As recently as 2010 ducks sat on the clear water of his beloved local river – with healthy green weeds growing beneath the surface. But today that is just a memory, compared to the muddy brown murk of the Windrush, in Oxfordshire.
Untreated sewage is being spilled into the river by Thames Water.
The company has admitted this filth pouring in for 3,644 hours on 228 occasions from four of the sewage works along the river.
Mr Smith, 63, who founded Windrush Against Sewage Pollution, said: “Plant-life is being choked out of existence by sewage fungus and algae.
“Some species of fish such as barbel and grayling are struggling to breed.

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“But it’s more profitable to pollute than to act sustainably.”
He warned things will get worse. He said: “Our rivers are in a dismal state. They are in a state of emergency as countless new houses are connected to an already failing sewage system.”
Mr Smith first got involved when he saw the decline in the Windrush and was disappointed by the response from the government body supposed to protect rivers.
He said: “The Environment Agency has been debilitated by Defra which had made it impossible for it to be effective and the water industry exploits this.
“Polluting is profitable. That has to come to an end.”
A Water Quality Analysis Simulation Program showed that 95 per cent of illegal sewage spills to watercourses from Thames Water’s sewage treatment works may go unrecorded by the Environment Agency.
A spokeswoman for the water company said: “It’s our view that discharges of untreated sewage are simply unacceptable, even when they are legally permitted.”
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The Government must act now to stop sewage pollution, says ASHLEY SMITH
The number of rivers in good ecological status in England has fallen to a dismal 16 per cent.
The target was for all of them to be in good status by 2015 which was put back to 75 per cent by 2027. Now even that low target is being abandoned by embarrassed environmental regulators.
It may be a coincidence but in 2009 our water companies, which handle the sewage network, were given the right to monitor themselves and their pollution.
And today our fun water activities risk us getting sick from bacteria in someone else’s sewage, dumped by a multi-million pound water company saving money.
Corner cutting which should have been stamped on at the beginning, crept in and criminal convictions for pollution started to appear on the company books.
It’s shocking but Thames Water, as an example, has 180 criminal convictions. The fines for criminal pollution were laughable for many years, in the low thousands.