Wessex Water

was responsible for 21,878 sewage overflows in 2022
On average 59.9 times a day

These lasted for 129,957 hours (That's 15.04 years!) - in 994 different locations across their service area

Worst Locations Wessex Water

1. SHREWTON WATER RECYCLING CENTRE

Salisbury polluted for 2,969 hours, into River Till

139 incidents

That's 4.12 months.

2.7 times a week, on average

2. GREAT BADMINTON WWTW

Thornbury and Yate polluted for 2,428 hours, into Luckington Brook

111 incidents

That's 3.37 months.

2.1 times a week, on average

3. HURDCOTT WASTEWATER TREATMENT WORKS

Salisbury polluted for 2,346 hours, into River Bourne

149 incidents

That's 3.26 months.

2.9 times a week, on average

4. SPANIEL'S BRIDGE PUMPING STATION

Devizes polluted for 1,784 hours, into River Avon

96 incidents

That's 2.48 months.

1.8 times a week, on average

5. BUTLEIGH SEWAGE TREATMENT WORKS

Somerton and Frome polluted for 1,770 hours, into River Brue

106 incidents

That's 2.46 months.

2 times a week, on average

6. BUCKLAND NEWTON WRC

West Dorset polluted for 1,690 hours, into River Lydden

107 incidents

That's 2.35 months.

2.1 times a week, on average

Water Companies

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.