It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry, then sign the petition to bring water back to public ownership.

Conwy Bay polluted by sewage 184 times in 2025 - lasting 606 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
Totals for Conwy Bay in 2025
2 Sites polluted by Dwr Cymru Welsh Water
184 sewage dumps
606 h duration
That's 3.61 weeks. 3.5 times a week, on average
Constituencies along Conwy Bay
Places along Conwy Bay

Pollution Summary 2025

Here are all the reported sewage overflow totals for Conwy Bay in 2025. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water Conwy Bay DALE ROAD STORM SPS LLANDUDNO 167 504 99.8
Dwr Cymru Welsh Water Conwy Bay WEST SHORE PS ABBEY ROAD LLANDUDNO 17 102 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. Live sewage data from Stream Water API

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.