Sleek Burn / Hepscott Burn Source to Tidal Limit sewage map and spill data
6 storm overflows listed in the 2025 annual return name this water. All are operated by Northumbrian Water. Check the latest company report for each outlet below.
- 6
- Outlet records
- 103
- Spills in 2025
- 387
- Recorded hours
- 6
- Linked to a live feed
Annual figures describe the whole of 2025, not today.
Outlets on Sleek Burn / Hepscott Burn Source to Tidal Limit
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- Briardale CSOCurrent status unknown
Northumbrian Water · Unnamed Tributary Sleek Burn
2025 annual record:2spills0.5hours - Hepscott Sewage Treatment WorksCurrent status unknown
Northumbrian Water · Hepscott Burn
2025 annual record:17spills30hours - Nedderton CSOCurrent status unknown
Northumbrian Water · Green Letch
2025 annual record:9spills2.7hours - Welwyn Factory CSOCurrent status unknown
Northumbrian Water · Sleekburn
2025 annual record:29spills95.8hours - West Sleekburn Farm CSOCurrent status unknown
Northumbrian Water · Sleek Burn
2025 annual record:30spills232.4hours - Willow Bridge CSOCurrent status unknown
Northumbrian Water · The Sleek Burn
2025 annual record:16spills25.7hours
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.
- 1West Sleekburn Farm CSO30spills
Northumbrian Water
- 2Welwyn Factory CSO29spills
Northumbrian Water
- 3Hepscott Sewage Treatment Works17spills
Northumbrian Water
- 4Willow Bridge CSO16spills
Northumbrian Water
- 5Nedderton CSO9spills
Northumbrian Water
Spills over time
The median outlet on Sleek Burn / Hepscott Burn Source to Tidal Limit recorded 16.5 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 166 to 103 spills, a fall of 38%.
Largest rises from 2024 to 2025
- Welwyn Factory CSO25 → 29
| Year | Outlets with a count | Total spills | Median per outlet | England median |
|---|---|---|---|---|
| 2025 | 6 | 103 | 16.5 | 11 |
| 2024 | 6 | 166 | 25.5 | 19 |
| 2023 | 1 | 45 | 45 | 20 |
| 2022 | 1 | 43 | 43 | 13 |
| 2021 | 1 | 42 | 42 | 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 Sleek Burn / Hepscott Burn Source to Tidal Limit
6 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- Briardale CSOUnnamed Tributary Sleek Burn · 2 spills in 2025
- Hepscott Sewage Treatment WorksHepscott Burn · 17 spills in 2025
- Nedderton CSOGreen Letch · 9 spills in 2025
- Welwyn Factory CSOSleekburn · 29 spills in 2025
- West Sleekburn Farm CSOSleek Burn · 30 spills in 2025
- Willow Bridge CSOThe Sleek Burn · 16 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: GB103022076230. The official waterbody record is a source lookup; its classification is not imported here.
Questions about Sleek Burn / Hepscott Burn Source to Tidal Limit
- Which outlets are linked to Sleek Burn / Hepscott Burn Source to Tidal Limit?
- The source links 6 outlet records to waterbody GB103022076230. The link comes from the annual return; it does not model where a discharge travelled.
- How many spills were recorded for Sleek Burn / Hepscott Burn Source to Tidal Limit?
- 6 records report 103 spills in 2025 and 387 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 Sleek Burn / Hepscott Burn Source to Tidal Limit?
- Northumbrian Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
- Which outlets on Sleek Burn / Hepscott Burn Source to Tidal Limit 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 Sleek Burn / Hepscott Burn Source to Tidal Limit?
- Every record with a monitor operation figure shows 90% or more for 2025.
- Does this show if Sleek Burn / Hepscott Burn Source to Tidal Limit is safe?
- No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.