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tapwater
England and Wales average 9.0

Tap water in TA17, SomersetToo few tap tests to call it.Slightly hard.

Supplied by Wessex Water. 8 substances, latest on 21 October 2026. These are river and groundwater samples near TA17, not tests of treated tap water, so treat the score as a rough guide.

See the filter we recommendSee everything that was tested

8.1 / 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 TA17 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 came closest to a limit, at 48% of it. 2 of 3 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitNitrite: 0.012 mg/L, 2% of the 0.5 mg/L limitNitrite2%Nitrate: 3.2 mg/L, 6% of the 50 mg/L limitNitrate6%Ammonia: 0.24 mg/L, 48% of the 0.5 mg/L limitAmmonia48%
  1. Ammonia48%
  2. Nitrate6%
  3. Nitrite2%
  • pH 7.75 pH
  • Temperature 10.9 °C
  • Conductivity 563 µS/cm
  • Phosphate 0.036 mg/L
  • Dissolved Oxygen 10.5 mg/L
All 8 results as a table
SubstanceResultLegal limitShare of limit
pH7.75 pHNo legal limit–
Temperature10.9 °CNo legal limit–
Conductivity563 µS/cmNo legal limit–
Nitrate3.2 mg/L50 mg/L
6%
Nitrite0.012 mg/L0.5 mg/L
2%
Phosphate0.036 mg/LNo legal limit–
Dissolved Oxygen10.5 mg/LNo legal limit–
Ammonia0.24 mg/L0.5 mg/L
48%

172mg of limescale minerals in every litre

Middling hardness. Some scale, slowly

Below the point where a softener pays for itself. Descaling the kettle now and then is all most homes need.

Soft400 mg/L
Outside your tap

Your river is the Merriot Stream, rated poor

The Environment Agency rated the Merriot Stream 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 fish. 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

TA17 in short

Tap water in TA17 (Somerset) is supplied by Wessex Water in the Somerset Central zone and scores 8.1 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 21 October 2026.

  • Ammonia is the reading closest to its limit, at 48% of the 0.5 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 26th cleanest of 40 areas tested in SomersetSquarely mid-table for Somerset, between TA21 on 9.6 and TA6 on 5.9.
  • 0.9 points below the national average of 9Below the typical tested district in the UK, which is worth knowing before you choose a filter. Compare every area

Next door

BA57.9 out of 10 · 288 mg/LBA47.7 out of 10 · 288 mg/LBA78.9 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/LBA219.2 out of 10 · 285 mg/LBA209.2 out of 10 · 172 mg/L

Questions about TA17 water

Is TA17 tap water safe to drink?

Based on the latest tests, TA17 (Somerset) water scores 8.1/10, which is safe. 0 of 8 tested contaminants exceeded recommended levels. Water is supplied by Wessex Water.

What contaminants are in TA17 water?

We tested 8 contaminants in TA17 water. None exceeded recommended safe levels.

Who supplies water in TA17?

TA17 (Somerset) is supplied by Wessex Water. You can view their full profile and compliance data on our supplier page.

Is TA17 water hard or soft?

Water in TA17 (Somerset) has a hardness of 172 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.

Should I use a water filter in TA17?

TA17 water scored 8.1/10 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 TA17 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for TA17, 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 TA17?

The Environment Agency rated the Merriot Stream 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 fish. 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 TA17, 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

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