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 6,183 hours, into River Till
262 incidents
That's 8.59 months.
5 times a week, on average
Devizes polluted for 4,210 hours, into River Avon
193 incidents
That's 5.85 months.
3.7 times a week, on average
Salisbury polluted for 3,980 hours, into River Bourne
253 incidents
That's 5.53 months.
4.9 times a week, on average
West Dorset polluted for 3,671 hours, into River Bride
184 incidents
That's 5.1 months.
3.5 times a week, on average
Thornbury and Yate polluted for 3,654 hours, into Luckington Brook
167 incidents
That's 5.08 months.
3.2 times a week, on average
That's 3.77 years!
4,719 incidents
On average 12.9 times a day
That's 1.37 years!
1,783 incidents
On average 4.9 times a day
That's 1.15 years!
816 incidents
On average 2.2 times a day
That's 1.12 years!
893 incidents
On average 2.4 times a day
That's 1.08 years!
723 incidents
On average 2 times a day
That's 10.96 months.
816 incidents
On average 2.2 times a day
That's 4.21 months.
303 incidents
5.8 times a week, on average
That's 3.41 months.
211 incidents
4.1 times a week, on average
That's 2.3 months.
165 incidents
3.2 times a week, on average
That's 1.26 months.
75 incidents
1.4 times a week, on average
That's 1.11 months.
113 incidents
2.2 times a week, on average
That's 25.21 days.
56 incidents
1.1 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.
