Here are the ones that have been overflowing for the longest, without interruption
We are getting more data collated for each of the CSOs... right now we just have the Constituency. Unfortunately, the water companies use different names for the CSOs in their live data than in the annual returns, so it will take a bit of time to link all the data up....
Started 4 months ago
Started 13 hours ago
Started 2 hours ago
Started 3 hours ago
Cities of London and Westminster
Started 4 weeks ago
Cities of London and Westminster
Started 3 weeks ago
Started 2 weeks ago
Started 2 weeks ago
Started 8 hours ago
We have live data for Thames Water so we can track what happens every day - given that overflows are supposed to happen on an 'exceptional' basis only - does the chart indicate that?
The red line indicates the number of CSOs that overflowed for at least 30mins, the grey, the number of CSOs that were offline for at least 30mins, and the blue line is the total number of CSOs that we can get information for.
There is daily updated information on all constituencies covered by Thames Water
How does each water company compare? These are the totals by company for each. The totals are really high, counting things in hours doesn't make it very easy to think about. Here we show how many years of continuous sewage dumps happened in a single year, by water company.
It isn't like there are just a few outliers... the problem exists across the entire estate of water assets. Here we show a 'cumulative frequency diagram' - where the number of CSOs that dumped sewage for a time, or longer, is shown. You can see that many CSOs dumped sewage into a river for months and months.
Thames Water is highlighted in the plot below
Didcot and Wantage polluted for 5,353 hours, into Mill Brook
261 incidents
That's 7.43 months.
5 times a week, on average
Newbury polluted for 5,062 hours, into Winterbournestream
219 incidents
That's 7.03 months.
4.2 times a week, on average
Chesham and Amersham polluted for 4,842 hours, into Misbourne
210 incidents
That's 6.72 months.
4 times a week, on average
Buckingham and Bletchley polluted for 4,482 hours, into Hardwick Brook
217 incidents
That's 6.22 months.
4.2 times a week, on average
South Cotswolds polluted for 4,459 hours, into Shorncote Ditch
236 incidents
That's 6.19 months.
4.5 times a week, on average
Daventry polluted for 4,433 hours, into Boddington Canal Feeder
235 incidents
That's 6.16 months.
4.5 times a week, on average
That's 1.05 years!
667 incidents
On average 1.8 times a day
That's 10.67 months.
354 incidents
6.8 times a week, on average
That's 10.15 months.
1,077 incidents
On average 3 times a day
That's 8.54 months.
422 incidents
On average 1.2 times a day
That's 7.43 months.
261 incidents
5 times a week, on average
That's 7.03 months.
219 incidents
4.2 times a week, on average
That's 1.79 years!
866 incidents
On average 2.4 times a day
That's 2.46 months.
101 incidents
1.9 times a week, on average
That's 0.38 days.
6 incidents
0.5 times a month, over the year
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org
