JHW Architects prepared several studies to help the Board of Directors of MRWPCA select this site at Ryan Ranch as the most economical and central for their needs. The resulting 9,883 S.F., two story building completed in 1991 is arranged to handle four separate departments, each with an administrative office. Completed in 2004 was the first of two master planned expansions of the accounting offices, billing department and an expansion and redesign of the boardroom and the staffs break room.

The expansion of the boardroom enabled an angled seating arrangement where all members of the board representing twelve cities, are able to see and discuss with one another the board agenda items.

The addition to the break room essentially enclosed an outdoor patio area, which adjoined the existing break room. The addition was designed as a warm and friendly solarium structure with high ceilings in an open beamed, grid pattern with several skylights and floor to ceiling windows.