Membership in the Water Design-Build Council is open to any private-sector company engaged in integrated design and construction services or construction management-at-risk (CMAR). A company must function in the capacity either as a prime contractor or under a risk-sharing arrangement with a partner. In providing these services, the company must have demonstrated in-depth, in-house comprehensive engineering capabilities to design and build public or private (investor-owned), rate-regulated utility water or wastewater treatment infrastructure facilities in North America.

WDBC membership categories are regular and allied. Regular membership is related to the gross revenues generated from design-build and CMAR water and wastewater infrastructure projects in North America in the prior calendar year. Revenue categories are based on those greater than $80 million, between $80 and $40 million, and those less than $40 million per year.

Each member firm in the Regular category designates an individual to represent the member firm in all respects and matters related to the Council, including, but not limited to: (a) a seat on the Board of Directors and is accorded full voting privileges or consenting to action through meetings, and (b) becomes eligible to become nominated for an officer position after one year of participation, Regular Member firms also designate an individual as alternate to the designated representative, to act in its behalf and represent the member firm’s interest in the absence of the designated representative. The alternate participates in board meetings and committee activities; and in the absence of the designated representative, the alternate is accorded full voting privileges.

An Allied membership is a legal entity including subsidiaries or divisions thereof, that: (i) is engaged in or has the professional and technical capabilities to provide  engineering and design services that support or are ancillary to the provision of design-build project delivery services to public  or private entities (including investor-owned rate regulated utilities) for water and wastewater projects  in North America; (ii) support the  mission and objectives of the Council;  (iii) is not otherwise eligible for regular membership in the Water Design-Build Council; and (iv) receives (less than) $20 million per year in revenue for design and engineering services for water and wastewater projects. An Allied Member must also comply with all policies enacted by the Council, and abide by the Antitrust guidance