Relief Channel sewage map and spill data
6 storm overflows listed in the 2025 annual return name this water. All are operated by Anglian Water. Check the latest company report for each outlet below.
- 6
- Outlet records
- 60
- Spills in 2025
- 205
- Recorded hours
- 6
- Linked to a live feed
Annual figures describe the whole of 2025, not today.
Outlets on Relief Channel
Filter by the latest company report. The map follows the filters.
Filters apply to the map and list. Recent stops need a current report and a recorded stop time. They do not show whether water is safe.
Showing 6 of 6 outlets
Open full map- Downham Market STWCurrent status unknown
Anglian Water · Tributary Flood Relief Channel
2025 annual record:13spills128.4hours - Downham Market STWCurrent status unknown
Anglian Water · Tributary Flood Relief Channel
2025 annual record:1spill9.8hours - Downham Market-Denis Snzm SSOCurrent status unknown
Anglian Water · unnamed tributary Relief Chann
2025 annual record:0spills0hours - Downham Market-Railway SSOCurrent status unknown
Anglian Water · Flood Relief Channel Sur W Sew
2025 annual record:32spills57hours - Downham Market-The Hythe SpCurrent status unknown
Anglian Water · the Relief Channel
2025 annual record:14spills10hours - Downham Mkt-Lynn Road OvCurrent status unknown
Anglian Water · unnamed tributary of Relief Ch
2025 annual record:0spills0hours
No outlets match these filters.
Most recorded spills in 2025
The highest 2025 counts among these outlets. A count is events, not volume or harm. Equal counts share a rank.
- 1Downham Market-Railway SSO32spills
Anglian Water
- 2Downham Market-The Hythe Sp14spills
Anglian Water
- 3Downham Market STW13spills
Anglian Water
- 4Downham Market STW1spills
Anglian Water
- 5Downham Market-Denis Snzm SSO0spills
Anglian Water
Spills over time
The median outlet on Relief Channel recorded 7 spills in 2025, against 11 across England.
6 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 5 fewer and 0 the same. Together they went from 170 to 60 spills, a fall of 65%.
Largest rises from 2024 to 2025
| Year | Outlets with a count | Total spills | Median per outlet | England median |
|---|---|---|---|---|
| 2025 | 6 | 60 | 7 | 11 |
| 2024 | 6 | 170 | 22 | 19 |
| 2023 | 5 | 150 | 35 | 20 |
| 2022 | 4 | 73 | 14.5 | 13 |
| 2021 | 4 | 75 | 16 | 19 |
Earlier returns list fewer of these outlets, so totals are not comparable between years. The median per outlet and the like-for-like change are fairer comparisons. Counts are events, not volume.
All outlet records on Relief Channel
6 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- Downham Market STWTributary Flood Relief Channel · 13 spills in 2025
- Downham Market STWTributary Flood Relief Channel · 1 spill in 2025
- Downham Market-Denis Snzm SSOunnamed tributary Relief Chann · 0 spills in 2025
- Downham Market-Railway SSOFlood Relief Channel Sur W Sew · 32 spills in 2025
- Downham Market-The Hythe Spthe Relief Channel · 14 spills in 2025
- Downham Mkt-Lynn Road Ovunnamed tributary of Relief Ch · 0 spills in 2025
Sources and dates
Outlet locations, waterbody links and spill figures come from the Environment Agency 2025 event duration monitoring annual return. The latest company reports come from each operator’s live feed and carry their own dates. Waterbody ID: GB205033047665. The official waterbody record is a source lookup; its classification is not imported here.
Questions about Relief Channel
- Which outlets are linked to Relief Channel?
- The source links 6 outlet records to waterbody GB205033047665. The link comes from the annual return; it does not model where a discharge travelled.
- How many spills were recorded for Relief Channel?
- 6 records report 60 spills in 2025 and 205 recorded hours. All listed records have a usable count. Outlets can discharge at the same time, so the hours are not the time the whole water was affected.
- Who is responsible for the outlets on Relief Channel?
- Anglian Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
- Which outlets on Relief Channel are linked to a live feed?
- 6 of the 6 records are matched to a monitor in a company live feed. A link does not mean the monitor is working now. Use the status filters above to see the latest report for each outlet, with its date. The rest show annual figures only.
- How complete is the monitoring for Relief Channel?
- Every record with a monitor operation figure shows 90% or more for 2025.
- Does this show if Relief Channel is safe?
- No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.