Chichester was polluted by sewage 1,130 times in 2023
lasting 20,546 hours - that's 2.38 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 Chichester in 2023
14 Sites polluted by Southern Water
1,130 sewage dumps
20,546 h duration
That's 2.38 years! On average 3.1 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Chichester 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 17 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 %
Southern Water River Lavant LAVANT WWTW 286 6,542 99.7
Southern Water Chichester Harbour CHICHESTER WWTW 227 3,939 99
Southern Water Chichester Harbour Channel BOSHAM WWTW 105 1,762 99.7
Southern Water Pagham Rife PAGHAM WASTEWATER TREATMENT WORKS 89 1,705 99.5
Southern Water Aldingbourne Rife TANGMERE WASTEWATER TREATMENT WORKS 77 1,442 99.7
Southern Water Broad Rife SIDLESHAM WWTW 84 1,397 99.7
Southern Water Chichester Hbr Via Little Deep THORNHAM WWTW 78 1,147 99.7
Southern Water Ham Brook CSO BREAKERS YARD NUTBOURNE 55 857 99.7
Southern Water Pagham Rife NORTH MUNDHAM WPS (PAGHAM ROAD) 40 682 99.7
Southern Water Chichester Harbour TAYLORS LANE BOSHAM, WWPS 32 504 99.7
Southern Water Chichester Harbour MAIN ROAD FISHBOURNE CSO 29 278 99.6
Southern Water To Chichester Harbour CHIDHAM LANE SPS CHIDHAM 18 185 99.8
Southern Water Bremere Rife MAIN ROAD HUNSTON CEO 9 98 99.7
Southern Water English Channel EAST BEACH ROAD SELSEY CSO 1 0 54
Southern Water River Ems LUMLEY ROAD PUMPING STATION 0 0 100
Southern Water English Channel CHURCH ROAD SELSEY CSO 0 0 53.3
Southern Water Ham Brook SCHOOL LANE PS 0 0 99.7

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.