Cheltenham Sewage Overflow Status
Live storm overflow status for the River Chelt and its tributary brooks, sourced from Severn Trent Water's Event Duration Monitors.
- 12 overflows within 4 miles
- 0 spilling now
- 2026-09-05 most recent spill
About the Sewage Overflow Data
Severn Trent Water fits an Event Duration Monitor (EDM) to each storm overflow, recording when it starts and stops discharging untreated wastewater into a watercourse during heavy rainfall — this is a normal, permitted part of how the sewer network avoids backing up, not necessarily a sign of a fault. The table below shows near-real-time EDM status for the overflows on the River Chelt and the brooks that feed it, checked every two hours.
This tracks discharge activity, not chemical water quality (nitrates, bacteria levels and so on) — see our river water quality page for that. For the wider picture on river and surface-water flooding in Cheltenham, see our flood warnings page.
Map
● Overflows discharging now are highlighted on the map; the rest use the standard pin.
Overflow Status
Frequently Asked Questions
How Many Storm Overflows Are near Cheltenham?
- 12 within 4 miles of the town centre, and none were discharging when this page was last updated.
What Is a Storm Overflow?
- A release point that lets the sewer network discharge diluted wastewater into a river during heavy rain, so that sewers don't back up into homes and streets. An Event Duration Monitor records when each one starts and stops.
Can I See Past Spills?
- Yes. The sewage spill history logs every spill since logging began, with monthly totals for each river and brook.
About This Data
Data from Water UK National Storm Overflow Hub (Severn Trent Water EDM feed). Last updated 14 October 2026, checked every two hours.