Derwent US Bassenthwaite Lake sewage map and spill data
6 storm overflows listed in the 2025 annual return name this water. All are operated by United Utilities. Check the latest company report for each outlet below.
- 6
- Outlet records
- 210
- Spills in 2025
- 1,530
- Recorded hours
- 6
- Linked to a live feed
Annual figures describe the whole of 2025, not today.
Outlets on Derwent US Bassenthwaite Lake
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- A591/Bus Shelter CSOCurrent status unknown
United Utilities · Applethwaite Gill
2025 annual record:72spills551.2hours - KESWICK WwTWCurrent status unknown
United Utilities · River Derwent
2025 annual record:77spills907hours - Lattrigg CloseCurrent status unknown
United Utilities · River Greta
2025 annual record:1spill0.1hours - Penrith RoadCurrent status unknown
United Utilities · River Greta
2025 annual record:0spills0hours - Rawnsley Hall PS (AKA Greta Grove)Current status unknown
United Utilities · The River Greta
2025 annual record:54spills62.6hours - Thick Riggs CSOCurrent status unknown
United Utilities · River Derwent
2025 annual record:6spills9.3hours
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.
- 1KESWICK WwTW77spills
United Utilities
- 2A591/Bus Shelter CSO72spills
United Utilities
- 3Rawnsley Hall PS (AKA Greta Grove)54spills
United Utilities
- 4Thick Riggs CSO6spills
United Utilities
- 5Lattrigg Close1spills
United Utilities
Spills over time
The median outlet on Derwent US Bassenthwaite Lake recorded 30 spills in 2025, against 11 across England.
5 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 2 recorded more spills, 3 fewer and 0 the same. Together they went from 206 to 210 spills, a rise of 2%.
Largest rises from 2024 to 2025
- Thick Riggs CSO0 → 6
- A591/Bus Shelter CSO68 → 72
| Year | Outlets with a count | Total spills | Median per outlet | England median |
|---|---|---|---|---|
| 2025 | 6 | 210 | 30 | 11 |
| 2024 | 6 | 206 | 30 | 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 Derwent US Bassenthwaite Lake
6 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- A591/Bus Shelter CSOApplethwaite Gill · 72 spills in 2025
- KESWICK WwTWRiver Derwent · 77 spills in 2025
- Lattrigg CloseRiver Greta · 1 spill in 2025
- Penrith RoadRiver Greta · 0 spills in 2025
- Rawnsley Hall PS (AKA Greta Grove)The River Greta · 54 spills in 2025
- Thick Riggs CSORiver Derwent · 6 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: GB112075073561. The official waterbody record is a source lookup; its classification is not imported here.
Questions about Derwent US Bassenthwaite Lake
- Which outlets are linked to Derwent US Bassenthwaite Lake?
- The source links 6 outlet records to waterbody GB112075073561. The link comes from the annual return; it does not model where a discharge travelled.
- How many spills were recorded for Derwent US Bassenthwaite Lake?
- 6 records report 210 spills in 2025 and 1,530 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 Derwent US Bassenthwaite Lake?
- United Utilities operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
- Which outlets on Derwent US Bassenthwaite Lake 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 Derwent US Bassenthwaite Lake?
- Every record with a monitor operation figure shows 90% or more for 2025.
- Does this show if Derwent US Bassenthwaite Lake is safe?
- No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.