Scottish Water simply does not monitor the overflows of many of its CSOs, - so the numbers here are artificially low, the real situation is far worse.
Of the 702 CSOs locations we know about for Scottish Water, 452 of them have ZERO reporting.
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.
Scottish Water is highlighted in the plot below
Falkirk polluted for 16,949 hours, into River Carron
280 incidents
That's 1.96 years!
5.4 times a week, on average
Dumfriesshire, Clydesdale and Tweeddale polluted for 8,855 hours, into Biggar Burn
243 incidents
That's 1.02 years!
4.7 times a week, on average
Argyll, Bute and South Lochaber polluted for 7,686 hours, into Clyde Estuary
1,521 incidents
That's 10.68 months.
On average 4.2 times a day
Dumfriesshire, Clydesdale and Tweeddale polluted for 6,945 hours, into River Nith
328 incidents
That's 9.65 months.
6.3 times a week, on average
Dumfries and Galloway polluted for 6,726 hours, into Cluden Water
980 incidents
That's 9.34 months.
On average 2.7 times a day
Argyll, Bute and South Lochaber polluted for 5,518 hours, into Clyde Estuary/Firth of Clyde
57 incidents
That's 7.66 months.
1.1 times a week, on average
That's 2.06 years!
392 incidents
On average 1.1 times a day
That's 1.76 years!
2,090 incidents
On average 5.7 times a day
That's 1.42 years!
2,042 incidents
On average 5.6 times a day
That's 1.02 years!
243 incidents
4.7 times a week, on average
That's 10.73 months.
651 incidents
On average 1.8 times a day
That's 10.37 months.
464 incidents
On average 1.3 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
