Menai Strait polluted by sewage 892 times in 2024 - lasting 7,865 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
Totals for Menai Strait in 2024
18 Sites polluted by Dwr Cymru Welsh Water
892 sewage dumps
7,865 h duration
That's 10.92 months. On average 2.4 times a day

Pollution Summary 2024

Here are all the reported sewage overflow totals for Menai Strait in 2024. 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 Menai Strait LLANDEGFAN (MENAI) PUMPING STATION 106 1,942 99.9
Dwr Cymru Welsh Water Menai Strait Treborth WwTW (Settled Storm) 101 1,574 100
Dwr Cymru Welsh Water Menai Strait BRYNSCIENCYN STW 81 842 99.9
Dwr Cymru Welsh Water Menai Strait BRYNSCIENCYN STW 79 823 100
Dwr Cymru Welsh Water Menai Strait PS NO 1 (FAELOG CAUSEWAY) (EMERGENC 63 460 99.9
Dwr Cymru Welsh Water Menai Strait LLYN Y FELIN PS (EMERGENCY) 33 402 99.9
Dwr Cymru Welsh Water Menai Strait Llanfair PG WwTW CSO 71 323 99.8
Dwr Cymru Welsh Water Menai Strait LLANFAES WWTW STORM TANK 41 278 99.8
Dwr Cymru Welsh Water Menai Strait PS NO 3 (SUSPENSION BRIDGE) (EMERGE 86 260 99.8
Dwr Cymru Welsh Water Menai Strait LLANFAES WWTW 31 200 99.8
Dwr Cymru Welsh Water Menai Strait ABERGWYNGREGYN PUMPING STATION 19 185 99.9
Dwr Cymru Welsh Water Menai Strait TREBORTH STW (FINAL) BANGOR 15 184 100
Dwr Cymru Welsh Water Menai Strait MOUNT FIELD P.S. BEAUMARIS , 35 165 99.9
Dwr Cymru Welsh Water Menai Strait LLANFAIR PG WWTW 68 161 100
Dwr Cymru Welsh Water Menai Strait BEACH ROAD PS BANGOR , 47 44 99.9
Dwr Cymru Welsh Water Menai Strait BRYNSCIENCYN PS 3 10 99.8
Dwr Cymru Welsh Water Menai Strait Gorad Road SPS 8 4 99.9
Dwr Cymru Welsh Water Menai Strait PS NO 2 (PORTH WRACH) (EMERGENCY) 5 2 99.8
Dwr Cymru Welsh Water Menai Strait WATERLOO PORT SEWAGE PUMPING ST 0 0 98.9

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.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.