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 2 weeks ago
Started 2 weeks ago
Started 3 months ago
Started 1 week ago
Started 4 weeks ago
Started 1 month ago
Started 1 month ago
Started 5 days ago
Started 2 months ago
We have live data for United Utilities 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 United Utilities
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.
United Utilities is highlighted in the plot below
Westmorland and Lonsdale polluted for 4,775 hours, into River Eea
236 incidents
That's 6.63 months.
4.5 times a week, on average
Barrow and Furness polluted for 4,517 hours, into Gleaston Beck
191 incidents
That's 6.27 months.
3.7 times a week, on average
Penrith and Solway polluted for 4,280 hours, into Burghmoor Beck
310 incidents
That's 5.94 months.
6 times a week, on average
Barrow and Furness polluted for 3,863 hours, into Deep Meadows Beck
216 incidents
That's 5.37 months.
4.2 times a week, on average
Ellesmere Port and Bromborough polluted for 3,635 hours, into River Mersey Estuary
325 incidents
That's 5.05 months.
6.2 times a week, on average
Westmorland and Lonsdale polluted for 3,579 hours, into Chapel Beck
219 incidents
That's 4.97 months.
4.2 times a week, on average
That's 1.45 years!
1,865 incidents
On average 5.1 times a day
That's 1.38 years!
2,523 incidents
On average 6.9 times a day
That's 1.3 years!
1,646 incidents
On average 4.5 times a day
That's 1.22 years!
1,947 incidents
On average 5.3 times a day
That's 1.11 years!
1,066 incidents
On average 2.9 times a day
That's 10.7 months.
746 incidents
On average 2 times a day
That's 1.09 years!
1,797 incidents
On average 4.9 times a day
That's 8.74 months.
759 incidents
On average 2.1 times a day
That's 8.25 months.
1,021 incidents
On average 2.8 times a day
That's 5.61 months.
631 incidents
On average 1.7 times a day
That's 5.21 months.
301 incidents
5.8 times a week, on average
That's 5.14 months.
485 incidents
On average 1.3 times a day
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.