Henley polluted by sewage 326 times in 2022 - lasting 3,414 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 Henley in 2022
18 Sites polluted by Thames Water
326 sewage dumps
3,414 h duration
That's 4.74 months. 6.3 times a week, on average
Live River Pollution Information (Updated 2 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 Henley in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Thames Water Gainsbridge Brook LITTLE MILTON WWTW 59 1,053 97.7
Thames Water Wheatley Ditch WHEATLEY STW, WHEATLEY, OXON 41 566 97.2
Thames Water Bletchingdon Brook BLETCHINGDON WWTW 48 492 99.4
Thames Water Warpsgrave Ditch CHALGROVE WWTW 31 336 93.6
Thames Water Gallos Brook WESTON-ON-THE-GREEN WWTW 22 333 99.8
Thames Water Oxon Ray CHARLTON-ON-OTMOOR WWTW 32 228 99.9
Thames Water Oxon Ray ISLIP (NEW) WWTW 23 86 100
Thames Water Latchford Brook TETSWORTH WWTW 18 74 86.4
Thames Water Danes Brook HORTON-CUM-STUDLEY WWTW 7 69 92.5
Thames Water Henton Stream CHINNOR WASTEWATER TREATMENT WORKS 9 67 99.9
Thames Water Lashlake Stream THAME WASTEWATER TREATMENT WORKS 8 47 100
Thames Water Otmoor Lane Ditch CONSTABLE'S PIECE WWTW 2 19 98.4
Thames Water Sydenham Stream Manor Farm 2 15 100
Thames Water Pyrton Stream Watlington 5 11 93.8
Thames Water Gallos Brook Weston-on-the-green STW Pumping Sta 4 8 97.7
Thames Water Howberry Ditch BENSON STW, HENLEY ROAD, BENSON, OX 13 2 95.2
Thames Water Thames Friday Street, Henley 1 0 72.4
Thames Water Into Land Sonning Common 1 0 100
Thames Water Stanton Stream Stanton St. John STW Pumping Statio 0 0 0
Thames Water Chinnor Brook Industrial Estate 1 0 0 0
Thames Water Fawley Court Stream HENLEY WASTEWATER TREATMENT WORKS 0 0 100
Thames Water Moorbridge Brook Stanton St John 0 0 0
Thames Water Thames Reading, Caversham 0 0 100
Thames Water Thame DORCHESTER WWTW 0 0 100
Thames Water Cherwell Woodeaton STW Pumping Station 0 0 0
Thames Water Thames Littlemore Low Level 0 0 99.8
Thames Water Polecat End Ditch Forest Hill 0 0 100
Thames Water Clifton Hampden Ditch CULHAM WASTEWATER TREATMENT WORKS 0 0 99.8

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.

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