Lewes

Polluted by sewage 1,588 times in 2024 lasting 18,001 hours - That's 2.08 years!

Monitoring fell below 50% in some locations so could be more

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

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✔ means we have experimental daily data since 2023

Live data for Lewes in 2025

So far this year (as of Apr 30, 2025, 9:15 AM) there has been 3,661 hours of sewage overflows - that's 0.42 years!

Totals for Lewes in 2024

27 Sites polluted by Southern Water
1,588 sewage dumps
18,001 hours duration
That's 2.08 years! On average 4.4 times a day

Change Over Time

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

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Lewes, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online
Monitoring Offline
Polluting
Potentially Polluting
Unknown
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Pollution Summary 2024

Here are all the reported sewage overflow totals for Lewes in 2024. 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 4 of the total 30 CSO locations had reporting enabled for less than half the year.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Southern Water Tidal River Ouse HAM LANE LEWES SETTLES STORM TANK 259 4,824 99.3
Southern Water Bevern Stream DITCHLING WWTW 158 2,652 92.5
Southern Water River Cuckmere THE SPOTS P.S. ALFRISTON 156 2,486 99.9
Southern Water Bulldog Sewer / Glynde Reach NEAVES LANE RINGMER WWTW 104 1,286 99.7
Southern Water New Stream Ditch WILLINGDON CEO 150 1,116 94.9
Southern Water Glynde Reach LAUGHTON CSO 81 962 96.8
Southern Water English Channel NEWHAVEN WWTW 129 869 98.6
Southern Water Unnamed Glynde Reach/Ouse RIPE WWTW 63 817 99.8
Southern Water Freshwater River UPPER DICKER SEWAGE P.S. 76 739 99.9
Southern Water Mill Ditch POLEGATE CEO 58 559 100
Southern Water Celery Sewer River Ouse KINGSTON HOLLOW WWTW 54 261 99.6
Southern Water Glynde Reach GLYNDE NORTH PUMPING STATION 28 257 99.9
Southern Water River Cuckmere BERWICK WWTW 24 255 99.9
Southern Water Mill Ditch POLEGATE NO.1 CSO LYNHOLM RD POLEGT 41 254 100
Southern Water Bevern Stream STRAWLANDS WWPS 22 157 100
Southern Water Tidal River Ouse DENTON ISLAND NEWHAVEN CSO 15 135 99.7
Southern Water Glynde Reach River Ouse GLYNDE SOUTH CEO 12 101 100
Southern Water River Ouse COURT ROAD WWPS, LEWES 82 81 99.8
Southern Water Groundwaters Via Infiltration EAST DEAN WWTW 16 38 99.4
Southern Water Wannock Mill Stream SOUTHFIELD POLEGATE CSO E'BOURNE RD 11 32 99.7
Southern Water Wannock Mill Stream WANNOCK RD WANNOCK CSO, WANNOCK 8 28 96.3
Southern Water Glynde Reach SELMESTON CROSSING S.P.S, SELMESTON 13 27 99.6
Southern Water English Channel CLIFF END WWPS SEAFORD 18 23 99.9
Southern Water Tidal River Ouse SEAFORD BAY OUTFALL 6 19 91.7
Southern Water River Ouse FORT ROAD WASTEWATER PS 2 7 99.7
Southern Water Unnamed Herrings Stream SOUTH STREET DITCHLING CSO 1 1 13.2
Southern Water Freshwater River HIGH STREET POLEGATE 1 0 25.5
Southern Water Willingdon Upper Sewer OXENDEN GARDENS WILLINGDON CSO 0 0 48.1
Southern Water English Channel At Seaford Bay MARTELLO ROAD SEAFORD CSO 0 0 98.6
Southern Water River Ouse BEACH ROAD CSO, NEWHAVEN 0 0 5.6

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.