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England and Wales average 9.0

Tap water in BS27, SomersetAmmonia is over the limit.

Supplied by Wessex Water. 12 substances, latest on 19 March 2024. Ammonia came in above the legal limit. Everything else passed.

See the filter we recommendSee everything that was tested

6.6 / 10

The tank is as full as the score.

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What's in a glass of BS27 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.

Ammonia is over its legal limit, at 288% of it.

0%25%50%75%limitLegal limitCadmium: 0.0001 mg/L, 2% of the 0.005 mg/L limitCadmium2%Nitrate: 3.47 mg/L, 7% of the 50 mg/L limitNitrate7%Nitrite: 0.0582 mg/L, 12% of the 0.5 mg/L limitNitrite12%Lead: 0.0036 mg/L, 36% of the 0.01 mg/L limitLead36%Ammonia: 1.44 mg/L, 288% of the 0.5 mg/L limitAmmonia288%
  1. Ammonia288%
  2. Lead36%
  3. Nitrite12%
  4. Nitrate7%
  5. Cadmium2%
  • pH 8.12 pH
  • Zinc 0.035 mg/L
  • Temperature 7.2 °C
  • Conductivity 682 µS/cm
  • Phosphate 0.512 mg/L
  • Dissolved Oxygen 5.04 mg/L
All 12 results as a table
SubstanceResultLegal limitShare of limit
Ammonia1.44 mg/L0.5 mg/L
288%
Lead0.0036 mg/L0.01 mg/L
36%
pH8.12 pHNo legal limit–
Hardness (as CaCO3)278 mg/LNo legal limit–
Zinc0.035 mg/LNo legal limit–
Cadmium0.0001 mg/L0.005 mg/L
2%
Temperature7.2 °CNo legal limit–
Conductivity682 µS/cmNo legal limit–
Phosphate0.512 mg/LNo legal limit–
Dissolved Oxygen5.04 mg/LNo legal limit–
Nitrate3.47 mg/L50 mg/L
7%
Nitrite0.0582 mg/L0.5 mg/L
12%
Outside your tap

Your river is the Cheddar Yeo - source to conf River Axe, rated moderate

The Environment Agency rated the Cheddar Yeo - source to conf River Axe as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by water plants and algae, dissolved oxygen and 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

BS27 in short

Tap water in BS27 (Somerset) is supplied by Wessex Water in the Somerset Central zone and scores 6.6 out of 10, against an England and Wales average of 9.0. 1 of 12 tested substances was close to or over a limit. The latest sample is from 19 March 2024.

  • The newest sample here is from March 2024That is over 2 years old, so treat this page as a record of past results rather than today's tap water.
  • Ammonia was measured at 1.44 mg/L, 2.9 times the UK limitIt is the only one of 12 tested substances to go over its limit. See the full results
  • 37th cleanest of 40 areas tested in Somerset3 areas in Somerset scored lower. The best is TA21 on 9.6.

Next door

BA47.7 out of 10 · 288 mg/LBA57.9 out of 10 · 288 mg/LBA79.3 out of 10 · 290 mg/LBA67.6 out of 10 · 288 mg/LBA119.2 out of 10 · 283 mg/LTA108.0 out of 10 · 58 mg/LBA98.8 out of 10 · 290 mg/LBA167.6 out of 10 · 288 mg/LBA209.2 out of 10 · 172 mg/LBA219.2 out of 10 · 285 mg/L

Questions about BS27 water

Is BS27 tap water safe to drink?

Based on the latest tests, BS27 (Somerset) water scores 6.6/10, which is mostly safe but has some issues. 1 of 12 tested contaminants exceeded recommended levels. Water is supplied by Wessex Water.

What contaminants are in BS27 water?

We tested 12 contaminants in BS27 water. 1 were flagged, including Ammonia.

Who supplies water in BS27?

BS27 (Somerset) is supplied by Wessex Water. You can view their full profile and compliance data on our supplier page.

Should I use a water filter in BS27?

With 1 contaminant above recommended levels in BS27, a water filter could help. A filter jug or under-sink filter can reduce most common contaminants. See our filter recommendations for your area.

Are there PFAS forever chemicals in BS27 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for BS27, 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 BS27?

The Environment Agency rated the Cheddar Yeo - source to conf River Axe as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by water plants and algae, dissolved oxygen and 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 BS27, which is treated before it reaches homes.

Keep reading

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