South Northamptonshire - 2025 Sewage

Polluted by sewage 29,740 hours in 2025 - That's 3.44 years

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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You're looking at the totals that we have calculated for sewage in South Northamptonshire 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.

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Constituencies near South Northamptonshire

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for South Northamptonshire, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

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Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
Anglian Water WOLLASTON A509 ROUNDABOUT CSO#1 Of Wollaston Brook 217 4,822 h 40m 200.92
Anglian Water TOWCESTER STW River Tove River Great Ouse N 96 2,200 h 30m 91.67
Anglian Water BOZEAT STW Grendon Brook River Nene 104 2,053 h 85.54
Anglian Water GRENDON-HALF MOON SSO Grendon Brook 79 1,833 h 42m 76.38
Anglian Water GREENS NORTON-BENGAL MANOR SSO River Tove 51 1,052 h 53m 43.83
Anglian Water EASTON MAUDIT STW Grendon Brook 52 945 h 21m 39.38
Anglian Water SILVERSTONE STW River Tove River Gre 60 760 h 34m 31.67
Anglian Water ASHTON STW Salcey Brook 32 684 h 24m 28.5
Anglian Water HACKLETON SP Wootton Brook 34 671 h 59m 27.96
Anglian Water COSGROVE-DOGSMOUTH SO SSO Dogsmouth Brook 50 668 h 29m 27.83
Anglian Water HELMDON STW Helmdon Brook River Tove 32 626 h 3m 26.08
Anglian Water CROWFIELD SP Syresham Stream 35 610 h 24m 25.42
Anglian Water WHITTLEBURY SP Silverstone Brook 35 590 h 3m 24.58
Anglian Water EVENLEY STW Stream River Great Ouse 32 585 h 29m 24.38
Anglian Water WOLLASTON-UNITY CLOSE SSO River Nene 52 572 h 22m 23.83
Anglian Water PAULERSPURY-CUTTLE MILL SP River Tove 33 568 h 43m 23.67
Anglian Water GREAT DODDINGTON STW River Nene 33 545 h 48m 22.71
Anglian Water STOKE BRUERNE STW River Tove 30 544 h 56m 22.67
Anglian Water DENTON TPS (NORTHANTS) Denton Brook 31 539 h 49m 22.46
Anglian Water GRENDON STW River Chater 38 536 h 53m 22.33
Anglian Water KISLINGBURY-BAPTIST CHAPEL SSOAA River Nene 32 533 h 2m 22.21
Anglian Water HARPOLE-WEEDON RD SSO River Nene 46 530 h 34m 22.08
Anglian Water Harpole - Northampton Road Combined Sewer Overflow River Nene 42 519 h 14m 21.62
Anglian Water WOLLASTON LONDON RD SSO Wollaston Brook 35 512 h 30m 21.33
Anglian Water ROTHERSTHORPE SP Wotton Brook 26 510 h 48m 21.25
Anglian Water BUGBROOKE STW Bugbrooke Brook 24 510 h 8m 21.25
Anglian Water GREENS NORTON STW River Tove 23 509 h 44m 21.21
Anglian Water BOZEAT-SPRING VALE SSO Grendon Brook 26 507 h 47m 21.12
Anglian Water BRACKLEY (EX STW SITE) TPS River Ouse 28 507 h 8m 21.12
Anglian Water HELMDON TPS River Tove 22 505 h 21.04
Anglian Water SILVERSTONE STW River Tove River Gre 30 388 h 6m 16.17
Anglian Water TOWCESTER STW River Tove River Great Ouse N 14 256 h 35m 10.67
Thames Water Banbury Road (Kings Sutton) SPS Middleton Brook 24 180 h 12m 7.5
Anglian Water TIFFIELD STW Hulcote Brook River Tove 19 162 h 31m 6.75
Anglian Water HELMDON STW Helmdon Brook River Tove 13 162 h 3m 6.75
Anglian Water EASTON MAUDIT STW Grendon Brook 14 152 h 9m 6.33
Thames Water Greatworth STW Farthinghoestream 10 116 h 30m 4.83
Anglian Water BOZEAT STW Grendon Brook River Nene 11 113 h 4.71
Anglian Water HACKLETON SP Wootton Brook 8 112 h 59m 4.67
Thames Water Marston St Lawrence SPS N/A 18 106 h 46m 4.42
Anglian Water GREENS NORTON STW River Tove 8 77 h 57m 3.21
Anglian Water COSGROVE-DOGSMOUTH SO SSO Dogsmouth Brook 13 76 h 15m 3.17
Thames Water Moreton Pinkney STW Ashby Brook 15 70 h 45m 2.92
Anglian Water STOKE BRUERNE STW River Tove 7 65 h 35m 2.71
Anglian Water WHITTLEBURY SP Silverstone Brook 7 65 h 30m 2.71
Thames Water Middleton Cheney STW Washle Brook 7 64 h 2.67
Thames Water Middleton Cheney STW Washle Brook 6 58 h 30m 2.42
Anglian Water BUGBROOKE STW Bugbrooke Brook 12 55 h 2m 2.29
Thames Water Chacombe STW Chacombe Brook 13 50 h 15m 2.08
Anglian Water BRAFIELD-LOWER END SP Unknown River Nene 23 50 h 3m 2.08
Anglian Water WOLLASTON-UNITY CLOSE SSO River Nene 13 49 h 14m 2.04
Anglian Water CROWFIELD SP Syresham Stream 7 45 h 43m 1.88
Anglian Water GRENDON STW River Chater 4 36 h 21m 1.5
Anglian Water PAULERSPURY-CUTTLE MILL SP River Tove 8 36 h 11m 1.5
Thames Water Culworth STW Culworth Brook 7 35 h 45m 1.46
Thames Water Moreton Pinkney STW Ashby Brook 12 35 h 30m 1.46
Anglian Water BUGBROOKE TPS Bugbrooke Brook 3 35 h 8m 1.46
Thames Water Kings Sutton STW Kings Sutton Stream 6 33 h 30m 1.38
Thames Water Marston St Lawrence SPS N/A 6 33 h 18m 1.38
Anglian Water ASHTON STW Salcey Brook 5 31 h 41m 1.29
Anglian Water ROTHERSTHORPE SP Wotton Brook 5 25 h 46m 1.04
Anglian Water DENTON TPS (NORTHANTS) Denton Brook 5 24 h 30m 1
Anglian Water EVENLEY STW Stream River Great Ouse 5 24 h 14m 1
Anglian Water HARPOLE-WEEDON RD SSO River Nene 10 24 h 4m 1
Anglian Water YARDLEY HASTINGS WORKS SP Grendon Brook 2 24 h 1
Anglian Water YARDLEY HASTINGS WORKS SP Grendon Brook 2 23 h 58m 0.96
Anglian Water GAYTON STW (S NORTHANTS) Wootton Brook River Nene 6 23 h 48m 0.96
Anglian Water YARDLEY HASTINGS STW Grendon Brook 6 15 h 50m 0.62
Anglian Water HARTWELL-COLMAR KENNELS SSO River Tove 5 15 h 45m 0.62
Anglian Water BRACKLEY (EX STW SITE) TPS River Ouse 5 15 h 41m 0.62
Anglian Water HELMDON TPS River Tove 2 15 h 14m 0.62
Anglian Water BUGBROOKE TPS Bugbrooke Brook 5 13 h 54m 0.54
Thames Water Banbury Road (Kings Sutton) SPS Middleton Brook 7 13 h 40m 0.54
Anglian Water WOLLASTON A509 ROUNDABOUT CSO#1 Of Wollaston Brook 9 12 h 57m 0.5
Anglian Water KISLINGBURY SP River Nene 6 12 h 47m 0.5
Thames Water Kings Sutton STW Kings Sutton Stream 2 11 h 45m 0.46
Anglian Water Harpole - Northampton Road Combined Sewer Overflow River Nene 5 11 h 2m 0.46
Anglian Water UPPER HEYFORD SSO River Nene 10 10 h 31m 0.42
Anglian Water GREAT DODDINGTON STW River Nene 3 8 h 46m 0.33
Thames Water Chacombe STW Chacombe Brook 4 8 h 45m 0.33
Anglian Water KISLINGBURY-BAPTIST CHAPEL SSOAA River Nene 2 8 h 14m 0.33
Anglian Water WOLLASTON LONDON RD SSO Wollaston Brook 7 8 h 13m 0.33
Anglian Water GRENDON-LOWER END SSO Grendon Brook 3 6 h 57m 0.25
Thames Water Greatworth STW Farthinghoestream 1 6 h 30m 0.25
Anglian Water BUGBROOKE-ACE LANE SSO Bugbrooke Brook 6 6 h 8m 0.25
Anglian Water POTTERSBURY-CHURCH END SO- SSO Great River Ouse 1 6 h 0.25
Anglian Water SHUTLANGER SO-FIELD 76 SSO Shutlanger Brook 6 5 h 29m 0.21
Anglian Water SHUTLANGER SO-FIELD 76 SSO Shutlanger Brook 6 5 h 15m 0.21
Anglian Water MILTON MALSOR-LOWER ROAD SSO Milton Brook 8 5 h 0.21
Anglian Water TIFFIELD STW Hulcote Brook River Tove 1 4 h 44m 0.17
Anglian Water BOZEAT-SPRING VALE SSO Grendon Brook 1 3 h 59m 0.12
Anglian Water CASTLE ASHBY STW Un Castle Ashby 7 3 h 6m 0.12
Anglian Water POTTERSBURY-CHURCH END SO- SSO Great River Ouse 2 2 h 30m 0.08
Anglian Water Cosgrove 23 Main Street Combined Sewer Overflow River Tove 4 1 h 59m 0.04
Anglian Water TOWCESTER-SPRINGFIELDS SP Silverstone Brook 1 1 h 45m 0.04
Anglian Water PATTISHALL SSO Pattishall Brook 4 1 h 45m 0.04
Anglian Water COGENHOE MILL LANE CSO Nene - Conf Brampton Branch To Conf Ise 4 1 h 31m 0.04
Anglian Water MILTON MALSOR-LOWER ROAD SSO Milton Brook 2 1 h 30m 0.04
Anglian Water LITCHBOROUGH STW Farthingstone Brook River Nene 1 1 h 14m 0.04
Anglian Water HARTWELL-COLMAR KENNELS SSO River Tove 1 0 h 45m 0
Anglian Water Cosgrove 23 Main Street Combined Sewer Overflow River Tove 2 0 h 45m 0
Anglian Water GRIMSCOTE SP Bugbrooke Brook 2 0 h 45m 0
Anglian Water PATTISHALL SSO Pattishall Brook 1 0 h 44m 0
Anglian Water GRIMSCOTE SP Bugbrooke Brook 1 0 h 29m 0
Anglian Water ROADE SO SSO Tove 1 0 h 15m 0
Anglian Water BRADDEN SP River Tove 1 0 h 15m 0
Anglian Water GREENS NORTON-BENGAL MANOR SSO River Tove 1 0 h 14m 0
Anglian Water LITTLE HOUGHTON-MEADOW LANE SSO Unknown River Nene 0 0 h 0
Anglian Water ABTHORPE TPS River Tove 0 0 h 0
Anglian Water DEANSHANGER SO SSO Great River Ouse 0 0 h 0
Anglian Water WAPPENHAM TPS River Tove 0 0 h 0
Anglian Water WOLLASTON-PYGHTLES SSO River Nene 0 0 h 0
Anglian Water BRAFIELD-LOWER END SP Unknown River Nene 0 0 h 0
Anglian Water BRADDEN SP River Tove 0 0 h 0
Anglian Water SILVERSTONE PLAYING FIELD SSO1_NEW Silverstone Brook 0 0 h 0
Anglian Water ABTHORPE TPS River Tove 0 0 h 0
Anglian Water CASTLE ASHBY STW Un Castle Ashby 0 0 h 0
Anglian Water LITCHBOROUGH STW Farthingstone Brook River Nene 0 0 h 0
Anglian Water TOWCESTER TPS Silverstone Brook River Tove 0 0 h 0
Anglian Water SILVERSTONE PLAYING FIELD SSO1_NEW Silverstone Brook 0 0 h 0
Anglian Water Unknown Unknown 0 0 h 0
Anglian Water GRENDON-HALF MOON SSO Grendon Brook 0 0 h 0
Anglian Water BRACKLEY-BRIDGE ST SSO Hinton Stream 0 0 h 0
Anglian Water UPPER HEYFORD SSO River Nene 0 0 h 0
Anglian Water BLAKESLEY TPS River Tove 0 0 h 0
Anglian Water YARDLEY HASTINGS STW Grendon Brook 0 0 h 0
Anglian Water KISLINGBURY SP River Nene 0 0 h 0
Anglian Water GAYTON STW (S NORTHANTS) Wootton Brook River Nene 0 0 h 0
Anglian Water BUGBROOKE-ACE LANE SSO Bugbrooke Brook 0 0 h 0
Thames Water Culworth STW Culworth Brook 0 0 h 0
Anglian Water HARTWELL-SALCEY FOREST SSO Salcey Brook 0 0 h 0
Anglian Water COGENHOE MILL LANE CSO Nene - Conf Brampton Branch To Conf Ise 0 0 h 0

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.

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