Sewage spills in Manchester
Includes overflow assets operated by United Utilities within 5 km of the town centre.
Total spills
1,889
Duration
6,171hrs
Infrastructure
108
Based on the latest Environment Agency storm overflow data
What does 6,171 hours mean?
Combined across all 108 sites in Manchester, that is equivalent to sewage being discharged continuously for 257.1 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
108sites
- Critical (>100 spills)2
- High (50–100 spills)4
- Moderate (10–49 spills)46
- Low (<10 spills)56
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) |
|---|---|---|---|
| Mad Hatter Pub | United Utilities | 150 | 2,787 |
| Rochdale Rd/collyhurst | United Utilities | 112 | 541 |
| Salford Wastewater Treatment Works | United Utilities | 92 | 239 |
| Bridge Street Bow Street CSO | United Utilities | 70 | 142 |
| Great Clowes CSO 37048 Sal0080 | United Utilities | 69 | 66 |
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