Purissima Hills Water District - Los Altos Hills, CA
Joubin Pakpour, P.E. of Pakpour Consulting Group currently serves as contract District Engineer for Purissima Hills Water District.
The Purissima Hills Water District provides service to two-thirds of the Town of Los Altos Hills, a rural community adjacent to the cities of Palo Alto and Los Altos,and unincorporated Santa Clara Countyto the south. The District serves predominantly single-family homes on minimum one-acre lots. The largest customer is Foothill College.
Purissima Hills Water District receives 100% of its water supply from San Francisco Public Utilities Commission (SFPUC) via two turnouts from the Hetch Hetchy pipeline along the Foothill Expressway on the northern edge of the District. The SFPUC water supply is gravity-fed through 18" transmission mains to two pump stations that pump to tanks distributed throughout the District.
The distribution system consists of 4 pressure zones, 10 tanks, 5 pumping stations, 14 pumps, and 107 miles of pipe. All services within the District are pressurized or gravity fed from tanks in the respective pressure zones. The tanks have a total capacity of 10 million gallons.
Pakpour Consulting Group maintains the District’s distribution hydraulic model in WaterCAD®, develops engineering drawings, standard plans and specifications. Mr. Pakpour works closely with each General Manager and their staff in providing recommendations on all components of the District’s distribution system. Hydraulic modeling ensures proposed improvements will provide adequate fire flows and increase the reliability of the system. Once projects are identified, Pakpour Consulting Group prepares plans, specifications, cost estimates and assists the Districts during the bidding and construction phases. A sampling of projects includes new pump stations, replacement of deteriorating water mains and new storage facilities. Pakpour Consulting Group also reviews subdivision and residential developments for conformance to the recommendations presented in the hydraulic modeling. Mr. Pakpour also serves as a resource to the General Manager and Board Members and meets on a regular basis with developers working within the District to inform them of new District standards and status of plan reviews.
