Top of the Poops | Constituency Sewage Map - Live Data| Mitcham and Morden

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Mitcham and Morden 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.

Totals for Mitcham and Morden in 2026

Sewage92 hours

Monitoring offline5,450 hours

Potential pollution0 hours

Storm overflows20

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Constituencies near Mitcham and Morden

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Thames Water	Streatham storm relief B	Graveney	25	42h 45m	-
Thames Water	Streatham storm relief E	Graveney	17	28h 30m	-
Thames Water	Streatham & balham storm relief	Graveney	8	11h 45m	2,534 h
Thames Water	Streatham & balham storm relief	Graveney	7	8h 15m	744 h
Thames Water	Longley road XX, tooting high street	River Graveney	1	0h 30m	-
Thames Water	Streatham storm relief A	Graveney	1	0h 30m	-
Thames Water	Longley road XX, tooting high street	River Graveney	0	0h	-
Thames Water	Streatham storm relief G	Graveney	0	0h	-
Thames Water	Streatham storm relief D	Graveney	0	0h	-
Thames Water	Streatham storm relief A	Graveney	0	0h	-
Thames Water	Streatham & balham storm relief	Graveney	0	0h	-
Thames Water	Streatham storm relief E	Graveney	0	0h	-
Thames Water	Streatham storm relief F	Graveney	0	0h	-
Thames Water	Streatham storm relief D	Graveney	0	0h	-
Thames Water	Thrale Road	N/A	0	0h	-
Thames Water	Thrale Road	N/A	0	0h	2,171 h
Thames Water	Streatham storm relief C	Graveney	0	0h	-
Thames Water	Leverson Street	Graveney	0	0h	-
Thames Water	Streatham & balham storm relief	Graveney	0	0h	-
Thames Water	Streatham storm relief B	Graveney	0	0h	-

Company

Site Name

Receiving Waterway

Overflow Days

Total Duration (hours)

Offline/Potential Pollution

Thames Water

Streatham storm relief B

Graveney

42h 45m

Thames Water

Streatham storm relief E