Tap water in TA7, SomersetToo few tap tests to call it.Slightly hard.
Supplied by Wessex Water. 8 substances, latest on 28 July 2021. These are river and groundwater samples near TA7, 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

ZeroWater 12-Cup Ready-Pour
£40typical price
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
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 TA7 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 20% of it. 3 of 3 substances used under a quarter of theirs.
- Ammonia20%
- Nitrite3%
- Nitrate<1%
- pH 7.87 pH
- Temperature 21 °C
- Conductivity 938 µS/cm
- Phosphate 0.41 mg/L
- Dissolved Oxygen 5.16 mg/L
All 8 results as a table
124mg 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 King's Sedgemoor Drain - Henley Sluice to mouth, rated moderate
The Environment Agency rated the King's Sedgemoor Drain - Henley Sluice to mouth as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by 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
TA7 in short
Tap water in TA7 (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 8 tested substances came close to a limit. The latest sample is from 28 July 2021.
- The newest sample here is from July 2021That is over 5 years old, so treat this page as a record of past results rather than today's tap water.
- 13th cleanest of 40 areas tested in SomersetOnly 12 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 20% of the 0.5 mg/L maximum. See every reading
Questions about TA7 water
Is TA7 tap water safe to drink?
Based on the latest tests, TA7 (Somerset) water scores 9.2/10, which is safe. 0 of 8 tested contaminants exceeded recommended levels. Water is supplied by Wessex Water.
What contaminants are in TA7 water?
We tested 8 contaminants in TA7 water. None exceeded recommended safe levels.
Who supplies water in TA7?
TA7 (Somerset) is supplied by Wessex Water. You can view their full profile and compliance data on our supplier page.
Is TA7 water hard or soft?
Water in TA7 (Somerset) has a hardness of 124 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.
Should I use a water filter in TA7?
TA7 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 TA7 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for TA7, 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 TA7?
The Environment Agency rated the King's Sedgemoor Drain - Henley Sluice to mouth as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by 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 TA7, 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
- Best Water Filters UKEvery filter type compared on what it actually removes
- 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
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 TA7.