Tees from Percy Beck to River Greta sewage map and spill data
10 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.
- 10
- Outlet records
- 127
- Spills in 2025
- 324
- Recorded hours
- 10
- Linked to a live feed
Annual figures describe the whole of 2025, not today.
Outlets on Tees from Percy Beck to River Greta
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 10 of 10 outlets
Open full map- Barnard Castle STWCurrent status unknown
Northumbrian Water · River Tees
2025 annual record:6spills18.7hours - Barnard Castle STWCurrent status unknown
Northumbrian Water · River Tees
2025 annual record:16spills23.3hours - Barnard Castle STWCurrent status unknown
Northumbrian Water · River Tees
2025 annual record:23spills118hours - Boldron STWCurrent status unknown
Northumbrian Water · Manifold Beck, Tributary of
2025 annual record:19spills85.1hours - Demesnes Mill CSOCurrent status unknown
Northumbrian Water · River Tees
2025 annual record:20spills25.8hours - Demesnes Mill No 3 CSOCurrent status unknown
Northumbrian Water · Tees
2025 annual record:0spills0hours - Galgate CSOCurrent status unknown
Northumbrian Water · River Tees
2025 annual record:14spills14.8hours - Gray Lane Storm Sewage OverflowCurrent status unknown
Northumbrian Water · Tees
2025 annual record:22spills19.6hours - Rear Of Raby Road Storm Sewage OverCurrent status unknown
Northumbrian Water · Tees
2025 annual record:1spill3.4hours - The Lendings (Startforth) SPSCurrent status unknown
Northumbrian Water · River Tees
2025 annual record:6spills15.2hours
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.
- 1Barnard Castle STW23spills
Northumbrian Water
- 2Gray Lane Storm Sewage Overflow22spills
Northumbrian Water
- 3Demesnes Mill CSO20spills
Northumbrian Water
- 4Boldron STW19spills
Northumbrian Water
- 5Barnard Castle STW16spills
Northumbrian Water
Spills over time
The median outlet on Tees from Percy Beck to River Greta recorded 15 spills in 2025, against 11 across England.
10 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 0 recorded more spills, 10 fewer and 0 the same. Together they went from 313 to 127 spills, a fall of 59%.
| Year | Outlets with a count | Total spills | Median per outlet | England median |
|---|---|---|---|---|
| 2025 | 10 | 127 | 15 | 11 |
| 2024 | 10 | 313 | 24.5 | 19 |
| 2023 | 1 | 264 | 264 | 20 |
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 Tees from Percy Beck to River Greta
10 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- Barnard Castle STWRiver Tees · 6 spills in 2025
- Barnard Castle STWRiver Tees · 16 spills in 2025
- Barnard Castle STWRiver Tees · 23 spills in 2025
- Boldron STWManifold Beck, Tributary of · 19 spills in 2025
- Demesnes Mill CSORiver Tees · 20 spills in 2025
- Demesnes Mill No 3 CSOTees · 0 spills in 2025
- Galgate CSORiver Tees · 14 spills in 2025
- Gray Lane Storm Sewage OverflowTees · 22 spills in 2025
- Rear Of Raby Road Storm Sewage OverTees · 1 spill in 2025
- The Lendings (Startforth) SPSRiver Tees · 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: GB103025072512. The official waterbody record is a source lookup; its classification is not imported here.
Questions about Tees from Percy Beck to River Greta
- Which outlets are linked to Tees from Percy Beck to River Greta?
- The source links 10 outlet records to waterbody GB103025072512. The link comes from the annual return; it does not model where a discharge travelled.
- How many spills were recorded for Tees from Percy Beck to River Greta?
- 10 records report 127 spills in 2025 and 324 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 Tees from Percy Beck to River Greta?
- 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 Tees from Percy Beck to River Greta are linked to a live feed?
- 10 of the 10 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 Tees from Percy Beck to River Greta?
- Every record with a monitor operation figure shows 90% or more for 2025.
- Does this show if Tees from Percy Beck to River Greta is safe?
- No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.