It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry.

Chichester - Live Sewage

Polluted by sewage 9,434 hours in 2026 - That's 1.09 years so far..

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Which Year?

Select Another Constituency

Select the constituency from the drop-down
✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Chichester so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

Take Action

Your local MP is Jessica Brown-Fuller (Liberal Democrat) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK

Daily Data

Jan - 2,999 hours
Feb - 6,121 hours
Mar - 312 hours
We need your support!

Thank you so much to everyone who contributed to the site in 2025 to keep it running. We do rely on your contributions! Developing and running a website costs real money.
Please consider a one-off or small recurring donation.

Donate Now

Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Southern Water LAVANT NO.1 SSO - 115745 River Lavant 62 1,450 h 28m -
Southern Water CHICHESTER WTW 1 SSO - 115402 Chichester Harbour 52 1,175 h 40m -
Southern Water THORNHAM SSO - 115369 Chichester Hbr Via Little Deep 49 1,047 h 34m -
Southern Water BOSHAM SSO - 115735 Chichester Harbour Channel 45 921 h 25m -
Southern Water TANGMERE SSO - 115777 Aldingbourne Rife 36 822 h 10m -
Southern Water CHICHESTER WTW 2 SSO - 115401 Chichester Harbour 37 778 h 26m -
Southern Water THORNHAM INLET CEO - 115371 Chichester Hbr Via Little Deep 40 769 h 30m -
Southern Water SIDLESHAM SSO - 115807 Broad Rife 39 743 h 17m -
Southern Water PRIORS LEAZE LANE NUTBOURNE CSO - 111267 Ham Brook 28 412 h 1m -
Southern Water Unknown Unknown 35 352 h 41m -
Southern Water TAYLORS LANE BOSHAM PUMPED SSO - 116066 Chichester Harbour 21 210 h 30m -
Southern Water OLD PORTSMOUTH ROAD CSO - 111371 Chichester Harbour 20 204 h 54m -
Southern Water SUMMER LANE PAGHAM SSO - 115443 Pagham Rife 10 167 h 15m -
Southern Water MAIN ROAD HUNSTON CEO - 108280 Bremere Rife 15 155 h 53m -
Southern Water CHIDHAM CEO - 108205 To Chichester Harbour 11 101 h 13m -
Southern Water OUTSIDE 83 EAST BEACH SELSEY CEO - 115286 English Channel 10 66 h 15m -
Southern Water PAGHAM ROAD NORTH MUNDHAM CEO - 108291 Pagham Rife 24 26 h 14m -
Southern Water CHICHESTER ROAD BOGNOR CSO - 103301 Bartons Lane Ald 3 19 h 58m -
Southern Water EAST BEACH ROAD SELSEY CSO - 108220 English Channel 3 8 h 43m -
Southern Water PAGHAM ROAD NORTH MUNDHAM CEO - 108291 Pagham Rife 0 0 h -
Southern Water SCHOOL LANE NUTBOURNE CEO - 108299 Ham Brook 0 0 h -
Southern Water MAIN ROAD HUNSTON CEO - 108280 Bremere Rife 0 0 h -
Southern Water PRIORS LEAZE LANE NUTBOURNE CSO - 111267 Ham Brook 0 0 h -
Southern Water TANGMERE SSO - 115777 Aldingbourne Rife 0 0 h -
Southern Water SCHOOL LANE NUTBOURNE CEO - 108299 Ham Brook 0 0 h -
Southern Water THORNHAM SSO - 115369 Chichester Hbr Via Little Deep 0 0 h -
Southern Water OUTSIDE 83 EAST BEACH SELSEY CEO - 115286 English Channel 0 0 h -
Southern Water OLD PORTSMOUTH ROAD CSO - 111371 Chichester Harbour 0 0 h -
Southern Water SIDLESHAM SSO - 115807 Broad Rife 0 0 h -
Southern Water LAVANT NO.1 SSO - 115745 River Lavant 0 0 h -
Southern Water CHICHESTER ROAD BOGNOR CSO - 103301 Bartons Lane Ald 0 0 h -
Southern Water SUMMER LANE PAGHAM SSO - 115443 Pagham Rife 0 0 h -
Southern Water CHIDHAM CEO - 108205 To Chichester Harbour 0 0 h -
Southern Water BOSHAM SSO - 115735 Chichester Harbour Channel 0 0 h -
Southern Water Unknown Unknown 0 0 h -
Southern Water THORNHAM INLET CEO - 115371 Chichester Hbr Via Little Deep 0 0 h -
Southern Water CHICHESTER WTW 1 SSO - 115402 Chichester Harbour 0 0 h -
Southern Water CHICHESTER WTW 2 SSO - 115401 Chichester Harbour 0 0 h -

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. Live sewage data from Stream Water API

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.