Mid Dorset and North Poole was polluted by sewage 515 times in 2024
lasting 3,742 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
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✔ means we have experimental daily data since 2023
Live data for Mid Dorset and North Poole in 2025
So far this year (as of Apr 16, 2025, 6:15 PM) there has been 1,088 hours of sewage overflows
Totals for Mid Dorset and North Poole in 2024
25 Sites polluted by Wessex Water
515 sewage dumps
3,742 h duration
That's 5.2 months. On average 1.4 times a day
Change Over Time
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Daily Data
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Mid Dorset and North Poole, 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.
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Mid Dorset and North Poole in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 0 of the total 29 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Wessex Water River Stour WIMBORNE STW 72 1,092 100
Wessex Water Sherford River BULBURY LANE PUMPING STATION 64 704 100
Wessex Water River Stour CORFE MULLEN WWTW 55 506 100
Wessex Water Lytchett Bay LYTCHETT MINSTER STW 28 305 100
Wessex Water River Frome KINGS ARMS PS, STOBOROUGH 31 195 100
Wessex Water Uddens Water GAUNTS COMMON STW 15 145 100
Wessex Water Lytchett Bay MOORLAND WAY PUMPING STATION 31 142 100
Wessex Water Uddens Water HOLT SEWAGE TREATMENT WORKS 18 113 99.8
Wessex Water Rushcombe Stream RUSHCOMBE BOTTOM PUMPING STATION 31 90 99.8
Wessex Water Tidal River Piddle WAREHAM WASTEWATER TREATMENT WORKS 26 78 100
Wessex Water River Stour PARDY'S HILL PS 18 69 97.5
Wessex Water Lytchett Bay SANDY LANE PS 26 67 99.9
Wessex Water Freshwater WOOD LANE PS 24 65 100
Wessex Water Uddens Water PILFORD HEATH PUMPING STATION 26 51 99.6
Wessex Water River Frome STOBOROUGH RIDGE PUMPING STATION 10 39 100
Wessex Water River Frome SOUTH EAST PUMPING STATION 12 19 100
Wessex Water River Stour CANFORD MAIN PUMPING STATION 6 18 100
Wessex Water River Stour BROOK ROAD PUMPING STATION 4 10 100
Wessex Water River Stour FAIRVIEW PUMPING STATION 4 10 95.4
Wessex Water River Frome WAREHAM COMBINED SEWER OVERFLOW 5 6 100
Wessex Water Sherford River GLEBE ROAD PUMPING STATION 4 5 91.7
Wessex Water River Piddle SANDFORD LANE PUMPING STATION 1 1 100
Wessex Water Hatch Pond Stream CANFORD HEATH PUMPING STATION 1 1 100
Wessex Water River Allen POOLE ROAD PUMPING STATION 1 0 96.4
Wessex Water Knighton Stream PUMPING STATION AT MAGNA ROAD 2 0 99.8
Wessex Water Sherford River BLACKHEATH WWTW 0 0 99.7
Wessex Water Poole Harbour HOLTON HEATH WW PUMPING STATION 0 0 100
Wessex Water River Piddle WEST MILL CRESCENT PUMPING STATION 0 0 100
Wessex Water Sherford River COCK AND BOTTLE PUMPING STATION 0 0 98

Data Sources & Accuracy

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. This 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.