Sydenham Pit & Drainage Pumping Station 1 is a heritage-listed pumping station and stormwater drain in Garden Street, Marrickville, Inner West Council, Sydney, New South Wales, Australia. The facility is located adjacent to the railway line running between Sydenham railway station and St Peters railway station. It was designed by the NSW Public Works Department, which built the project from 1935 to 1941. It is also known as Sydenham Stormwater Basin and Drainage Pumping Station (DPS1). The property is owned by Sydney Water. It was added to the New South Wales State Heritage Register on 15 November 2002.