Receiving watercourse
North Sea
168 monitored storm overflows on the North Sea are listed in the National Storm Overflow Hub. Operated by Anglian Water, Northumbrian Water, Southern Water and Yorkshire Water.
168
Storm overflows
0
Active right now
5
Monitors offline
2,248
Spill events · 12 months
4,233h
Recorded discharge · 12 months
10
Open discrepancies
Every monitored overflow· 168
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- AWS00664Anglian Wateroffline
- AWS01012Anglian Wateroffline
- NWL00963Northumbrian Wateroffline
- NWL00649Northumbrian Wateroffline
- SWS00552Southern Wateroffline
- YWS01483Yorkshire Waterinactive
- NWL00049Northumbrian Waterinactive
- AWS00186Anglian Waterinactive
- YWS00576Yorkshire Waterinactive
- YWS02199Yorkshire Waterinactive
- YWS01452Yorkshire Waterinactive
- NWL00241Northumbrian Waterinactive
- YWS01002Yorkshire Waterinactive
- AWS00299Anglian Waterinactive
- NWL00346Northumbrian Waterinactive
- AWS00858Anglian Waterinactive
- YWS00510Yorkshire Waterinactive
- YWS00513Yorkshire Waterinactive
- NWL00898Northumbrian Waterinactive
- NWL00940Northumbrian Waterinactive
- NWL00941Northumbrian Waterinactive
- NWL00834Northumbrian Waterinactive
- NWL00836Northumbrian Waterinactive
- NWL00835Northumbrian Waterinactive
- AWS00871Anglian Waterinactive
- AWS00012Anglian Waterinactive
- AWS00280Anglian Waterinactive
- AWS00869Anglian Waterinactive
- NWL00666Northumbrian Waterinactive
- AWS00240Anglian Waterinactive
- YWS01482Yorkshire Waterinactive
- AWS00234Anglian Waterinactive
- NWL00855Northumbrian Waterinactive
- NWL01170Northumbrian Waterinactive
- NWL01166Northumbrian Waterinactive
- NWL00842Northumbrian Waterinactive
- NWL00474Northumbrian Waterinactive
- SWS00844Southern Waterinactive
- SWS00359Southern Waterinactive
- SWS00847Southern Waterinactive
- SWS00846Southern Waterinactive
- SWS00848Southern Waterinactive
- NWL01206Northumbrian Waterinactive
- NWL00198(1)Northumbrian Waterinactive
- NWL01207Northumbrian Waterinactive
- NWL00343Northumbrian Waterinactive
- YWS00849Yorkshire Waterinactive
- NWL00212Northumbrian Waterinactive
- NWL00124Northumbrian Waterinactive
- NWL00769Northumbrian Waterinactive
- NWL01097Northumbrian Waterinactive
- NWL00930Northumbrian Waterinactive
- NWL01157Northumbrian Waterinactive
- NWL01156Northumbrian Waterinactive
- NWL01180Northumbrian Waterinactive
- AWS00870Anglian Waterinactive
- AWS01434Anglian Waterinactive
- AWS01070Anglian Waterinactive
- YWS00526Yorkshire Waterinactive
- SWS00303Southern Waterinactive
- SWS00549Southern Waterinactive
- SWS00929Southern Waterinactive
- SWS00550Southern Waterinactive
- SWS00341Southern Waterinactive
- SWS00474Southern Waterinactive
- NWL01578Northumbrian Waterinactive
- NWL00757Northumbrian Waterinactive
- NWL00703Northumbrian Waterinactive
- NWL00198(3)Northumbrian Waterinactive
- NWL00097Northumbrian Waterinactive
- NWL00174Northumbrian Waterinactive
- NWL01512Northumbrian Waterinactive
- YWS00930Yorkshire Waterinactive
- YWS01003Yorkshire Waterinactive
- YWS01374Yorkshire Waterinactive
- NWL00856Northumbrian Waterinactive
- NWL00213Northumbrian Waterinactive
- NWL01134Northumbrian Waterinactive
- NWL00048Northumbrian Waterinactive
- NWL00398Northumbrian Waterinactive
- NWL00233Northumbrian Waterinactive
- YWS00931Yorkshire Waterinactive
- YWS01144Yorkshire Waterinactive
- NWL00814Northumbrian Waterinactive
- NWL01513Northumbrian Waterinactive
- NWL00400Northumbrian Waterinactive
- NWL01579Northumbrian Waterinactive
- NWL00933Northumbrian Waterinactive
- NWL00412Northumbrian Waterinactive
- YWS01735Yorkshire Waterinactive
- YWS00512Yorkshire Waterinactive
- YWS00511Yorkshire Waterinactive
- SWS90003Southern Waterinactive
- NWL01379Northumbrian Waterinactive
- AWS00383Anglian Waterinactive
- SWS00185Southern Waterinactive
- NWL00197Northumbrian Waterinactive
- NWL01292Northumbrian Waterinactive
- AWS00279Anglian Waterinactive
- AWS01475Anglian Waterinactive
- NWL01172Northumbrian Waterinactive
- NWL00942Northumbrian Waterinactive
- YWS00583Yorkshire Waterinactive
- NWL00756Northumbrian Waterinactive
- NWL00705Northumbrian Waterinactive
- NWL00758Northumbrian Waterinactive
- NWL00646Northumbrian Waterinactive
- NWL01247Northumbrian Waterinactive
- SWS00930Southern Waterinactive
- YWS00582Yorkshire Waterinactive
- NWL00342Northumbrian Waterinactive
- NWL00739Northumbrian Waterinactive
- AWS00235Anglian Waterinactive
- NWL00841Northumbrian Waterinactive
- NWL00198(2)Northumbrian Waterinactive
- NWL00606Northumbrian Waterinactive
- NWL00959Northumbrian Waterinactive
- AWS00453Anglian Waterinactive
- AWS00238Anglian Waterinactive
- AWS00236Anglian Waterinactive
- NWL00970Northumbrian Waterinactive
- AWS01123Anglian Waterinactive
- NWL00793Northumbrian Waterinactive
- NWL01117Northumbrian Waterinactive
- NWL00715Northumbrian Waterinactive
- NWL01376Northumbrian Waterinactive
- NWL00348Northumbrian Waterinactive
- AWS00297Anglian Waterinactive
- AWS01021Anglian Waterinactive
- AWS00237Anglian Waterinactive
- NWL01076Northumbrian Waterinactive
- YWS00579Yorkshire Waterinactive
- NWL00442Northumbrian Waterinactive
- AWS00640Anglian Waterinactive
- SWS00843Southern Waterinactive
- YWS01052Yorkshire Waterinactive
- YWS01453Yorkshire Waterinactive
- SWS00957Southern Waterinactive
- AWS00241Anglian Waterinactive
- NWL00433Northumbrian Waterinactive
- NWL00964Northumbrian Waterinactive
- SWS90136Southern Waterinactive
- SWS00819Southern Waterinactive
- SWS00753Southern Waterinactive
- NWL00896Northumbrian Waterinactive
- NWL00482Northumbrian Waterinactive
- AWS00239Anglian Waterinactive
- NWL00461Northumbrian Waterinactive
- AWS00641Anglian Waterinactive
- NWL00674Northumbrian Waterinactive
+ 18 more on the national map
Seen something?
Sewage debris, foam, dead fish — citizen sightings are cross-referenced against the official discharge data above and strengthen the public record.