Montgomeryshire was polluted by sewage 1,054 times in 2023
lasting 15,680 hours - that's 1.81 years!

© OpenStreetMap contributors
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 Montgomeryshire in 2023
11 Sites polluted by Dwr Cymru Welsh Water
1,054 sewage dumps
15,680 h duration
That's 1.81 years! On average 2.9 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Montgomeryshire 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 0 of the total 11 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water River Laen CSO at Llanbrynmair STW Llanbrynmair 291 5,811 100
Dwr Cymru Welsh Water River Twymyn Commins Coch Pumping Station CSO 195 4,422 99.9
Dwr Cymru Welsh Water River Wye Llangurig P.S. - Overflow 151 2,738 100
Dwr Cymru Welsh Water River Twymyn LLAN LLANBRYNMAIR PS CSO 59 827 99.9
Dwr Cymru Welsh Water River Dyfi MACHYNLLETH WWTW (STORM OUTFALL) 96 742 100
Dwr Cymru Welsh Water Garsiwn Ditch MACHYNLLETH STW CSO 73 486 100
Dwr Cymru Welsh Water River Aber Glesyrch Ceinws SPS 39 466 99.9
Dwr Cymru Welsh Water Garsiwn River Dovey Machynlleth - Doll Street CSO 93 158 98.3
Dwr Cymru Welsh Water Un-Named Watercourse Machynlleth - Popular Road CSO 38 17 98.8
Dwr Cymru Welsh Water Garsiwn Ditch Heol Penrallt CSO 17 8 100
Dwr Cymru Welsh Water Garsiwn Ditch MACHYNLLETH STW 2 0 93.1

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.