Top of the Poops | Constituency Sewage Map

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Derby South so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Constituencies near Derby South

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Severn Trent Water	ALVASTON - RAYNESWAY PARK DRIVE (CSO)	River Derwent	29	167h 59m	28 h
Severn Trent Water	DERBY - STATION APP/PRIDE PARKWAY (CSO)	River Derwent	13	32h 21m	-
Severn Trent Water	SINFIN - WILMORE ROAD (CSO)	Meadow Drain	2	18h 42m	24 h
Severn Trent Water	DERBY - HARROW STREET (CSO)	River Derwent	10	11h 19m	-
Severn Trent Water	CHELLASTON - STATION ROAD XX (CSO)	Cuttle Brook	2	10h 37m	-
Severn Trent Water	NORMANTON - CUTTLEBROOK CLOSE (CSO)	Cuttle Brook	2	9h 59m	486 h
Severn Trent Water	DERBY - FRIAR GATE/VICTORIA STREET (CSO)	Markeaton Brook	2	2h 22m	27 h
Severn Trent Water	DERBY - MORLEDGE/THORNTREE LANE (CSO)	Markeaton Brook	1	0h 49m	-
Severn Trent Water	NORMANTON - CO-OP ST/PROVIDENT ST (CSO)	Cotton Brook	1	0h 27m	-
Severn Trent Water	DERBY - ST PETERS ST/EAST STREET (CSO)	Markeaton Brook	1	0h 5m	174 h
Severn Trent Water	PEAR TREE - LOWER DALE RD (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	DERBY - MEADOW ROAD (SSO)	River Derwent	0	0h	-
Severn Trent Water	DERBY - GREEN LANE/MACKLIN STREET (CSO)	Markeaton Brook	0	0h	-
Severn Trent Water	DERBY - GREEN LANE/MACKLIN STREET (CSO)	Markeaton Brook	0	0h	-
Severn Trent Water	NORMANTON - LOWER DALE RD/BYRON ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	DERBY - ST PETERS ST/EAST STREET (CSO)	Markeaton Brook	0	0h	-
Severn Trent Water	PEAR TREE - PEAR TREE RD (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	DERBY - LITTLEOVER LANE (CSO)	Nailsworth Stream	0	0h	-
Severn Trent Water	DERBY - FRIAR GATE/VICTORIA STREET (CSO)	Markeaton Brook	0	0h	-
Severn Trent Water	PEAR TREE - HARRINGTON/HOLCOMBE ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	CHELLASTON - STATION ROAD XX (CSO)	Cuttle Brook	0	0h	-
Severn Trent Water	NORMANTON - PORTER ROAD/ALMOND ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	NORMANTON - PORTER ROAD/ALMOND ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	PEAR TREE - HARRINGTON/HOLCOMBE ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	DERBY - MORLEDGE/THORNTREE LANE (CSO)	Markeaton Brook	0	0h	-
Severn Trent Water	ALVASTON - RAYNESWAY PARK DRIVE (CSO)	River Derwent	0	0h	-
Severn Trent Water	DERBY - LITTLEOVER LANE (CSO)	Nailsworth Stream	0	0h	12 h
Severn Trent Water	DERBY - HARROW STREET (CSO)	River Derwent	0	0h	-
Severn Trent Water	DERBY - STATION APP/PRIDE PARKWAY (CSO)	River Derwent	0	0h	-
Severn Trent Water	Unknown	Unknown	0	0h	-
Severn Trent Water	NORMANTON - CO-OP ST/SOCIETY PLACE (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	SINFIN - WILMORE ROAD (CSO)	Meadow Drain	0	0h	-
Severn Trent Water	PEAR TREE - LOWER DALE RD (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	NORMANTON - CO-OP ST/PROVIDENT ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	NORMANTON - CO-OP ST/SOCIETY PLACE (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	NORMANTON - CUTTLEBROOK CLOSE (CSO)	Cuttle Brook	0	0h	-
Severn Trent Water	NORMANTON - LOWER DALE RD/BYRON ST (CSO)	Cotton Brook	0	0h	-
Severn Trent Water	PEAR TREE - PEAR TREE RD (CSO)	Cotton Brook	0	0h	-

Company

Site Name

Receiving Waterway

Overflow Days

Total Duration (hours)

Offline/Potential Pollution

Severn Trent Water

ALVASTON - RAYNESWAY PARK DRIVE (CSO)

River Derwent

167h 59m

28 h

Severn Trent Water