Garston and Halewood was polluted by sewage 265 times in 2023
lasting 2,191 hours
- but monitoring was disabled in some locations, so could be more

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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 Garston and Halewood in 2023
4 Sites polluted by United Utilities
265 sewage dumps
2,191 h duration
That's 3.04 months. 5.1 times a week, on average
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Garston and Halewood 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 5 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 Ditton Brook HUYTON WASTEWATER TREATMENT WORKS 167 1,787 99.45
United Utilities Halewood Brook WOOLTON STW 69 256 99.85
United Utilities Ditton Brook ASH LANE CSO 18 134 99.6
United Utilities Mersey Estuary GRASSENDALE COMBINED SEWER OVERFLOW 11 13 99.7
United Utilities Ditton Brook LOWER RD PS 0 0 0

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.