Severn Trent Water

was responsible for at least 60,253 sewage overflows in 2023
On average 165.1 times a day

These lasted for 440,446 hours (That's 50.98 years!) - in 2,071 different locations across their service area

2023 - Worst Locations Severn Trent Water

1. FRAMPTON STW

Stroud polluted for 3,868 hours, into R Severn

206 incidents

That's 5.37 months.

4 times a week, on average

2. CHURCH STRETTON STW

Ludlow polluted for 3,852 hours, into Quinny Brook

177 incidents

That's 5.35 months.

3.4 times a week, on average

3. CHERINGTON STW

Stratford-on-Avon polluted for 3,557 hours, into River Stour

173 incidents

That's 4.94 months.

3.3 times a week, on average

4. BLOCKLEY SEWAGE TREATMENT WORKS

The Cotswolds polluted for 3,535 hours, into Blockley Brook

178 incidents

That's 4.91 months.

3.4 times a week, on average

5. RIDGE LANE, ANSLEY STW

North Warwickshire polluted for 3,500 hours, into Bourne Brook

241 incidents

That's 4.86 months.

4.6 times a week, on average

6. BERKSWELL SEWAGE TREATMENT WORKS

Meriden polluted for 3,157 hours, into River Blythe

169 incidents

That's 4.38 months.

3.2 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.