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River Wye polluted by sewage 2,024 times in 2023 - lasting 13,853 hours

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
Totals for River Wye in 2023
36 Sites polluted by Dwr Cymru Welsh Water
2,024 sewage dumps
13,853 h duration
That's 1.6 years! On average 5.5 times a day

Pollution Summary 2023

Here are all the reported sewage overflow totals for River Wye 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 River Wye Llangurig P.S. - Overflow 151 2,738 100
Dwr Cymru Welsh Water River Wye NEWLAND SEWAGE TREATMENT WORKS 164 2,310 100
Dwr Cymru Welsh Water River Wye Builthwells WWTW CSO 134 1,661 100
Dwr Cymru Welsh Water River Wye SPS AT EARDISLEY STW 78 1,237 91.4
Dwr Cymru Welsh Water River Wye Tintern Main SPS 270 654 99.9
Dwr Cymru Welsh Water River Wye SEDBURY SEWAGE PUMPING STATION 95 577 99.9
Dwr Cymru Welsh Water River Wye Settled Storm Sewage from Monmouth WwTW 66 545 99.9
Dwr Cymru Welsh Water River Wye Storm Tanks at Rhayader STW 78 525 93.6
Dwr Cymru Welsh Water River Wye Glasbury STW Glasbury Nr Hay On Wye 47 406 94.8
Dwr Cymru Welsh Water River Wye PUMPING STATION AT MOCCAS STW 32 397 100
Dwr Cymru Welsh Water River Wye CHURCH LANE STW CHURCH ROAD 55 351 100
Dwr Cymru Welsh Water River Wye MONMOUTH STW REDBROOK ROAD MONMOUTH 24 263 99.9
Dwr Cymru Welsh Water River Wye The Strand CSO, Church Street, Builth Wells 68 261 93.7
Dwr Cymru Welsh Water River Wye CSO at Rhayader WwTW 79 248 100
Dwr Cymru Welsh Water River Wye Hay-on-Wye (Main) SPS 95 240 98.9
Dwr Cymru Welsh Water River Wye HOPE AND ANCHOR CSO 60 180 97.3
Dwr Cymru Welsh Water River Wye ST MARTINS ALLOTMENTS CSO HEREFORD 30 149 99.9
Dwr Cymru Welsh Water River Wye HOMS ROAD PUMPING STATION CSO 29 148 100
Dwr Cymru Welsh Water River Wye BELMONT ROUNDABOUT CSO 39 119 80.3
Dwr Cymru Welsh Water River Wye Monmouth 2 CSO 58 107 99.8
Dwr Cymru Welsh Water River Wye WILTON SEWAGE PUMPING STATION 13 100 96.2
Dwr Cymru Welsh Water River Wye Llyswen STW Settled Storm 25 91 91.5
Dwr Cymru Welsh Water River Wye CSO at Newbridge on Wye STW 40 91 100
Dwr Cymru Welsh Water River Wye Thornwell Road CSO 65 75 100
Dwr Cymru Welsh Water River Wye ROSS LOWER CLEEVE WWTW 28 72 99.7
Dwr Cymru Welsh Water River Wye Glasbury STW Glasbury Nr Hay On Wye 7 62 94.8
Dwr Cymru Welsh Water River Wye CSO at Welsh Street Chepstow 66 50 100
Dwr Cymru Welsh Water River Wye CSO at Rhayader Fields St. Brides Church 11 41 99.7
Dwr Cymru Welsh Water River Wye GREAT HOUGH BROOK CSO 20 27 100
Dwr Cymru Welsh Water River Wye FOWNHOPE SEWAGE TREATMENT WORKS 8 25 98.6
Dwr Cymru Welsh Water River Wye WYEBANK RD CSO 36 18 99.7
Dwr Cymru Welsh Water River Wye LYDBROOK SEWAGE TREATMENT WORKS SSO 6 17 99.9
Dwr Cymru Welsh Water River Wye CSO Llanelwedd - Scout Hut Station Road 3 17 99.8
Dwr Cymru Welsh Water River Wye EIGN 1B COMBINED SEWER OVERFLOW 9 15 100
Dwr Cymru Welsh Water River Wye North Road CSO North Rd Builth Well 11 13 100
Dwr Cymru Welsh Water River Wye Raglan Way CSO 24 8 99.9
Dwr Cymru Welsh Water River Wye CSO at Weun Chapel Park Toilets, Rhayader 0 0 99.9
Dwr Cymru Welsh Water River Wye Hay-on-Wye (Warren Close) SPS 0 0 100
Dwr Cymru Welsh Water River Wye GREAT HOUGHBROOK PS ADJACENT TO FOR 0 0 17.3
Dwr Cymru Welsh Water River Wye LOWER LYDBROOK RIVER WYE CSO 0 0 98.2
Dwr Cymru Welsh Water River Wye JOYFORD MILL PUMPING STATION 0 0 0
Dwr Cymru Welsh Water River Wye LEYMANS FIELD PS BRAEMAR GARDENS 0 0 100
Dwr Cymru Welsh Water River Wye EIGN WASTEWATER TREATMENT WORKS 0 0 0
Dwr Cymru Welsh Water River Wye GREYFRIARS BRIDGE CSO 0 0 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. 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.