ERWAT has successfully divided its whole area of operation into drainage districts, namely:

DD3 Northern Drainage District
Benoni
Esther Park
Hartebeestfontein
Olifantsfontein
Rynfield

DD4 Upper Blesbokspruit Drainage District
Ancor
Daveyton
Jan Smuts
JP Marais
Welgedacht

DD5 Lower Blesbokspruit Drainage District
Carl Grundlingh
Heidelberg
Herbert Bickley
Ratanda
Tsakane

DD6 Rietspruit Drainage District
Dekema
Rondebult
Vlakplaats
Waterval