Tap water in GU14, RushmoorToo few tap tests to call it.Slightly hard.
Supplied by Southern Water. 14 substances, latest on 28 October 2026. These are river and groundwater samples near GU14, not tests of treated tap water, so treat the score as a rough guide.
8.2 / 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
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What's in a glass of GU14 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.
Iron came closest to a limit, at 65% of it. 6 of 7 substances used under a quarter of theirs.
- Iron65%
- Nitrate24%
- Nitrite22%
- Nickel19%
- Ammonia18%
- Chromium<1%
- Copper<1%
- pH 7.24 pH
- Temperature 12.8 °C
- Conductivity 662 µS/cm
- Phosphate 0.26 mg/L
- Dissolved Oxygen 6.92 mg/L
- Zinc 0.013 mg/L
All 14 results as a table
| Substance | Result | Legal limit | Share of limit |
|---|---|---|---|
| pH | 7.24 pH | No legal limit | – |
| Temperature | 12.8 °C | No legal limit | – |
| Conductivity | 662 µS/cm | No legal limit | – |
| Ammonia | 0.091 mg/L | 0.5 mg/L | 18% |
| Nitrate | 12 mg/L | 50 mg/L | 24% |
| Nitrite | 0.11 mg/L | 0.5 mg/L | 22% |
| Phosphate | 0.26 mg/L | No legal limit | – |
| Dissolved Oxygen | 6.92 mg/L | No legal limit | – |
| Hardness (as CaCO3) | 221 mg/L | No legal limit | – |
| Zinc | 0.013 mg/L | No legal limit | – |
| Nickel | 0.0037 mg/L | 0.02 mg/L | 19% |
| Copper | 0.00008 mg/L | 2 mg/L | <1% |
| Iron | 0.13 mg/L | 0.2 mg/L | 65% |
| Chromium | 0.00019 mg/L | 0.05 mg/L | <1% |
154mg of limescale minerals in every litre, typical for the GU area. GU14 has no reading of its own.
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 Cove Brook, rated poor
The Environment Agency rated the Cove Brook 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 insects and other small river life, fish and dissolved oxygen. 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
GU14 in short
Tap water in GU14 (Rushmoor) is supplied by Southern Water in the Rushmoor Central zone and scores 8.2 out of 10, against an England and Wales average of 9.0. None of the 14 tested substances came close to a limit. The latest sample is from 28 October 2026.
- Iron is the reading closest to its limit, at 65% of the 0.2 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
- 0.8 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
- Moderately hard water at 154 mg/LSome scale over time across the GU postcode area, but not enough to justify a softener for most homes. How hardness is measured
Questions about GU14 water
Is GU14 tap water safe to drink?
Based on the latest tests, GU14 (Rushmoor) water scores 8.2/10, which is safe. 0 of 14 tested contaminants exceeded recommended levels. Water is supplied by Southern Water.
What contaminants are in GU14 water?
We tested 14 contaminants in GU14 water. None exceeded recommended safe levels.
Who supplies water in GU14?
GU14 (Rushmoor) is supplied by Southern Water. You can view their full profile and compliance data on our supplier page.
Is GU14 water hard or soft?
No hardness reading has been published for GU14 itself. Across the GU postcode area the typical value is 154 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.
Should I use a water filter in GU14?
GU14 water scored 8.2/10 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 GU14 water?
No PFAS (forever chemicals) result is attached to the tap-water tests for GU14, 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 GU14?
The Environment Agency rated the Cove Brook 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 insects and other small river life, fish and dissolved oxygen. 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 GU14, 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
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