Top of the Poops | Constituency Sewage Map - 2025 Data| Mitcham and Morden

{"type":"Polygon","coordinates":[[[-0.14038479,51.419263859],[-0.14809037,51.412870621],[-0.144815147,51.412389509],[-0.142623512,51.413348409],[-0.134108992,51.410992033],[-0.133529312,51.412939267],[-0.132705802,51.412346038],[-0.127547058,51.412301382],[-0.129482204,51.4095747],[-0.132103182,51.409202895],[-0.132329053,51.406808688],[-0.13047157,51.403274482],[-0.124165506,51.397609914],[-0.129677923,51.39365266],[-0.128753114,51.393502586],[-0.134347573,51.390847682],[-0.141875445,51.389304832],[-0.144383557,51.390669264],[-0.158052073,51.389252317],[-0.160986534,51.387820287],[-0.165240113,51.387972716],[-0.16641673,51.389658843],[-0.171218052,51.392460853],[-0.174838222,51.393413982],[-0.179864428,51.38948531],[-0.188424022,51.385435328],[-0.193868835,51.387914599],[-0.200322894,51.384937436],[-0.203431671,51.387254302],[-0.205098484,51.386136803],[-0.209808398,51.388300767],[-0.218104627,51.380183493],[-0.227748786,51.383970394],[-0.233873399,51.387720785],[-0.234893947,51.391782413],[-0.232136874,51.392459331],[-0.232681799,51.393126697],[-0.226824472,51.392788287],[-0.226341443,51.393274618],[-0.227508153,51.394401998],[-0.226320707,51.395407362],[-0.220942162,51.396728629],[-0.226097235,51.400104437],[-0.224987366,51.400588067],[-0.224928478,51.401889711],[-0.228538117,51.402942515],[-0.228812842,51.407107503],[-0.220201753,51.407510328],[-0.214111061,51.409203624],[-0.203105923,51.401557148],[-0.198944586,51.394973066],[-0.198210835,51.394978422],[-0.195612487,51.397546026],[-0.194577688,51.401975941],[-0.191595265,51.403741963],[-0.18910667,51.403920255],[-0.184338496,51.408380964],[-0.183659902,51.414621213],[-0.182360817,51.416226918],[-0.180834003,51.416541433],[-0.181377584,51.419405908],[-0.180639571,51.420025733],[-0.182398479,51.421806077],[-0.177786203,51.422553269],[-0.178794665,51.424319576],[-0.164735099,51.420067212],[-0.161621107,51.419855773],[-0.159909633,51.422610365],[-0.151414145,51.419874601],[-0.149446593,51.419888547],[-0.144480239,51.417751983],[-0.14038479,51.419263859]]]}

Which Year?

Select Another Constituency

Constituency

Select the constituency from the drop-down

✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Mitcham and Morden for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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.

Take Action

Your local MP is Siobhain McDonagh (Labour) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK

Constituencies near Mitcham and Morden

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Thames Water	Streatham & balham storm relief	Graveney	35	108 h 15m	1,789 h
Thames Water	Streatham storm relief E	Graveney	20	26 h 45m	-
Thames Water	Streatham storm relief B	Graveney	12	15 h 15m	-
Thames Water	Streatham & balham storm relief	Graveney	11	14 h 15m	668 h
Thames Water	Streatham storm relief A	Graveney	5	12 h 15m	594 h
Thames Water	Streatham storm relief B	Graveney	4	8 h 30m	-
Thames Water	Streatham storm relief E	Graveney	3	6 h	-
Thames Water	Longley road XX, tooting high street	River Graveney	3	1 h 30m	2,737 h
Thames Water	Thrale Road	N/A	1	0 h 34m	71 h
Thames Water	Streatham storm relief C	Graveney	1	0 h	-
Thames Water	Streatham storm relief G	Graveney	0	0 h	-
Thames Water	Streatham storm relief D	Graveney	0	0 h	659 h
Thames Water	Streatham storm relief F	Graveney	0	0 h	-
Thames Water	Longley road XX, tooting high street	River Graveney	0	0 h	-
Thames Water	Streatham storm relief D	Graveney	0	0 h	229 h
Thames Water	Streatham storm relief A	Graveney	0	0 h	-
Thames Water	Thrale Road	N/A	0	0 h	-
Thames Water	Streatham & balham storm relief	Graveney	0	0 h	818 h
Thames Water	Leverson Street	Graveney	0	0 h	113 h
Thames Water	Streatham & balham storm relief	Graveney	0	0 h	1,937 h

Company

Site Name

Receiving Waterway

Overflow Days

Total Duration (hours)

Offline/Potential Pollution

Thames Water

Streatham & balham storm relief

Graveney

108 h 15m

1,789 h

Thames Water