Media Queries
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org
Please Support Us
We rely on donations to fund our work. Please support us if you can
Polluted by sewage 3,371 hours in 2025
Your local MP is Simon Opher (Labour) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Stroud, 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.
We managed to raise £150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.
Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Severn Trent Water | STANLEY DOWNTON (STW) | River Frome | 33 | 461 h 6m | 19.21 |
| Severn Trent Water | STANLEY DOWNTON (STW) | River Frome | 24 | 447 h 12m | 18.62 |
| Severn Trent Water | COALEY STW (SSTO) | River Cam | 20 | 347 h 49m | 14.46 |
| Severn Trent Water | COALEY STW (SSTO) | River Cam | 31 | 339 h 14m | 14.12 |
| Severn Trent Water | WHITMINSTER - SCHOOL LANE (CSO) | River Severn | 26 | 294 h 34m | 12.25 |
| Severn Trent Water | WHITMINSTER - SCHOOL LANE (CSO) | River Severn | 21 | 290 h 9m | 12.08 |
| Severn Trent Water | CAM - DRAYCOTT (M/H 9) (CSO) | River Cam | 29 | 226 h 51m | 9.42 |
| Severn Trent Water | KINGS STANLEY - RYEFORD RD SOUTH (CSO) | River Frome | 14 | 117 h 31m | 4.88 |
| Severn Trent Water | DURSLEY - LISTERS CAR PARK (CSO) | River Ewelme | 19 | 102 h 19m | 4.25 |
| Wessex Water | WOTTON-UNDER-EDGE HACK MILL | Dyers Brook | 37 | 100 h 21m | 4.17 |
| Wessex Water | NORTH NIBLEY STORM TANK | Doverte Brook | 10 | 98 h 58m | 4.08 |
| Wessex Water | WOTTON-UNDER-EDGE HACK MILL | Dyers Brook | 20 | 90 h 58m | 3.75 |
| Severn Trent Water | WHITMINSTER - ATTWOOLS (CSO) | River Severn | 11 | 83 h 52m | 3.46 |
| Severn Trent Water | BRIMSCOMBE - CARAVAN SITE(SDC 37) (CSO) | River Frome | 4 | 70 h 3m | 2.92 |
| Wessex Water | NORTH NIBLEY STORM TANK | Doverte Brook | 7 | 50 h | 2.08 |
| Severn Trent Water | CAM - DRAYCOTT (M/H 9) (CSO) | River Cam | 7 | 41 h 47m | 1.71 |
| Severn Trent Water | STROUD - WALLBRIDGE (SSO) | River Frome | 11 | 41 h 16m | 1.71 |
| Severn Trent Water | FRAMPTON STW (SSTO) | River Severn | 25 | 37 h 59m | 1.54 |
| Severn Trent Water | STROUD - BATH ROAD (CSO) | Nailsworth Stream | 2 | 27 h 34m | 1.12 |
| Severn Trent Water | NAILSWORTH - OLD MARKET (SDC 22) (CSO) | Nailsworth Stream | 14 | 22 h 12m | 0.92 |
| Severn Trent Water | WHITMINSTER - ATTWOOLS (CSO) | River Severn | 7 | 20 h 24m | 0.83 |
| Severn Trent Water | STROUD - BATH RD IND EST (SDC 10) (CSO) | Nailsworth Stream | 20 | 18 h 21m | 0.75 |
| Severn Trent Water | STROUD - BATH RD IND EST (SDC 10) (CSO) | Nailsworth Stream | 7 | 11 h 54m | 0.46 |
| Severn Trent Water | STONEHOUSE - OCEAN BRIDGE (CSO) | River Frome | 3 | 6 h 41m | 0.25 |
| Severn Trent Water | NAILSWORTH - OLD MARKET (SDC 22) (CSO) | Nailsworth Stream | 3 | 4 h 41m | 0.17 |
| Wessex Water | WOTTON-UNDER-EDGE WATER LANE | Dyers Brook | 8 | 3 h 32m | 0.12 |
| Wessex Water | WOTTON-UNDER-EDGE OLD COACH YARD | Dyers Brook | 9 | 3 h 22m | 0.12 |
| Severn Trent Water | DURSLEY - STATION ROAD (CSO) | River Cam | 3 | 3 h 21m | 0.12 |
| Wessex Water | WOTTON-UNDER-EDGE WATER LANE | Dyers Brook | 8 | 2 h 58m | 0.08 |
| Wessex Water | WOTTON-UNDER-EDGE OLD COACH YARD | Dyers Brook | 7 | 1 h 32m | 0.04 |
| Severn Trent Water | DURSLEY - STATION ROAD (CSO) | River Cam | 1 | 1 h 14m | 0.04 |
| Severn Trent Water | STONEHOUSE - REGENT STREET (SDC4) (CSO) | River Frome | 1 | 0 h 48m | 0 |
| Severn Trent Water | STONEHOUSE - OCEAN BRIDGE (CSO) | River Frome | 1 | 0 h 45m | 0 |
| Severn Trent Water | STONEHOUSE - REGENT STREET (SDC4) (CSO) | River Frome | 0 | 0 h | 0 |
| Severn Trent Water | DURSLEY - LISTERS CAR PARK (CSO) | River Ewelme | 0 | 0 h | 0 |
| Severn Trent Water | BUSSAGE - TOADSMOOR ROAD (SDC 38) (CSO) | River Frome | 0 | 0 h | 0 |
| Severn Trent Water | STROUD - BEARDS LANE (SDC 30) (CSO) | River Frome | 0 | 0 h | 0 |
| Severn Trent Water | LEONARD STANLEY - STANLEY DOWNTON (CSO) | River Frome | 0 | 0 h | 0 |
| Wessex Water | WOTTON-UNDER-EDGE BRICKFIELDS | Dyers Brook | 0 | 0 h | 0 |
| Wessex Water | BERKELEY PARK VIEW ROAD | Berkeley Pill | 0 | 0 h | 0 |
| Severn Trent Water | STROUD - SLAD RD/SPRINGFIELD RD (CSO) | Slad Brook | 0 | 0 h | 0 |
| Severn Trent Water | STROUD - BATH ROAD (CSO) | Nailsworth Stream | 0 | 0 h | 0 |
| Severn Trent Water | KINGS STANLEY - RYEFORD RD SOUTH (CSO) | River Frome | 0 | 0 h | 0 |
| Severn Trent Water | WOODCHESTER - BATH RD/STATION RD (CSO) | Nailsworth Stream | 0 | 0 h | 0 |
| Severn Trent Water | BRIMSCOMBE - CARAVAN SITE(SDC 37) (CSO) | River Frome | 0 | 0 h | 0 |
| Wessex Water | WOTTON-UNDER-EDGE BRICKFIELDS | Dyers Brook | 0 | 0 h | 0 |
| Severn Trent Water | FRAMPTON STW (SSTO) | River Severn | 0 | 0 h | 0 |
| Severn Trent Water | STROUD - WALLBRIDGE (SSO) | River Frome | 0 | 0 h | 0 |
| Severn Trent Water | STROUD - GANNICOX ROAD X (SDC 55) (CSO) | Painswick Stream | 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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org