About Live ThameSafe Spill Map

Proactive, speedy and informative sewage risk assessments for Thames River users.

The traffic light shows how likely sewage from storm overflows is on your stretch of the Thames, now and for the next 7 days. It is a model estimate with stated uncertainty, not a water test. EDM monitors indicate, not confirm, spills. Check official bathing-water advice before entering the water.

How it works — method, units and every setting

Data and credits

• Storm overflow status: Thames Water EDM open data
• This uses Environment Agency flood and river level data from the real-time data API (Beta)
• Weather data by Open-Meteo.com (CC BY 4.0)
• Contains ADMIRALTY® Tidal Data © Crown copyright
• © Environment Agency EDM returns
• Contains OS data © Crown copyright and database right (OS Open Rivers)
• Clubs and place search: © OpenStreetMap contributors (ODbL), searched with Photon by komoot
• Postcodes and place names: postcodes.io; contains OS data © Crown copyright and database right (OS Open Names, Code-Point Open)
• Public sightings are unverified reports

Embed on your club's website

Paste this code into your website (most site builders have an "Embed" or "HTML" block). It always shows the live status for this stretch.