West Lancashire was polluted by sewage 618 times in 2024
lasting 3,445 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 West Lancashire in 2025
So far this year (as of Apr 16, 2025, 6:15 PM) there has been 914 hours of sewage overflows
Totals for West Lancashire in 2024
14 Sites polluted by United Utilities
618 sewage dumps
3,445 h duration
That's 4.78 months. On average 1.7 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 West Lancashire, 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 West Lancashire 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 14 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 %
United Utilities River Douglas WIGAN WASTEWATER TREATMENT WORKS 45 829 99.5
United Utilities Castle Brook WESTHEAD WWTW 84 596 94.8
United Utilities River Douglas MILL LANE CSO 49201 130 592 99.4
United Utilities Simonswood Brook BARROWNOOK WWTW 80 476 99.9
United Utilities Boathouse Sluice BURSCOUGH WWTW 25 302 100
United Utilities Hey Cop Drain, River Alt HILLHOUSE WWTW 56 214 100
United Utilities River Tawd Via Sws 194 ORMSKIRK ROAD CSO 69 156 99.2
United Utilities River Douglas SKELMERSDALE WWTW SKELM 36 130 100
United Utilities River Tawd Via Sws NEAR TAWD VALE INN CSO 39 69 93.5
United Utilities Bickerstaffe Brook BICKERSTAFFE W.WATER PUMP STATION 12 40 100
United Utilities Pond Rivtawd Via Sws O/S 1 TEVERSHAM CSO 20 22 99.4
United Utilities River Tawd NR FIRE STN ORMSKIRK RD 11 8 85.5
United Utilities Eller Brook Via Sws DERBY STREET CSO (49200) 10 7 100
United Utilities Fine Janes Brook AINSDALE WASTEWATER TREATMENT WORKS 1 0 99.9

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.