Membership is open to all bodies in the following categories:
- Member: any autonomous water supply and sanitation regulatory body Members may serve on appointed committees, host the Annual General meeting, vote at the Annual General Meeting, hold office, participate in all Strategic Plan activities and have access to all documents and publications of the ESAWAS Regulators Association.
- Associate Member: any Government department undertaking water supply and sanitation regulatory activities An Associate Member may serve on appointed committees, host an Annual General Meeting, participate in some Strategic Plan activities and have access to some documents and publications of the ESAWAS Regulators Association as determined by the Annual General meeting or Executive Committee from time to time.
- Affiliate Member: any other regulatory partner An Affiliate Member may participate in some Strategic Plan activities and have access to some documents and publications of the ESAWAS Regulators Association as determined by the Annual General meeting or Executive Committee from time to time.
Observers: Any institution or person can also be invited or apply to attend the Annual General Meeting as Observers. An institution or person shall only be allowed observer status for three consecutive Annual General Meetings and thereafter must apply for membership in the applicable category or cease to participate in the Annual General Meetings.
Observers may only participate in Annual General Meetings and have access to some documents and publications of the ESAWAS Regulators Association as determined by the Annual General meeting or Executive Committee from time to time.