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Marsiandwr polluted by sewage 11 times in 2023 - lasting 37 hours

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Contains OS Data © Crown copyright & database right 2021-2023
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Totals for Marsiandwr in 2023
1 Sites polluted by Dwr Cymru Welsh Water
11 sewage dumps
37 h duration
That's 1.54 days. 0.9 times a month, over the year
Constituencies along Marsiandwr

Pollution Summary 2023

Here are all the reported sewage overflow totals for Marsiandwr 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 Marsiandwr TAI TREVOR PS LLANNERCHYMOR 11 37 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.

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