A Sydney builder who pumped untreated sediment-laden water into storm drains which flowed into Coogee Beach has been fined more than $8500.

A Sydney builder who pumped untreated sediment-laden water into storm drains which flowed into Coogee Beach has been fined more than $8500.

Randwick City Council officers traced the source of the pollution after beach-goers at Coogee reported seeing cloudy water coming from a stormwater pipe on February 20.

Randwick City Council officers traced the source of the pollution after beach-goers at Coogee reported seeing cloudy water coming from a stormwater pipe on February 20.