Slea sewage map and spill data
8 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.
- 8
- Outlet records
- 127
- Spills in 2025
- 926
- Recorded hours
- 8
- Linked to a live feed
Annual figures describe the whole of 2025, not today.
Outlets on Slea
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 8 of 8 outlets
Open full map- Anwick-River La TpsCurrent status unknown
Anglian Water · Unnamed Tributary Anwick Soke
2025 annual record:0spills0hours - CSO and EO at Sleaford - St. Giles Avenue SPCurrent status unknown
Anglian Water · Dyke to River Slea
2025 annual record:1spill0.3hours - Sleaford Mh 53 Carr StCurrent status unknown
Anglian Water · Old River Slea
2025 annual record:1spill0.3hours - Sleaford WrcCurrent status unknown
Anglian Water · Old River Slea
2025 annual record:40spills218.5hours - Sleaford WrcCurrent status unknown
Anglian Water · Old River Slea
2025 annual record:8spills25hours - Sleaford-Queen St/Grantha RdCurrent status unknown
Anglian Water · Unknown Trib. Nine Foot Drain
2025 annual record:4spills5.5hours - South Rauceby Water Recycling CentreCurrent status unknown
Anglian Water · The Beck to a Trib of River Sl
2025 annual record:71spills671.8hours - Wilsford STWCurrent status unknown
Anglian Water · Ditch to Swallow Hole
2025 annual record:2spills5hours
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.
- 1South Rauceby Water Recycling Centre71spills
Anglian Water
- 2Sleaford Wrc40spills
Anglian Water
- 3Sleaford Wrc8spills
Anglian Water
- 4Sleaford-Queen St/Grantha Rd4spills
Anglian Water
- 5Wilsford STW2spills
Anglian Water
Spills over time
The median outlet on Slea recorded 3 spills in 2025, against 11 across England.
8 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 3 recorded more spills, 4 fewer and 1 the same. Together they went from 232 to 127 spills, a fall of 45%.
Largest rises from 2024 to 2025
- CSO and EO at Sleaford - St. Giles Avenue SP0 → 1
- Sleaford Mh 53 Carr St0 → 1
- Sleaford-Queen St/Grantha Rd3 → 4
| Year | Outlets with a count | Total spills | Median per outlet | England median |
|---|---|---|---|---|
| 2025 | 8 | 127 | 3 | 11 |
| 2024 | 8 | 232 | 2.5 | 19 |
| 2023 | 8 | 114 | 5 | 20 |
| 2022 | 3 | 41 | 4 | 13 |
| 2021 | 2 | 49 | 24.5 | 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 Slea
8 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- Anwick-River La TpsUnnamed Tributary Anwick Soke · 0 spills in 2025
- CSO and EO at Sleaford - St. Giles Avenue SPDyke to River Slea · 1 spill in 2025
- Sleaford Mh 53 Carr StOld River Slea · 1 spill in 2025
- Sleaford WrcOld River Slea · 40 spills in 2025
- Sleaford WrcOld River Slea · 8 spills in 2025
- Sleaford-Queen St/Grantha RdUnknown Trib. Nine Foot Drain · 4 spills in 2025
- South Rauceby Water Recycling CentreThe Beck to a Trib of River Sl · 71 spills in 2025
- Wilsford STWDitch to Swallow Hole · 2 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: GB105030056670. The official waterbody record is a source lookup; its classification is not imported here.
Questions about Slea
- Which outlets are linked to Slea?
- The source links 8 outlet records to waterbody GB105030056670. The link comes from the annual return; it does not model where a discharge travelled.
- How many spills were recorded for Slea?
- 8 records report 127 spills in 2025 and 926 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 Slea?
- 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 Slea are linked to a live feed?
- 8 of the 8 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 Slea?
- Every record with a monitor operation figure shows 90% or more for 2025.
- Does this show if Slea is safe?
- No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.