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 3 months ago
Started 17 hours ago
Started 2 hours ago
Started 4 days ago
Started 3 months ago
North East Somerset and Hanham
Started 19 hours ago
Started 2 months ago
We have live data for Wessex 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 Wessex 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.
Wessex Water is highlighted in the plot below
Salisbury polluted for 6,466 hours, into River Bourne
310 incidents
That's 8.98 months.
6 times a week, on average
East Wiltshire polluted for 4,869 hours, into River Till
235 incidents
That's 6.76 months.
4.5 times a week, on average
North East Somerset and Hanham polluted for 4,641 hours, into River Chew
258 incidents
That's 6.45 months.
5 times a week, on average
Melksham and Devizes polluted for 4,371 hours, into River Avon
192 incidents
That's 6.07 months.
3.7 times a week, on average
Thornbury and Yate polluted for 4,012 hours, into Luckington Brook
189 incidents
That's 5.57 months.
3.6 times a week, on average
West Dorset polluted for 3,793 hours, into River Bride
188 incidents
That's 5.27 months.
3.6 times a week, on average
That's 4.52 years!
5,221 incidents
On average 14.3 times a day
That's 1.86 years!
2,048 incidents
On average 5.6 times a day
That's 1.3 years!
649 incidents
On average 1.8 times a day
That's 1.17 years!
943 incidents
On average 2.6 times a day
That's 1.16 years!
824 incidents
On average 2.3 times a day
That's 1.11 years!
813 incidents
On average 2.2 times a day
That's 4.79 months.
312 incidents
6 times a week, on average
That's 3.14 months.
208 incidents
4 times a week, on average
That's 1.54 months.
138 incidents
2.7 times a week, on average
That's 1.13 months.
78 incidents
1.5 times a week, on average
That's 26.79 days.
58 incidents
1.1 times a week, on average
That's 24.71 days.
110 incidents
2.1 times a week, on average
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
