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.
South West Water is highlighted in the plot below
Torridge and West Devon polluted for 5,244 hours, into Blackbrook River
253 incidents
That's 7.28 months.
4.9 times a week, on average
Tiverton and Honiton polluted for 5,212 hours, into Weaver
258 incidents
That's 7.24 months.
5 times a week, on average
Torridge and West Devon polluted for 5,177 hours, into Milton Stream
294 incidents
That's 7.19 months.
5.7 times a week, on average
North Cornwall polluted for 5,050 hours, into River Inny
346 incidents
That's 7.01 months.
6.7 times a week, on average
East Devon polluted for 4,827 hours, into Salcombe Regis Stream
223 incidents
That's 6.7 months.
4.3 times a week, on average
North Cornwall polluted for 4,771 hours, into River Allen
343 incidents
That's 6.63 months.
6.6 times a week, on average
That's 3.27 years!
3,351 incidents
On average 9.2 times a day
That's 2.36 years!
1,999 incidents
On average 5.5 times a day
That's 1.81 years!
1,406 incidents
On average 3.9 times a day
That's 1.39 years!
770 incidents
On average 2.1 times a day
That's 1.32 years!
1,161 incidents
On average 3.2 times a day
That's 10.14 months.
655 incidents
On average 1.8 times a day
That's 8.8 months.
1,264 incidents
On average 3.5 times a day
That's 7.23 months.
465 incidents
On average 1.3 times a day
That's 4.73 months.
228 incidents
4.4 times a week, on average
That's 3.25 months.
451 incidents
On average 1.2 times a day
That's 3.03 months.
120 incidents
2.3 times a week, on average
That's 2.78 months.
140 incidents
2.7 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.
