Skip to main content
tapwater
England and Wales average 9.0

Tap water in SY17, PowysSafe to drink.Soft.

Supplied by Dŵr Cymru Welsh Water. 138 samples, 18 substances, latest on 19 December 2025. 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 SY17 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 22% of it. 16 of 16 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitSelenium: 0.00007 mg/L, <1% of the 0.04 mg/L limitSelenium<1%Cadmium: 0.00002 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Chromium: 0.00042 mg/L, <1% of the 0.05 mg/L limitChromium<1%Copper: 0.0197 mg/L, <1% of the 2 mg/L limitCopper<1%Antimony: 0.000059 mg/L, 1% of the 0.005 mg/L limitAntimony1%Arsenic: 0.00018 mg/L, 2% of the 0.01 mg/L limitArsenic2%Iron: 0.0037 mg/L, 2% of the 0.2 mg/L limitIron2%Nitrite: 0.013 mg/L, 3% of the 0.5 mg/L limitNitrite3%Turbidity: 0.12 NTU, 3% of the 4 NTU limitTurbidity3%Manganese: 0.00177 mg/L, 4% of the 0.05 mg/L limitManganese4%Colour: 0.8 mg/L Pt/Co, 4% of the 20 mg/L Pt/Co limitColour4%Trihalomethanes: 0.00432 mg/L, 4% of the 0.1 mg/L limitTrihalomethanes4%Aluminium: 0.0094 mg/L, 5% of the 0.2 mg/L limitAluminium5%Nickel: 0.001 mg/L, 5% of the 0.02 mg/L limitNickel5%Nitrate: 7.3 mg/L, 15% of the 50 mg/L limitNitrate15%Lead: 0.00216 mg/L, 22% of the 0.01 mg/L limitLead22%
  1. Lead22%
  2. Nitrate15%
  3. Nickel5%
  4. Aluminium5%
  5. Trihalomethanes4%
  6. Colour4%
  7. Manganese4%
  8. Turbidity3%
  9. Nitrite3%
  10. Iron2%
  11. Arsenic2%
  12. Antimony1%
  13. Copper<1%
  14. Chromium<1%
  15. Cadmium<1%
  16. Selenium<1%
  • pH 7.64 pH
  • Phosphate 0.71 mg/L
All 18 results as a table
SubstanceResultLegal limitShare of limit
Colour0.8 mg/L Pt/Co20 mg/L Pt/Co
4%
Turbidity0.12 NTU4 NTU
3%
pH7.64 pHNo legal limit–
Arsenic0.00018 mg/L0.01 mg/L
2%
Cadmium0.00002 mg/L0.005 mg/L
<1%
Selenium0.00007 mg/L0.04 mg/L
<1%
Nitrate7.3 mg/L50 mg/L
15%
Chromium0.00042 mg/L0.05 mg/L
<1%
Nickel0.001 mg/L0.02 mg/L
5%
Lead0.00216 mg/L0.01 mg/L
22%
Antimony0.000059 mg/L0.005 mg/L
1%
Aluminium0.0094 mg/L0.2 mg/L
5%
Nitrite0.013 mg/L0.5 mg/L
3%
Iron0.0037 mg/L0.2 mg/L
2%
Manganese0.00177 mg/L0.05 mg/L
4%
Copper0.0197 mg/L2 mg/L
<1%
Trihalomethanes0.00432 mg/L0.1 mg/L
4%
Phosphate0.71 mg/LNo legal limit–

16mg of limescale minerals in every litre, typical for the SY area. SY17 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

SY17 in short

Tap water in SY17 (Powys) is supplied by Dŵr Cymru Welsh Water in the Powys Central zone and scores 9.5 out of 10, against an England and Wales average of 9.0. None of the 18 tested substances came close to a limit. The latest sample is from 19 December 2025.

  • 6th cleanest of 17 areas tested in PowysOnly 5 areas in Powys scored higher. 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
  • Nothing tested came within 40% of its legal limitThe highest was Lead at 22% of the 0.01 mg/L maximum. See every reading

Next door

SY209.6 out of 10 · 16 mg/LSY159.3 out of 10 · 16 mg/LSY189.3 out of 10 · 16 mg/LSY219.5 out of 10 · 16 mg/LLD29.4 out of 10LD39.7 out of 10SY169.1 out of 10 · 16 mg/LLD49.4 out of 10LD59.4 out of 10LD69.4 out of 10

Questions about SY17 water

Is SY17 tap water safe to drink?

Based on the latest tests, SY17 (Powys) water scores 9.5/10, which is safe. 0 of 18 tested contaminants exceeded recommended levels. Water is supplied by Dŵr Cymru Welsh Water.

What contaminants are in SY17 water?

We tested 18 contaminants in SY17 water. None exceeded recommended safe levels.

Who supplies water in SY17?

SY17 (Powys) is supplied by Dŵr Cymru Welsh Water. You can view their full profile and compliance data on our supplier page.

Is SY17 water hard or soft?

No hardness reading has been published for SY17 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 SY17?

SY17 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 SY17 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for SY17, 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 SY17.

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