Sewage spills in Norwich
Includes overflow assets operated by Anglian Water within 5 km of the town centre.
Total spills
850
Duration
3,477hrs
Infrastructure
29
Based on the latest Environment Agency storm overflow data
What does 3,477 hours mean?
Combined across all 29 sites in Norwich, that is equivalent to sewage being discharged continuously for 144.9 days non-stop into local waterways (if all reported hours ran back-to-back). In practice, spills are separate events spread across the year.
Top 10 sites by spill count
Sites by severity
29sites
- Critical (>100 spills)2
- High (50–100 spills)4
- Moderate (10–49 spills)11
- Low (<10 spills)12
Site details
Counts use the EA 12–24 hour reporting method for the most recent year with spills, per site. Environment Agency EDM dataset.
| Site name | Water company | Spill count | Duration (hours) |
|---|---|---|---|
| Norwich Riverside CSO | Anglian Water | 192 | 1,686 |
| Norwich Sandy Lane CSO | Anglian Water | 109 | 222 |
| Elm Hill Overflow | Anglian Water | 79 | 617 |
| Norwich Lower Close (ferry Ln) CSO | Anglian Water | 76 | 64 |
| Norwich - Ketts Hill CSO | Anglian Water | 61 | 95 |
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DWI lab-style readings, gauges and hardness for this area.
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