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Surrey Heath, England
Surrey Heath
Your water is safe
We checked 22 things and found 1 worth knowing about
GoodYour water is safe
We checked 22 things and found 1 worth knowing about
GoodWater hardness: 138 mg/L (moderately hard)
Moderate hardness — unlikely to cause issues
Tap water in GU15 (Surrey Heath, Surrey Heath) is supplied by Thames Water and scored 8.8 out of 10 for safety based on 22 tested parameters. 1 contaminant exceeded recommended safe levels: Nitrite. Data is from 74 samples collected up to 2025-12-31, sourced from Thames Water via the Stream Water Data Portal.
Last sampled 2025-12-31 · 74 samples
Results from drinking water tests in Surrey Heath.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Nitrite | 0.38 mg/L | 0.5 mg/L | 3 mg/L | Watch |
Source: Stream Water Data Portal
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Rivers, groundwater and reservoirs near GU15. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Ammonia | 0.398 mg/L | 0.5 mg/L | — | Watch |
Source: Environment Agency
We'll email you when water quality data changes for GU15.