Polluted by sewage 7,099 hours in 2025
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Plymouth Moor View, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| South West Water | FORDER VALLEY ROAD_CSO_PLYMOUTH | Leigham Mill Stream | 73 | 888 h 12m | 37 |
| South West Water | FORDER VALLEY ROAD_CSO_PLYMOUTH | Leigham Mill Stream | 40 | 746 h 23m | 31.08 |
| South West Water | ERNESETTLE STW_SO_PLYMOUTH | River Tamar | 40 | 695 h 7m | 28.96 |
| South West Water | ERNESETTLE STW_SSO_PLYMOUTH | River Tamar | 50 | 585 h 9m | 24.38 |
| South West Water | ERNESETTLE STW_SSO_PLYMOUTH | River Tamar | 29 | 581 h 16m | 24.21 |
| South West Water | R/O QUARRY COTTAGES_CSO_HONICKNOWLE LN | Honicknowle Stream | 41 | 572 h 12m | 23.83 |
| South West Water | ERNESETTLE STW_SO_PLYMOUTH | River Tamar | 65 | 488 h 13m | 20.33 |
| South West Water | GLENHOLT SPS_PSCSOEO_PLYMOUTH | River Plym | 28 | 393 h 33m | 16.38 |
| South West Water | OPP XXX WOLSELEY RD_CSO_PLYMOUTH | Weston Mill Stream | 20 | 310 h 32m | 12.92 |
| South West Water | OPP XXX WOLSELEY RD_CSO_PLYMOUTH | Weston Mill Stream | 23 | 279 h 31m | 11.62 |
| South West Water | GLENHOLT SPS_PSCSOEO_PLYMOUTH | River Plym | 38 | 201 h 45m | 8.38 |
| South West Water | WHITLEIGH WOOD_CSO_PLYMOUTH | Tamerton Lake | 24 | 150 h 55m | 6.25 |
| South West Water | KINTERBURY CREEK_PSCSOEO_PLYMOUTH | River Tamar Viasws | 13 | 149 h 34m | 6.21 |
| South West Water | WESTON MILL CEMETERY_CSO_PLYMOUTH | Weston Mill Stream | 16 | 139 h 17m | 5.79 |
| South West Water | HAYES END FARM_CSO_PLYMOUTH | Tamerton Stream | 7 | 128 h 31m | 5.33 |
| South West Water | STATION ROAD SPS_PSCSOEO_PLYMOUTH | Tamerton Lake | 24 | 120 h 35m | 5 |
| South West Water | KINTERBURY CREEK_PSCSOEO_PLYMOUTH | River Tamar Viasws | 11 | 96 h 57m | 4 |
| South West Water | SOUTHWAY DRIVE_CSO_PLYMOUTH | Southway Stream | 18 | 96 h 13m | 4 |
| South West Water | SOUTHWAY DRIVE_CSO_PLYMOUTH | Southway Stream | 25 | 84 h 37m | 3.5 |
| South West Water | WHITLEIGH WOOD_CSO_PLYMOUTH | Tamerton Lake | 21 | 74 h 16m | 3.08 |
| South West Water | R/O QUARRY COTTAGES_CSO_HONICKNOWLE LN | Honicknowle Stream | 13 | 63 h 38m | 2.62 |
| South West Water | STATION ROAD SPS_PSCSOEO_PLYMOUTH | Tamerton Lake | 12 | 52 h 49m | 2.17 |
| South West Water | GARRICK CLOSE_CSO_PLYMOUTH | Honicknowle Stream | 15 | 34 h 27m | 1.42 |
| South West Water | ERNESETTLE LANE_CSO_PLYMOUTH | River Tamar Via Sws | 27 | 34 h 8m | 1.42 |
| South West Water | HAYES END FARM_CSO_PLYMOUTH | Tamerton Stream | 5 | 27 h 14m | 1.12 |
| South West Water | WESTON MILL CEMETERY_CSO_PLYMOUTH | Weston Mill Stream | 4 | 18 h 4m | 0.75 |
| South West Water | FLORENCE STREET_CSO_PLYMOUTH | Weston Mill Lake | 13 | 14 h 36m | 0.58 |
| South West Water | GARRICK CLOSE_CSO_PLYMOUTH | Honicknowle Stream | 19 | 13 h 22m | 0.54 |
| South West Water | HONICKNOWLE LANE_CSO_PLYMOUTH | Ham Brook | 9 | 12 h | 0.5 |
| South West Water | HONICKNOWLE LANE_CSO_PLYMOUTH | Ham Brook | 12 | 9 h 30m | 0.38 |
| South West Water | FLORENCE STREET_CSO_PLYMOUTH | Weston Mill Lake | 19 | 8 h 59m | 0.33 |
| South West Water | ERNESETTLE LANE_CSO_PLYMOUTH | River Tamar Via Sws | 26 | 5 h 47m | 0.21 |
| South West Water | OFF HAM LN, HAM WOOD_CSO_PLYMOUTH | Ham Brook | 4 | 2 h 28m | 0.08 |
| South West Water | OFF HAM LN, HAM WOOD_CSO_PLYMOUTH | Ham Brook | 2 | 2 h 18m | 0.08 |
| South West Water | R/O X DENHAM CLOSE_CSO_PLYMOUTH | Honicknowle Stream | 3 | 2 h 9m | 0.08 |
| South West Water | RIVERSIDE_PSCSOEO_PLYMOUTH | River Tamar | 4 | 1 h 57m | 0.04 |
| South West Water | MOWHAY ROAD_CSO_PLYMOUTH | Honicknowle Stream | 1 | 1 h 52m | 0.04 |
| South West Water | RIVERSIDE_PSCSOEO_PLYMOUTH | River Tamar | 3 | 1 h 41m | 0.04 |
| South West Water | CENTRAL RESERVATION_CSO_PLYMOUTH | Weston Mill Creek Via Wtr Crse | 2 | 1 h 40m | 0.04 |
| South West Water | ST. PANCRAS AVENUE_CSO_PLYMOUTH | Ham Brook | 4 | 1 h 32m | 0.04 |
| South West Water | R/O 615 WOLSELEY ROAD_CSO_PLYMOUTH | Kinterbury Creek Via W/Crse | 1 | 1 h 31m | 0.04 |
| South West Water | SHIRLEY GARDENS_CSO_PLYMOUTH | Ham Brook | 2 | 1 h 22m | 0.04 |
| South West Water | MOWHAY ROAD_CSO_PLYMOUTH | Honicknowle Stream | 2 | 0 h 58m | 0 |
| South West Water | CROWNHILL RD_CSO_PLYMOUTH | Honicknowle Stream Via Sws | 1 | 0 h 43m | 0 |
| South West Water | CROWNHILL ROAD_CSO_PLYMOUTH | Honicknowle Stream | 1 | 0 h 41m | 0 |
| South West Water | MAUNSELL CLOSE_CSO_PLYMOUTH | Weston Mill Lake Via W'Course | 1 | 0 h 40m | 0 |
| South West Water | HAM WOODS HAM LANE_CSO_PLYMOUTH | Ham Brook | 1 | 0 h 12m | 0 |
| South West Water | TAMAR WAY_CSO_PLYMOUTH | Honicknowle Stream | 1 | 0 h 8m | 0 |
| South West Water | CROWNHILL RD_CSO_PLYMOUTH | Honicknowle Stream Via Sws | 0 | 0 h | 0 |
| South West Water | R/O 615 WOLSELEY ROAD_CSO_PLYMOUTH | Kinterbury Creek Via W/Crse | 0 | 0 h | 0 |
| South West Water | R/O X DENHAM CLOSE_CSO_PLYMOUTH | Honicknowle Stream | 0 | 0 h | 0 |
| South West Water | TAMAR WAY_CSO_PLYMOUTH | Honicknowle Stream | 0 | 0 h | 0 |
| South West Water | SHIRLEY GARDENS_CSO_PLYMOUTH | Ham Brook | 0 | 0 h | 0 |
| South West Water | CROWNHILL ROAD_CSO_PLYMOUTH | Honicknowle Stream | 0 | 0 h | 0 |
| South West Water | CENTRAL RESERVATION_CSO_PLYMOUTH | Weston Mill Creek Via Wtr Crse | 0 | 0 h | 0 |
| South West Water | ST. PANCRAS AVENUE_CSO_PLYMOUTH | Ham Brook | 0 | 0 h | 0 |
| South West Water | HAM WOODS HAM LANE_CSO_PLYMOUTH | Ham Brook | 0 | 0 h | 0 |
| South West Water | MAUNSELL CLOSE_CSO_PLYMOUTH | Weston Mill Lake Via W'Course | 0 | 0 h | 0 |
EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water
Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API
Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.
This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.