River Porter from Source to River Sheaf sewage map and spill data

15 storm overflows listed in the 2025 annual return name this water. All are operated by Yorkshire Water. Check the latest company report for each outlet below.

15
Outlet records: 237
Spills in 2025: 556
Recorded hours: 15
Linked to a live feed

Annual figures describe the whole of 2025, not today.

Official waterbody record ↗How spills are counted Search the national map

Outlets on River Porter from Source to River Sheaf

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 15 outlets

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Belgrave Road West/CSO
Yorkshire Water · Tributary of Porter Brook
Current status unknown
2025 annual record:0spills0hours

Brocco Bank/No 2 CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:8spills7.3hours
Brookhouse Hill/CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:4spills27.8hours
Broomgrove Road/CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:11spills8.8hours
Ecclesall Road/CSO
Yorkshire Water · River Porter
Current status unknown
2025 annual record:25spills31hours
Endcliffe Park/CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:19spills44.5hours
Endcliffe Vale Road/2 CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:0spills0hours
Hangingwater Road/CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:55spills180hours
Riverdale Road/No 2 CSO
Yorkshire Water · Oak Brook
Current status unknown
2025 annual record:10spills9hours
Slayleigh Lane/CSO
Yorkshire Water · Porter Brook
Current status unknown
2025 annual record:32spills68.8hours

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.

1
Hangingwater Road/CSO
Yorkshire Water
55spills
2
Stalker Walk/No 2 CSO
Yorkshire Water
42spills
3
Slayleigh Lane/CSO
Yorkshire Water
32spills
4
Whiteley Woods/CSO
Yorkshire Water
27spills
5
Ecclesall Road/CSO
Yorkshire Water
25spills

Spills over time

The median outlet on River Porter from Source to River Sheaf recorded 10 spills in 2025, against 11 across England.

13 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 2 recorded more spills, 9 fewer and 2 the same. Together they went from 234 to 170 spills, a fall of 27%.

Largest rises from 2024 to 2025

Broomgrove Road/CSO9 → 11
Slayleigh Lane/CSO31 → 32

Year	Outlets with a count	Total spills	Median per outlet	England median
2025	15	237	10	11
2024	15	248	9	19
2023	14	308	13.5	20
2022	13	280	21	13
2021	12	322	27	19
2020	13	536	17	18

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 River Porter from Source to River Sheaf

15 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.

Belgrave Road West/CSOTributary of Porter Brook · 0 spills in 2025
Brocco Bank/No 2 CSOPorter Brook · 8 spills in 2025
Brookhouse Hill/CSOPorter Brook · 4 spills in 2025
Broomgrove Road/CSOPorter Brook · 11 spills in 2025
Ecclesall Road/CSORiver Porter · 25 spills in 2025
Endcliffe Park/CSOPorter Brook · 19 spills in 2025
Endcliffe Vale Road/2 CSOPorter Brook · 0 spills in 2025
Hangingwater Road/CSOPorter Brook · 55 spills in 2025
Riverdale Road/No 2 CSOOak Brook · 10 spills in 2025
Slayleigh Lane/CSOPorter Brook · 32 spills in 2025
Snaithing Lane/CSOTributary of Porter Brook · 0 spills in 2025
Snaithing Park Road/CSOTributary of Porter Brook · 0 spills in 2025
Stalker Walk/No 2 CSOPorter Brook · 42 spills in 2025
Stumperlowe Cres Road/CSOPorter Brook · 4 spills in 2025
Whiteley Woods/CSOPorter Brook · 27 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: GB104027057760. The official waterbody record is a source lookup; its classification is not imported here.

All sources How the data works Report pollution

Questions about River Porter from Source to River Sheaf

Which outlets are linked to River Porter from Source to River Sheaf?: The source links 15 outlet records to waterbody GB104027057760. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for River Porter from Source to River Sheaf?: 15 records report 237 spills in 2025 and 556 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 River Porter from Source to River Sheaf?: Yorkshire Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on River Porter from Source to River Sheaf are linked to a live feed?: 15 of the 15 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 River Porter from Source to River Sheaf?: Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if River Porter from Source to River Sheaf is safe?: No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.