The Esther Park works is situated in Kempton Park, in the DD3 drainage district. It is the smallest of ERWAT's 19 wastewater care works with a capacity of 0,4 megalitres per day. It was built in 1979 and is situated adjacent to the Esther Park residential area. This conventional activated sludge process requires chemical addition for phosphate removal, due to its initial design for only carbon and nitrogen reduction. Treated effluent flows into the Modderspruit and eventually into the Jukskei River drainage district.

Capacity : 0.40 Mℓ/d