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Sefton Central was polluted by sewage 978 times in 2023
lasting 3,413 hours
- but monitoring was disabled in some locations, so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Sefton Central in 2023
16 Sites polluted by United Utilities
978 sewage dumps
3,413 h duration
That's 4.74 months. On average 2.7 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Sefton Central in 2023. 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 1 of the total 18 CSO locations had reporting enabled for less than half the year, of which 1 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities River Mersey Estuary OS 49 ST ANDREWS ROAD CSO 38028 114 747 99.5
United Utilities River Alt ST MICHAELS ROAD/MANOR ROAD CSO 124 738 99.5
United Utilities River Mersey Estuary OPPOSITE 53 MOOR LANE CSO 382G6 132 365 98.2
United Utilities River Mersey Estuary THE BYPASS/LPOOL RD JUNCT CSO 382UR 96 364 100
United Utilities River Alt FORMBY WASTEWATER TREATMENT WORKS 54 312 99.9
United Utilities River Mersey Estuary O/S51 MOORLAND AVE CSO 382G6 114 290 98.1
United Utilities Mersey Estuary ST ANDREWS ROAD/ST MICHAEL CSO 78 211 99.7
United Utilities Hunts Brook THORNTON PUMPING STATION THRTN 21 105 100
United Utilities River Mersey Estuary COLLEGE ROAD ESHE ROAD CSO 38109 53 83 100
United Utilities River Mersey Estuary DIBBS LANE CSO 381RT 58 70 99.7
United Utilities River Alt MELLING WWTW 8 36 99.9
United Utilities River Mersey Estuary O/S 107 LIVERPOOL ROAD CSO 382D3 30 33 97.7
United Utilities Sandy Brook OPPOSITE NO.36 CARR LANE CSO 20 27 99.2
United Utilities River Alt Estuarine Waters RIVERSIDE ROAD PUMPING STATION 49 9 99.5
United Utilities River Mersey Estuary OUTSIDE 16 CORONATION RD CSO 381PQ 17 8 100
United Utilities Moor Hey Brook BRIDGE RD JCT COPY LANE 10 7 81
United Utilities Maghull Brook REAR 23 LIVERPOOL ROAD NORTH CSO 0 0 0
United Utilities River Mersey Estuary DIBBS LANE CSO 381RT 0 0 93.4

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.