The WHCRWA’s source of alternative water will be the City of Houston (COH) pursuant to a water supply contract entered into in 2003 and supplemented in 2009 and 2015.

Since 2010, the supply point for COH surface water to the WHCRWA is the COH’s Jersey Village Pump Station located on Fairview Street north of FM 529, west of COH city limits. The water is supplied from the COH’s East Water Purification Plant (EWPP) and conveyed through existing transmission mains. For 2025 and beyond, the additional source of COH water to the WHCRWA will be from the COH’s Northeast Water Purification Plant (NEWPP) located on Lake Houston. The NEWPP is being expanded to meet the needs of the WHCRWA, other authorities, and the COH for 2025 and 2035 conversion mandates.

The WHCRWA transmission system was designed to provide adequate water to meet the requirements for conversion to surface water as set forth by the HGSD, which are 30 percent conversion by 2010, 60 percent conversion by 2025, and 80 percent conversion by 2035.

During the construction to meet the 2010 requirements, the WHCRWA built a booster pump station and ground storage tanks in the immediate vicinity to accept the water and boost the system pressure. Transmission lines within the system were designed to provide the average day, peak day, and peak hour flow. Residential fire demands were also considered.

Prior to 2010, the WHCRWA purchased from the COH a total capacity of approximately 28.25 million gallons per day. By 2010, construction of the entire first phase was completed, and the WHCRWA continues to meet the HGSD conversion requirements of 30% alternate water.

The 2010 service area is generally the area bounded by Highway 290 on the north, Brittmoore on the east, Clay Road on the south and Barker-Cypress on the west. The WHCRWA began delivering surface water in 2005.