Dee Estuary polluted by sewage 381 times in 2023 - lasting 1,916 hours

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
Totals for Dee Estuary in 2023
8 Sites polluted by Dwr Cymru Welsh Water
381 sewage dumps
1,916 h duration
That's 2.66 months. On average 1 times a day

Pollution Summary 2023

Here are all the reported sewage overflow totals for Dee Estuary in 2023. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water Dee Estuary NESTON PARKGATE PUMPING STATION 127 1,029 99.9
Dwr Cymru Welsh Water Dee Estuary HESWALL WASTEWATER TREATMENT WORKS 46 525 99.7
Dwr Cymru Welsh Water Dee Estuary BAGILLT EAST SPS 18 125 100
Dwr Cymru Welsh Water Dee Estuary HARP INN CSO 57 84 100
Dwr Cymru Welsh Water Dee Estuary FLINT BARDYN PS , , 70 76 100
Dwr Cymru Welsh Water Dee Estuary BAGILLT WEST SPS BAGILLT 39 61 99.7
Dwr Cymru Welsh Water Dee Estuary 5 DEE COTTAGES CSO 3 7 48.9
Dwr Cymru Welsh Water Dee Estuary GREENFIELDS DRIVE CSO 21 7 100

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.