eHT provided project management, design and construction administration for the original transmission lines to carry treated water from the City of Missouri City’s (City) new surface water treatment plant (SWTP) to utility districts for distribution and has continued to assist in the expansion of the system throughout its lifetime.  Phase I of the project served the Sienna Plantation MUDs and consisted of 12,900 linear feet (LF) of 30-inch PVC line to the south, 7,585 LF of 36-inch PVC line to the north, a parallel 10-inch PVC reuse line to the south for 6,680 LF, and a parallel 16-inch PVC well supply line to the north for 9,050 LF.  Phase II in 2015 expanded the north part of the system to reach Fort Bend County MUDs 46, 149 and 115/129. The new transmission lines ranged from 8-inch to 36-inch and were adequately sized to allow for future extensions to the other utility district water plants in the area as the SWTP is expanded.  Phase III in 2016 was constructed to serve the new water plant within the Sienna Plantation MUD in the south part of the system.  A 24-inch HDPE line was extended for a length of 12,000 LF as well as the necessary pump upgrades in the City’s SWTP.  Phase IV recently kicked off and eHT is working on preliminary design to expand the north system to reach the Mustang Bayou Service Area.