Brentwood and Ongar was polluted by sewage 853 times in 2024
lasting 10,062 hours - that's 1.16 years!

Constituency

Select the constituency from the drop-down

✔ means we have experimental daily data since 2023

Live data for Brentwood and Ongar in 2025

So far this year (as of Apr 16, 2025, 1:30 PM) there has been 3,163 hours of sewage overflows - that's 0.37 years!

Totals for Brentwood and Ongar in 2024

16 Sites polluted by Anglian Water, Thames Water

853 sewage dumps
10,062 h duration

That's 1.16 years! On average 2.3 times a day

Change Over Time

Take Action

Your local MP is Alex Burghart (Conservative) - Find out more about their interests, donors, and voting at They Work For You

Constituencies near Brentwood and Ongar

Waterways in Brentwood and Ongar

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Brentwood and Ongar, 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.

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 2024

Here are all the reported sewage overflow totals for Brentwood and Ongar in 2024. 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 0 of the total 18 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Thames Water	River Cherwell	WILLINGALE WWTW	159	2,426	99.7
Thames Water	Coopers Brook	ABBESS RODING WWTW	124	1,594	100
Thames Water	Brookhouse Brook	Theydon Bois	115	1,207	100
Thames Water	Brookhouse Brook	EPPING WASTEWATER TREATMENT WORKS	68	1,079	99.9
Thames Water	Northweald Brook	NORTH WEALD STW, NORTH WEALD, ESSEX	72	920	99.9
Anglian Water	River Wid	INGATESTONE WATER RECYCLING CENTRE	68	769	98.8
Anglian Water	River Wid	DODDINGHURST WRC	51	555	100
Thames Water	River Ingrebourne	BRENTWOOD (NAGS HEAD LANE) WWTW	46	490	99.9
Anglian Water	River Wid	SHENFIELD STW NO 2 PS	52	380	100
Thames Water	Cripsey Brook	Wealdbridge, North Weald	19	249	100
Anglian Water	Haveringsgrove Brook	INGRAVE PUMPING STATION	16	133	96.7
Anglian Water	River Wid	DODDINGHURST STW	23	115	100
Anglian Water	Mardyke Thames Estuary	WARLEY WEST PS	9	48	83
Anglian Water	R Wid	SO AT SHENFIELD SEWER	16	42	99.2
Anglian Water	River Wid	SHENFIELD AND HUTTON WRC	8	35	100
Anglian Water	Mardyke W Thames Est	WARLEY EAST PS	7	15	100
Thames Water	Colville Hall Brook	HULL GREEN (MATCHING) SPS	0	0	99.7
Anglian Water	River Wid	B'MORE THE GREEN INGATESTONE RD PS	0	0	100

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

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can

Yes! Support TOTP!