Southampton, England
Southampton
Your water is safe
We checked 20 things and found 1 worth knowing about
GoodYour water is safe
We checked 20 things and found 1 worth knowing about
GoodBased on drinking water tests, your water in SO18 (Southampton) is supplied by Southern Water. Based on the latest data (last sampled 2025-12-06), 20 things were tested with 1 exceeding recommended levels. The overall water quality score for SO18 is 8.3/10.
Last sampled 2025-12-06 · 685 samples
Results from drinking water tests in Southampton.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Lead | 0.0245 mg/L | 0.01 mg/L | 0.01 mg/L | Over limit |
Source: Stream Water Data Portal
1 contaminant flagged in SO18. These filters are matched to what was found in your water.

Our pick for SO18
Waterdrop G3P600 Reverse Osmosis
Under-Sink · NSF/ANSI 58, NSF/ANSI 372
The Waterdrop G3P600 Reverse Osmosis is certified to remove Lead, which was flagged in SO18. 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 SO18. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| pH | 7.5 pH | — | — | Safe |
| Conductivity | 390 µS/cm | — | — | Safe |
| Temperature | 4.7 °C | — | — | Safe |
| Ammonia | 0.11 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 4.33 mg/L | 50 mg/L | 50 mg/L | Safe |
| Nitrite | 0.0177 mg/L | 0.5 mg/L | 3 mg/L | Safe |
Source: Environment Agency
We'll email you when water quality data changes for SO18.