North Wiltshire polluted by sewage 1,392 times in 2022 - lasting 10,302 hours

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Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
✔ means we have experimental daily data for 2023
Totals for North Wiltshire in 2022
50 Sites polluted by Thames Water, Wessex Water
1,392 sewage dumps
10,302 h duration
That's 1.19 years! On average 3.8 times a day
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Constituencies near North Wiltshire
Waterways in North Wiltshire
Live River Pollution Information (Updated 3 hours ago)
On the map above you can see live river pollution information. Rivers likely to be impacted by sewage pollution are marked in brown. This is based on Thames Water live data API, and modelling by Dr Alex Lipp at Merton College, Oxford. More details on the methodology will be added soon.
Daily Data for 2023
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2022

Here are all the reported sewage overflow totals for North Wiltshire in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Wessex Water River Marden BROADS GREEN PS 66 1,281 100
Wessex Water Gauze Brook HULLAVINGTON WWTW 77 993 99.95
Wessex Water Bristol Avon SUTTON BENGER WWTW 46 885 100
Wessex Water Derry Brook STATION ROAD SEWAGE PUMPING STATION 44 515 100
Wessex Water By Brook BOX WASTEWATER TREATMENT WORKS 46 505 100
Wessex Water Unnamed Braydon HANKERTON SEWAGE PUMPING STATION, W 39 491 99.8
Wessex Water River Marden CALNE WASTEWATER TREATMENT WORKS 51 423 100
Wessex Water Springs Watercourse RAF LYNEHAM WWTW 26 395 100
Wessex Water River Avon KINGTON LANGLEY PUMPING STATION 37 387 94
Wessex Water Pudding Brook MANOR COTTAGES PUMPING STATION 50 376 99.8
Wessex Water Abberd Brook THE PONDS PS 24 375 100
Wessex Water River Avon MALMESBURY WWTW 45 371 100
Wessex Water Woodbridge Brook LEA NORTH PUMPING STATION 43 367 99.9
Wessex Water Luckington Brook LUCKINGTON WATER RECYCLING CENTRE 19 312 100
Wessex Water Braydon Brook FLISTERIDGE PS 23 305 99.9
Thames Water River Thames CRICKLADE WWTW 56 297 84.2
Wessex Water By Brook LONG DEAN WASTEWATER TREATMENT WORK 27 252 99.9
Wessex Water Hancock'S Water WOOTTON BASSETT WWTW 20 213 100
Wessex Water Brinkworth Brook BRINKWORTH WWTW 28 206 100
Wessex Water Charlton Stream TANNERS BRIDGE PUMPING STATION 19 200 95.2
Wessex Water River Avon GREAT SOMERFORD WWTW 27 192 100
Wessex Water Gauze Brook MILL LANE COMBINED SEWER OVERFLOW 17 161 97.2
Thames Water River Key PURTON WWTW 19 128 85.3
Wessex Water Avon SHERSTON WASTEWATER TREATMENT WORKS 33 106 99.8
Wessex Water By Brook RECREATION GROUND 1 CSO 38 74 100
Wessex Water River Marden QUEMERFORD BRIDGE CSO 24 71 100
Wessex Water By Brook MILL LANE PUMPING STATION 37 71 100
Wessex Water Bourne SWALLETT GATE PUMPING STATION 27 50 100
Wessex Water Burton Brook BURTON WASTEWATER TREATMENT WORKS 22 39 100
Wessex Water Rodbourne Brook LOWER STANTON ST QUINTIN WW PS 83 37 100
Wessex Water Cowage Brook, TOCKENHAM 30 32 99.4
Wessex Water River Avon ST JOHNS STREET PUMPING STATION 30 29 100
Wessex Water Dauntsey Brook THE GREEN PS 12 23 100
Wessex Water River Marden PATFORD STREET CSO 16 21 100
Wessex Water By Brook RECREATION GROUND 2 CSO 35 21 100
Wessex Water Hancock'S Water WOOTTON BASSETT CSO 8 16 99.5
Wessex Water Sherston Avon ST. JOHNS BRIDGE CSO 20 10 100
Wessex Water Sherston Avon FOXLEY ROAD COMBINED SEWER OVERFLOW 33 9 100
Wessex Water River Avon PARK ROAD COMBINED SEWER OVERFLOW 25 8 100
Wessex Water River Avon THE TARTERS CSO 25 8 100
Wessex Water River Avon RAF HULLAVINGTON PS 2 7 99.9
Wessex Water River Marden THE STRAND CSO 13 5 89.6
Wessex Water River Avon UPPER SEAGRY 7 4 100
Wessex Water By Brook COLERNE WATER RECYLCING CENTRE 2 4 100
Wessex Water River Avon NOAH'S ARK PUMPING STATION 3 3 100
Wessex Water River Avon BURTON HILL PS 3 0 88.3
Wessex Water River Avon LAWNWOOD COMBINED SEWER OVERFLOW 6 0 99.2
Wessex Water River Avon HARPERS LANE CSO 7 0 96
Wessex Water River Marden Via Sws WOOD STREET COMBINED SEWER OVERFLOW 1 0 99.7
Wessex Water Woodbridge Brook BRINKWORTH CSO 1 0 100
Wessex Water River Avon CHURCH ROAD PUMPING STATION 0 0 100
Wessex Water Luckington Brook ALDERTON STW 0 0 0
Thames Water River Thames HATCHETTS SPS 0 0 0
Wessex Water River Marden ROUGH LEAZE 0 0 0
Wessex Water River Avon PARLIAMENT ROW CSO 0 0 0
Wessex Water River Marden Via Sws MARKET HILL CSO 0 0 0
Wessex Water Westbury Park W/C Via Sws NEW ROAD COMBINED SEWER OVERFLOW 0 0 100
Wessex Water Rivers Brook COMPTON BASSETT WWTW 0 0 0
Wessex Water Unknown MOSSES MILL CSO 2 0 0 0
Wessex Water Unknown PATFORD ST/BANK OF RIVER MARDEN CSO 0 0 0
Wessex Water Unknown MOSSES MILL CSO 1 0 0 0

Data Sources & Accuracy

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

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. This 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.

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