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.
Anglian Water is highlighted in the plot below
North West Cambridgeshire polluted for 2,957 hours, into Counterdrain River Nene T
236 incidents
That's 4.11 months.
4.5 times a week, on average
South Cambridgeshire polluted for 2,935 hours, into River Rhee
172 incidents
That's 4.08 months.
3.3 times a week, on average
South Cambridgeshire polluted for 2,637 hours, into Unnamed Culverted Watercourse
125 incidents
That's 3.66 months.
2.4 times a week, on average
Central Suffolk and North Ipswich polluted for 2,479 hours, into River Gipping
131 incidents
That's 3.44 months.
2.5 times a week, on average
Sleaford and North Hykeham polluted for 2,263 hours, into River Brant
117 incidents
That's 3.14 months.
2.2 times a week, on average
That's 9.78 months.
1,146 incidents
On average 3.1 times a day
That's 7.5 months.
480 incidents
On average 1.3 times a day
That's 6.44 months.
527 incidents
On average 1.4 times a day
That's 5.39 months.
323 incidents
6.2 times a week, on average
That's 5.33 months.
428 incidents
On average 1.2 times a day
That's 5.25 months.
431 incidents
On average 1.2 times a day
That's 28.38 days.
131 incidents
2.5 times a week, on average
That's 4.12 days.
56 incidents
1.1 times a week, on average
That's 4.08 days.
69 incidents
1.3 times a week, on average
That's 3.88 days.
39 incidents
3.2 times a month, over the year
That's 3.67 days.
121 incidents
2.3 times a week, on average
That's 2.79 days.
10 incidents
0.8 times a month, over the year
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.
