Cardiff North - Live Sewage

Polluted by sewage 698 hours in 2026 so far..

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Which Year?

Select Another Constituency

Select the constituency from the drop-down
โœ” means we have live data (๐‘ฅ if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Cardiff North so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

Take Action

Your local MP is Anna McMorrin (Labour) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Cardiff North, 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
We need your support!

We managed to raise ยฃ150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.

Donate Now

Totals so far

Company CSO ID Overflow Days Total Duration (hours) Total Duration (days)
Dwr Cymru Welsh Water 8c32d9d7a399bd703e6be84047d42838041d9b16397b5ad6eec765054aff30ce 24 366 h 15.25
Dwr Cymru Welsh Water daa333693fe6753c133b607b26f677a25c68af9cf9f35d810bb0df5b5c17143f 34 317 h 43m 13.21
Dwr Cymru Welsh Water 61f52a2e4eef8e179e827523adbc2584e9bddd6644168496170dece4441ede53 6 5 h 57m 0.21
Dwr Cymru Welsh Water cae951777770da410c4035d0b67b1a6f26c980be21d5980ecaf6e92b16226e41 4 3 h 44m 0.12
Dwr Cymru Welsh Water 00c8e69462512c4c4a031f7a48b666360566170e000cf0e082ee7c722566d84a 3 3 h 14m 0.12
Dwr Cymru Welsh Water c6485ba8767c32f6588b93826c5be030faae1834bfb7e0b6d57288cd8a56e147 2 1 h 58m 0.04
Dwr Cymru Welsh Water ffcded26fba53cf8c284012e7a5c7f0d6e0f1b66dd194e8bddf9863ba23464b2 0 0 h 0
Dwr Cymru Welsh Water 797d5ae2ba9370173b86a86811873f9dec4891018f37d358b4c88d702e82b2c0 0 0 h 0
Dwr Cymru Welsh Water 9760adc36b1f172ad4bcdf5ff86a70d32903ec00dcd595691f2ddcb9a61429ec 0 0 h 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. 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.