South Oxfordshire, England
South Oxfordshire
Your water is safe
We checked 11 things and found nothing to worry about
ExcellentYour water is safe
We checked 11 things and found nothing to worry about
ExcellentBased on environmental water monitoring, your water in RG9 (South Oxfordshire) is supplied by Thames Water. Based on the latest data (last sampled 2025-09-12), 11 things were tested with 0 exceeding recommended levels. The overall water quality score for RG9 is 9.4/10.
Last sampled 2025-09-12 · Tap water tests not yet available for Thames Water
Here’s what government tests found in water near you.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| pH | 7.95 pH | — | — | Safe |
| Temperature | 5.69 °C | — | — | Safe |
| Ammonia | 0.137 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 3.9 mg/L | 50 mg/L | 50 mg/L | Safe |
| Nitrite | 0.046 mg/L | 0.5 mg/L | 3 mg/L | Safe |
| Phosphate | 0.339 mg/L | — | — | Safe |
Source: Environment Agency
General-purpose filters for common UK tap water concerns.

Our pick for RG9
BRITA Marella XL + MAXTRA PRO
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Recommendations matched to your area's water data, not sponsorship. We may earn a commission at no extra cost to you. Affiliate disclosure · Full filter guide
Rivers, groundwater and reservoirs near RG9. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| pH | 7.95 pH | — | — | Safe |
| Temperature | 5.69 °C | — | — | Safe |
| Ammonia | 0.137 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 3.9 mg/L | 50 mg/L | 50 mg/L | Safe |
| Nitrite | 0.046 mg/L | 0.5 mg/L | 3 mg/L | Safe |
| Phosphate | 0.339 mg/L | — | — | Safe |
Source: Environment Agency
We'll email you when water quality data changes for RG9.