to a limit, at 47% of it. 18 of 19 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 0.00001 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Selenium: 0.00015 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Arsenic: 0.00014 mg/L, 1% of the 0.01 mg/L limitArsenic1%Manganese: 0.00073 mg/L, 1% of the 0.05 mg/L limitManganese1%Copper: 0.0381 mg/L, 2% of the 2 mg/L limitCopper2%Antimony: 0.000105 mg/L, 2% of the 0.005 mg/L limitAntimony2%Mercury: 0.000022 mg/L, 2% of the 0.001 mg/L limitMercury2%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Boron: 0.03 mg/L, 3% of the 1 mg/L limitBoron3%Iron: 0.007 mg/L, 3% of the 0.2 mg/L limitIron3%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Nickel: 0.001 mg/L, 5% of the 0.02 mg/L limitNickel5%Fluoride: 0.15 mg/L, 10% of the 1.5 mg/L limitFluoride10%Lead: 0.00102 mg/L, 10% of the 0.01 mg/L limitLead10%Trihalomethanes: 0.0103 mg/L, 10% of the 0.1 mg/L limitTrihalomethanes10%Aluminium: 0.021 mg/L, 11% of the 0.2 mg/L limitAluminium11%Nitrate: 23.5 mg/L, 47% of the 50 mg/L limitNitrate47%
  1. Nitrate47%
  2. Aluminium11%
  3. Trihalomethanes10%
  4. Lead10%
  5. Fluoride10%
  6. Nickel5%
  7. Colour4%
  8. Iron3%
  9. Turbidity3%
  10. Boron3%
  11. Nitrite3%
  12. Mercury2%
  13. Antimony2%
  14. Copper2%
  15. Manganese1%
  16. Arsenic1%
  17. Chromium<1%
  18. Selenium<1%
  19. Cadmium<1%
  • Conductivity 418 µS/cm
  • pH 7.89 pH
  • Phosphate 0.033 mg/L
All 22 results as a table
SubstanceResultLegal limitShare of limit
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
Arsenic0.00014 mg/L0.01 mg/L
1%
Cadmium0.00001 mg/L0.005 mg/L
<1%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.001 mg/L0.02 mg/L
5%
Conductivity418 µS/cmNo legal limit–
Lead0.00102 mg/L0.01 mg/L
10%
Antimony0.000105 mg/L0.005 mg/L
2%
pH7.89 pHNo legal limit–
Selenium0.00015 mg/L0.04 mg/L
<1%
Nitrate23.5 mg/L50 mg/L
47%
Nitrite0.013 mg/L0.5 mg/L
3%
Aluminium0.021 mg/L0.2 mg/L
11%
Iron0.007 mg/L0.2 mg/L
3%
Manganese0.00073 mg/L0.05 mg/L
1%
Copper0.0381 mg/L2 mg/L
2%
Fluoride0.15 mg/L1.5 mg/L
10%
Trihalomethanes0.0103 mg/L0.1 mg/L
10%
Mercury0.000022 mg/L0.001 mg/L
2%
Boron0.03 mg/L1 mg/L
3%
Phosphate0.033 mg/LNo legal limit–

16mg of limescale minerals in every litre, typical for the SY area. SY15 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
Outside your tap

Your river is the Tributary - source to conf R Camlad, rated poor

The Environment Agency rated the Tributary - source to conf R Camlad as poor for ecological health in its 2025 assessment, meaning the river is badly affected, with much of the expected wildlife missing. It is held back by water plants and algae, phosphate and insects and other small river life. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants.

None of this is a test of your tap water. Environment Agency record · River health across England

SY15 in short

Tap water in SY15 (Powys) is supplied by Dŵr Cymru Welsh Water in the Powys Central zone and scores 9.3 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 5 December 2025.

  • Nitrate is the reading closest to its limit, at 47% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 13th cleanest of 17 areas tested in Powys4 areas in Powys scored lower. The best is LD3 on 9.7.
  • 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

Next door

SY209.6 out of 10 · 16 mg/LSY179.5 out of 10 · 16 mg/LSY189.3 out of 10 · 16 mg/LSY219.5 out of 10 · 16 mg/LLD79.4 out of 10SY169.1 out of 10 · 16 mg/LLD29.4 out of 10LD39.7 out of 10LD49.4 out of 10LD59.4 out of 10

Questions about SY15 water

Is SY15 tap water safe to drink?

Based on the latest tests, SY15 (Powys) water scores 9.3/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in SY15 water?

We tested 22 contaminants in SY15 water. None exceeded recommended safe levels.

Who supplies water in SY15?

SY15 (Powys) is supplied by Dŵr Cymru Welsh Water. You can view their full profile and compliance data on our supplier page.

Is SY15 water hard or soft?

No hardness reading has been published for SY15 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 SY15?

SY15 water scored 9.3/10 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 SY15 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SY15, 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.

How clean is the river near SY15?

The Environment Agency rated the Tributary - source to conf R Camlad as poor for ecological health in its 2025 assessment, meaning the river is badly affected, with much of the expected wildlife missing. It is held back by water plants and algae, phosphate and insects and other small river life. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants. This is a rating of the river, not of tap water in SY15, which is treated before it reaches homes.

Keep reading

How to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near SY15

Environment Agency samples from rivers, groundwater and reservoirs nearby. Not your tap water. For scale they are shown against drinking water limits; rivers are judged against much stricter environmental standards, and on those every river in England fails for chemicals.

SubstanceReadingDrinking water limit
Ammonia3.42 mg/L0.5 mg/L
pH8.03 pHNone
Temperature10.8 °CNone
Conductivity665 µS/cmNone
Nitrate5.94 mg/L50 mg/L
Nitrite0.0501 mg/L0.5 mg/L
Phosphate0.304 mg/LNone
Dissolved Oxygen11.1 mg/LNone

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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