Test Valley, England
Test Valley
Your water is safe
We checked 18 things and found 1 worth knowing about
ExcellentYour water is safe
We checked 18 things and found 1 worth knowing about
ExcellentBased on drinking water tests, your water in RG28 (Test Valley) is supplied by Southern Water. Based on the latest data (last sampled 2025-11-03), 18 things were tested with 1 exceeding recommended levels. The overall water quality score for RG28 is 9.1/10.
Last sampled 2025-11-03 · 321 samples
Results from drinking water tests in Test Valley.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Nitrate | 39 mg/L | 50 mg/L | 50 mg/L | Watch |
Source: Stream Water Data Portal
1 contaminant flagged in RG28. These filters are matched to what was found in your water.

Our pick for RG28
Waterdrop G3P600 Reverse Osmosis
Under-Sink · NSF/ANSI 58, NSF/ANSI 372
The Waterdrop G3P600 Reverse Osmosis is certified to remove Nitrate, which was flagged in RG28. Fits under your kitchen sink for filtered water on tap.
Removes from your water
£399
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 RG28. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| pH | 7.95 pH | — | — | Safe |
| Conductivity | 610 µS/cm | — | — | Safe |
| Temperature | 7 °C | — | — | Safe |
| Nitrate | 6.89 mg/L | 50 mg/L | 50 mg/L | Safe |
| Nitrite | 0.0104 mg/L | 0.5 mg/L | 3 mg/L | Safe |
| Phosphate | 0.122 mg/L | — | — | Safe |
Source: Environment Agency
We'll email you when water quality data changes for RG28.