Tap water in TA15, SomersetToo few tap tests to call it.Slightly hard.
Supplied by Wessex Water. 9 substances, latest on 26 October 2026. These are river and groundwater samples near TA15, not tests of treated tap water, so treat the score as a rough guide.
9.2 / 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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Households concerned about PFAS and heavy metals
Waterdrop 10UA Under Sink
£70typical price
High-volume under-sink filtration without RO complexity
BRITA Marella XL + MAXTRA PRO
£25typical price
Basic chlorine and taste improvement on a budget
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What's in a glass of TA15 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 8% of it. 3 of 3 substances used under a quarter of theirs.
- Ammonia8%
- Nitrate8%
- Nitrite8%
- pH 7.73 pH
- Temperature 12.4 °C
- Conductivity 757 µS/cm
- Phosphate 0.18 mg/L
- Dissolved Oxygen 6.98 mg/L
- Zinc 0.0054 mg/L
All 9 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| pH | 7.73 pH | No legal limit | – |
| Temperature | 12.4 °C | No legal limit | – |
| Conductivity | 757 µS/cm | No legal limit | – |
| Ammonia | 0.04 mg/L | 0.5 mg/L | 8% |
| Nitrate | 3.8 mg/L | 50 mg/L | 8% |
| Nitrite | 0.038 mg/L | 0.5 mg/L | 8% |
| Phosphate | 0.18 mg/L | No legal limit | – |
| Dissolved Oxygen | 6.98 mg/L | No legal limit | – |
| Zinc | 0.0054 mg/L | No legal limit | – |
143mg 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.
Your river is the Wellhams Brook, rated moderate
The Environment Agency rated the Wellhams Brook 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
TA15 in short
Tap water in TA15 (Somerset) is supplied by Wessex Water in the Somerset Central zone and scores 9.2 out of 10, against an England and Wales average of 9.0. None of the 9 tested substances came close to a limit. The latest sample is from 26 October 2026.
- 12th cleanest of 40 areas tested in SomersetOnly 11 areas in Somerset scored higher. The best is TA21 on 9.6.
- Nothing tested came within 40% of its legal limitThe highest was Ammonia at 8% of the 0.5 mg/L maximum. See every reading
- Moderately hard water at 143 mg/LSome scale over time in TA15, but not enough to justify a softener for most homes. How hardness is measured
Questions about TA15 water
Is TA15 tap water safe to drink?
Based on the latest tests, TA15 (Somerset) water scores 9.2/10, which is safe. 0 of 9 tested contaminants exceeded recommended levels. Water is supplied by Wessex Water.
What contaminants are in TA15 water?
We tested 9 contaminants in TA15 water. None exceeded recommended safe levels.
Who supplies water in TA15?
TA15 (Somerset) is supplied by Wessex Water. You can view their full profile and compliance data on our supplier page.
Is TA15 water hard or soft?
Water in TA15 (Somerset) has a hardness of 143 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.
Should I use a water filter in TA15?
TA15 water scored 9.2/10 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 TA15 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for TA15, 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 TA15?
The Environment Agency rated the Wellhams Brook 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 TA15, which is treated before it reaches homes.
Keep reading
- Is UK Tap Water Safe?Everything you need to know about tap water safety in the UK
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- How to Test Your Tap WaterFrom DIY strips to professional lab analysis
- Best Water Filter Jug UKBRITA vs ZeroWater vs the rest, tested against real data
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