According to TapWater.uk's analysis, Exeter scores 9.3/10 for drinking water quality in 2026. Water is supplied by South West Water and has been tested for 16 contaminants across 4 postcode districts.
9.3 / 10
4 areas tested · 0 flagged · UK average 9.0
Yes, Exeter tap water is safe to drink. Based on 4 areas tested, Exeter has an average water quality score of 9.3/10 (above the UK average of 9.0/10). No contaminants were found above recommended levels. Water is supplied by South West Water. South West Water supplies Exeter from Wimbleball and Roadford reservoirs on Exmoor and Dartmoor.
67mg of limescale minerals in every litre, on average across Exeter
From 56 mg/L in EX4 to 71 mg/L in EX1. Hard starts at 180, very hard at 250.
Main water supplier: South West Water (4 postcodes)
None of the 3 rivers and waters that Exeter drains into is rated good by the Environment Agency. All of them fail the chemical test, as every river in England does, because of long-lasting pollutants such as mercury and PFOS. This describes the rivers, not your tap water.
| River or water | Ecological health | Postcode districts |
|---|---|---|
| Exe (Creedy to Estuary) | Moderate | EX2, EX4 |
| Lower Clyst | Moderate | EX3 |
| North Brook (East Devon) | Moderate | EX1 |
Environment Agency classification, 2025. River health across England
Taste, chlorine and hardness bother people even where the water passes its tests. These are the three fixes our readers pick most: a jug for drinking water, a shower filter, and a reverse osmosis unit that needs no plumbing. Check your own postcode above to see which one your water needs.
The jug for cleaner drinking water
ZeroWater 12-Cup Ready-Pour
Jug Filter · NSF/ANSI 53, NSF/ANSI 401
Typical price
£40approx.
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For dry skin and hair after a shower
Jolie Filtered Showerhead
Shower Filter
Typical price
£85approx.
Affiliate link: we may earn a commission at no extra cost to you.
Reverse osmosis without a plumber
Osmio Zero 2.0 Countertop RO
Reverse Osmosis
Typical price
£495approx.
Affiliate link: we may earn a commission at no extra cost to you.
Affiliate link: we may earn a commission at no extra cost to you. How recommendations are funded
Yes, Exeter tap water is generally safe to drink. Across 4 areas tested, the average water quality score is 9.3/10. South West Water supplies Exeter from Wimbleball and Roadford reservoirs on Exmoor and Dartmoor.
Yes, you can drink tap water in Exeter. It is regulated to UK drinking water standards, and across 4 tested areas the average water quality score is 9.3/10. Enter your postcode for the readings in your exact area.
No contaminants were flagged above recommended levels across Exeter. All tested areas passed on the parameters measured.
Water in Exeter has an average hardness of 67 mg/L CaCO₃, which is classified as moderately soft. It ranges from 56 mg/L in EX4 to 71 mg/L in EX1. This is a moderate hardness level.
The areas with the best water quality in Exeter are EX2 (9.5/10), EX1 (9.4/10), EX4 (9.4/10).
Water in Exeter is supplied by South West Water. South West Water supplies Exeter from Wimbleball and Roadford reservoirs on Exmoor and Dartmoor.
No PFAS (forever chemicals) have been detected in any of the 4 areas tested in Exeter.
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<script src="https://www.tapwater.uk/widget.js" async></script>Get a detailed water quality report for your exact area in Exeter.
Based on water quality data from 4 postcode districts in Exeter. Data from your water company via the Stream Water Data Portal and the Environment Agency. See our methodology for how scores are calculated.