Southwark, England
Tap Water Quality in SE1
Southwark— 2026 Report
Based on 6 regulated parameters
6
Parameters Tested
0
Flagged
Thames Water
Water Supplier
Apr 2026
Last Updated
According to Environment Agency monitoring data, tap water in SE1 (Southwark) is supplied by Thames Water. Based on the latest data (last sampled 2001-01-21), 6 parameters were tested with 0 exceeding recommended levels. The overall water quality score for SE1 is 9.8/10.
Water quality in SE1 is excellent. All tested parameters are well within regulatory limits.
What's in your water
All readings from the latest monitoring data for your supply zone.
| Contaminant | Your Level | UK Limit | WHO Guideline | Status |
|---|---|---|---|---|
| pH Source: EA Water Quality Archive | 8.1 pH | — | — | OK |
| Temperature Source: EA Water Quality Archive | 6.1 °C | — | — | OK |
| Nitrate Source: EA Water Quality Archive | 2.37 mg/L | 50 mg/L | 50 mg/L | OK |
| Phosphate Source: EA Water Quality Archive | 0.137 mg/L | — | — | OK |
| Ammonia Source: EA Water Quality Archive | 0.031 mg/L | 0.5 mg/L | — | OK |
| Dissolved Oxygen Source: EA Water Quality Archive | 99.7 mg/L | — | — | OK |
Water quality trend
SE1quality score, 2020–2026
Water quality has improved over the past 6 years.
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