Skip to main content
tapwater
England and Wales average 9.0

Tap water in BS25, North SomersetToo few tap tests to call it.

Supplied by Bristol Water. 8 substances, latest on 3 July 2026. These are river and groundwater samples near BS25, not tests of treated tap water, so treat the score as a rough guide.

See the filter we recommendSee everything that was tested

8.6 / 10

The tank is as full as the score.

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 BS25 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 34% of it. 4 of 5 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.0012 mg/L, <1% of the 2 mg/L limitCopper<1%Aluminium: 0.012 mg/L, 6% of the 0.2 mg/L limitAluminium6%Cadmium: 0.00081 mg/L, 16% of the 0.005 mg/L limitCadmium16%Iron: 0.035 mg/L, 18% of the 0.2 mg/L limitIron18%Lead: 0.0034 mg/L, 34% of the 0.01 mg/L limitLead34%
  1. Lead34%
  2. Iron18%
  3. Cadmium16%
  4. Aluminium6%
  5. Copper<1%
  • pH 7.84 pH
  • Zinc 0.047 mg/L
All 8 results as a table
SubstanceResultLegal limitShare of limit
pH7.84 pHNo legal limit–
Iron0.035 mg/L0.2 mg/L
18%
Cadmium0.00081 mg/L0.005 mg/L
16%
Hardness (as CaCO3)157 mg/LNo legal limit–
Zinc0.047 mg/LNo legal limit–
Aluminium0.012 mg/L0.2 mg/L
6%
Lead0.0034 mg/L0.01 mg/L
34%
Copper0.0012 mg/L2 mg/L
<1%
Outside your tap

Your river is the Oldbridge R - source to nr Manor Fm, rated moderate

The Environment Agency rated the Oldbridge R - source to nr Manor Fm as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by phosphate. 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

BS25 in short

Tap water in BS25 (North Somerset) is supplied by Bristol Water in the North Somerset Central zone and scores 8.6 out of 10, against an England and Wales average of 9.0. None of the 8 tested substances came close to a limit. The latest sample is from 3 July 2026.

  • 8th cleanest of 10 areas tested in Bristol2 areas in Bristol scored lower. The best is BS40 on 9.6. Every area in Bristol
  • Nothing tested came within 40% of its legal limitThe highest was Lead at 34% of the 0.01 mg/L maximum. See every reading
  • 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

BS489.0 out of 10BS499.5 out of 10BS219.0 out of 10BS239.4 out of 10BS298.3 out of 10BS209.2 out of 10BS249.2 out of 10BS409.6 out of 10BS417.7 out of 10

Also nearby: BS22

Questions about BS25 water

Is BS25 tap water safe to drink?

Based on the latest tests, BS25 (North Somerset) water scores 8.6/10, which is safe. 0 of 8 tested contaminants exceeded recommended levels. Water is supplied by Bristol Water.

What contaminants are in BS25 water?

We tested 8 contaminants in BS25 water. None exceeded recommended safe levels.

Who supplies water in BS25?

BS25 (North Somerset) is supplied by Bristol Water. You can view their full profile and compliance data on our supplier page.

Should I use a water filter in BS25?

BS25 water scored 8.6/10 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 BS25 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for BS25, 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 BS25?

The Environment Agency rated the Oldbridge R - source to nr Manor Fm as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by phosphate. 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 BS25, which is treated before it reaches homes.

Keep reading

How to test your waterBest water filtersFilter shower headsWater testing kitsAll of BristolUK water rankingsWater hardness checkerWater hardness map

Get alerts for your area

We'll email you when water quality data changes for BS25.