Area of Outstanding Natural Beauty

North Pennines - 2025 Sewage

Polluted by sewage 7,164 hours in 2025 , monitoring offline 16,155 hours , potential overflows 1,254 hours

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

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Totals for North Pennines in 2025

Sewage7,164 hours
Monitoring offline16,155 hours
Potential pollution1,254 hours
Storm overflows74

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Daily Data - when it rained, and when they spilled

Square = rainfall none → heavy
Drop = sewage minutes → all day
Potential pollution Monitoring offline
Jan - 1,631 hours , 576 offline
Feb - 595 hours , 0 potential
Mar - 32 hours , 1,220 offline
Apr - 4 hours , 106 potential
May - 11 hours , 1,545 offline
Jun - 153 hours , 0 potential
Jul - 127 hours , 45 potential
Aug - 5 hours , 24 potential
Sept - 646 hours , 16 potential
Oct - 127 hours , 12 potential
Nov - 1,629 hours , 810 potential
Dec - 2,199 hours , 237 potential

Storm overflows in and around North Pennines

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Northumbrian Water Unknown Unknown 67 1,022h 8m -
Northumbrian Water ALLENDALE STW River East Allen 42 914h 40m -
Northumbrian Water WESTERN AREA STW River Wear 41 863h 10m -
Northumbrian Water Unknown Unknown 41 700h 12m 21 h
Northumbrian Water Unknown Unknown 60 597h 35m 1,634 h
Northumbrian Water ROOKHOPE STW Rookhope Burn 29 456h 19m -
Northumbrian Water FROSTERLEY SEWAGE TREATMENT WORKS Wear 32 451h 26m -
Northumbrian Water NENTHEAD STW River Nent 32 446h 6m 140 h
United Utilities BLENCARN WwTW Blencarn Beck 24 139h 41m 25 h
Northumbrian Water Unknown Unknown 23 137h 12m -
United Utilities CASTLE CARROCK WwTW Castle Carrock Beck 51 106h 50m 3 h
Northumbrian Water Unknown Unknown 21 104h 14m -
Northumbrian Water WESTGATE CSO River Wear 18 93h 26m 163 h
Northumbrian Water Unknown Unknown 26 90h 55m 7 h
Northumbrian Water Unknown Unknown 13 80h 59m -
United Utilities Stenkrith Bridge CSO River Eden 10 80h 38m 67 h
United Utilities DUFTON WwTW Mill Beck 24 76h 2m -
United Utilities Gamblesby PS Gamblesby Beck 23 74h 28m 5 h
Northumbrian Water Unknown Unknown 33 61h 36m 592 h
Northumbrian Water Unknown Unknown 11 60h 38m 751 h
Northumbrian Water Unknown Unknown 23 57h 4m 139 h
United Utilities BLENCARN WwTW Blencarn Beck 9 55h 49m -
Northumbrian Water Unknown Unknown 7 37h 38m -
Northumbrian Water THE CARAVAN PARK CSO River Nent 15 35h 50m -
United Utilities Stenkrith Bridge CSO River Eden 5 35h 18m -
Northumbrian Water Unknown Unknown 10 32h 25m -
United Utilities Unthank PS Hazelrigg Beck 11 30h 33m 28 h
United Utilities CASTLE CARROCK WwTW Castle Carrock Beck 15 28h 40m 152 h
Northumbrian Water STOTSFIELD BURN CSO Rookhope Burn 5 24h 48m -
Northumbrian Water TINDALE STW Tarn Beck 6 22h 40m -
Northumbrian Water Unknown Unknown 5 21h 18m 813 h
Northumbrian Water CHURCH DENE CSO Unnamed River Burn 11 18h 34m -
Northumbrian Water Unknown Unknown 8 17h 39m 2,365 h
Northumbrian Water Unknown Unknown 3 17h 19m 839 h
Northumbrian Water BLANCHLAND STW River Derwent 2 17h 8m -
Northumbrian Water Unknown Unknown 3 17h 3m 96 h
Northumbrian Water WESTGATE CARAVAN SITE CSO Wear 1 16h 18m -
United Utilities DUFTON WwTW Mill Beck 7 16h 14m -
United Utilities Gamblesby PS Gamblesby Beck 3 15h 5m -
Northumbrian Water HUNTSHIELD FORD CSO River Wear 5 13h 37m 631 h
Northumbrian Water Unknown Unknown 9 13h 18m 91 h
Northumbrian Water CSO AT HILLIERSON TERRACE River Nent 5 11h 10m -
Northumbrian Water PHILIPBURN DENE SPS Philip Burn 1 9h 18m -
United Utilities Murton (Bridge House) PS Murton Beck 8 8h 24m 93 h
Northumbrian Water SLAGGYFORD SPS River South Tyne 1 8h 18m -
Northumbrian Water ALSTON EJECTOR STATION SPS River South Tyne 2 5h -
Northumbrian Water Unknown Unknown 2 2h 54m 1,128 h
Northumbrian Water THE FIRS CSO ED003 River South Tyne 1 2h 54m -
Northumbrian Water Unknown Unknown 1 2h 31m 3 h
Northumbrian Water VEDRA CLOSE SSO Wear 1 2h 2m -
United Utilities Unthank PS Hazelrigg Beck 2 1h 58m -
Northumbrian Water FRONT STREET (TOWN HALL) CSO River Nent 2 1h 52m -
United Utilities Castle Carrok CSO (Adjacent Donlea House) Castle Carrock Beck 6 1h 30m 0 h
United Utilities Renwick CSO Harberry Beck 5 1h 24m -
United Utilities Renwick CSO Harberry Beck 5 1h 10m 0 h
Northumbrian Water Unknown Unknown 4 0h 44m 600 h
Northumbrian Water KINGS ARMS LANE CSO River Nent 1 0h 12m -
Northumbrian Water Unknown Unknown 1 0h 12m 15 h
Northumbrian Water Unknown Unknown 1 0h 2m 6,170 h
Northumbrian Water Unknown Unknown 1 0h 1m 15 h
Northumbrian Water THE PETH CSO River East Allen 0 0h -
Northumbrian Water Unknown Unknown 0 0h 7 h
Northumbrian Water Unknown Unknown 0 0h -
Northumbrian Water Unknown Unknown 0 0h -
Northumbrian Water MARKET PLACE CSO Hudeshope Beck 0 0h -
Northumbrian Water Unknown Unknown 0 0h 15 h
Northumbrian Water Unknown Unknown 0 0h 762 h
Northumbrian Water GARRIGILL MANHOLE 9901 SSO South Tyne 0 0h -
Northumbrian Water OPP OLD CASTLESIDE STW CSO Wharnley Burn 0 0h -
Northumbrian Water CATTON LEA CSO River East Allen 0 0h -
Northumbrian Water HOLMSFOOT CSO River Nent 0 0h -
United Utilities Castle Carrok CSO (Adjacent Donlea House) Castle Carrock Beck 0 0h -
United Utilities Murton (Bridge House) PS Murton Beck 0 0h 24 h
Northumbrian Water MILL COTTAGE CSO River East Allen 0 0h -

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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.