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.
Dwr Cymru Welsh Water is highlighted in the plot below
Monmouthshire polluted for 6,266 hours, into Mounton Brook
278 incidents
That's 8.7 months.
5.3 times a week, on average
Gower polluted for 5,302 hours, into Burry Pill
253 incidents
That's 7.36 months.
4.9 times a week, on average
Neath and Swansea East polluted for 5,190 hours, into River Dulais
258 incidents
That's 7.21 months.
5 times a week, on average
Caerfyrddin polluted for 4,812 hours, into River Marlais
256 incidents
That's 6.68 months.
4.9 times a week, on average
Vale of Glamorgan polluted for 4,778 hours, into River Ewenni
211 incidents
That's 6.64 months.
4.1 times a week, on average
Montgomeryshire and Glyndwr polluted for 4,270 hours, into River Twymyn
190 incidents
That's 5.93 months.
3.7 times a week, on average
That's 2.58 years!
2,232 incidents
On average 6.1 times a day
That's 1.87 years!
2,173 incidents
On average 6 times a day
That's 1.71 years!
1,761 incidents
On average 4.8 times a day
That's 1.69 years!
2,014 incidents
On average 5.5 times a day
That's 1.4 years!
1,449 incidents
On average 4 times a day
That's 1.37 years!
793 incidents
On average 2.2 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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org
