Henley and Thame was polluted by sewage 553 times in 2023
lasting 7,205 hours
- but monitoring was disabled in some locations, so could be more

Constituency

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✔ means we have experimental daily data since 2023

Totals for Henley and Thame in 2023

15 Sites polluted by Thames Water

553 sewage dumps
7,205 h duration

That's 10.01 months. On average 1.5 times a day

Change Over Time

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Constituencies near Henley and Thame

Waterways in Henley and Thame

Daily Data

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 2023

Here are all the reported sewage overflow totals for Henley and Thame in 2023. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 3 of the total 20 CSO locations had reporting enabled for less than half the year, of which 3 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Thames Water	Warpsgrave Ditch	CHALGROVE STW, CHALGROVE, OXON	132	2,201	99.8
Thames Water	Wheatley Ditch	WHEATLEY STW, WHEATLEY, OXON	124	2,077	99.8
Thames Water	Gainsbridge Brook	LITTLE MILTON WWTW	68	1,258	97.8
Thames Water	Henton Stream	CHINNOR STW, CHINNOR, OXON	89	558	99.5
Thames Water	Lashlake Stream	THAME WASTEWATER TREATMENT WORKS	38	438	99.8
Thames Water	Latchford Brook	TETSWORTH WWTW	36	305	94
Thames Water	Howbery Ditch	BENSON STW, HENLEY ROAD, BENSON, OX	12	164	99.6
Thames Water	Otmoor Lane Ditch	CONSTABLE'S PIECE WWTW	22	141	81.6
Thames Water	Pyrton Stream	Watlington	8	17	99.9
Thames Water	Thame	DORCHESTER WWTW	4	17	99.5
Thames Water	Thames	Friday Street, Henley	14	11	87.8
Thames Water	Polecat End Ditch	Forest Hill	3	6	99.9
Thames Water	Into Land	Sonning Common	1	4	99.3
Thames Water	Fawley Court Stream	HENLEY WASTEWATER TREATMENT WORKS	1	3	99.3
Thames Water	Sydenham Stream	Manor Farm	1	1	99.6
Thames Water	Stanton Stream	Stanton St. John STW Pumping Statio	0	0	0
Thames Water	River Thames	GORING WASTEWATER TREATMENT WORKS	0	0	98.9
Thames Water	Moorbridge Brook	Stanton St John	0	0	0
Thames Water	Cherwell	Woodeaton STW Pumping Station	0	0	0
Thames Water	Thames	Reading, Caversham	0	0	98.7

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. 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.

Analysing sewage pollution by the Water Industry

With generous support from:

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