Hogsmill Sewage Works : dry outfall

May: no water leaving  the sewage outfall
 80% of the water in the Hogsmill above the site in the photographs - the Hogsmill Sewage Works outfall - is actually treated sewage effluent. The rate of discharge can be demonstrated on the left hand side. This is only the second time in twenty years I have ever seen a dry outfall. What are the consequences for the resident fish and invertebrates of a drying river channel ? (as per the May photograph). 

What are the knock-on effects for kingfishers, who depend  on feeding their young on a diet of small fish and invertebrates (small crustaceans etc). One guaranteed consequence is that pollution from the many misconnected drains along the water course will have a much greater impact on both water quality and river ecology.

More 'rag' apparent


Popular posts from this blog

Thames Water fined for 'catastrophic incident leading to an avalanche of foul waste'.

Fishing the Hogsmill

Tolworth's open land is shrinking