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The Southeast Water Purification Plant Phase I 80 MGD expansion completed in 2011 was the largest city of Houston project undertaken, at $168 million. The capacity expanision was needed not only to increase the water available to the 1.4 million customers in the southeastern portion of Houston and seven adjacent municipalities, but to also satisfy a deadline-driven subsidence district mandate to reduce groundwater use. Teamwork, coordination, the "unexpected" and innovations were trademarks of this most successful project spanning three years, hurricanes (even snow days in Houston!), and 14 acres. And it involved 11 stakeholder groups (nearby municipalities, water districts and other cities).
Treatment Module Two included the construction of four new flocculation and sediment basins, seven new filters, blower systems, high service sump station 2,750 horsepower split-case pump and variable frequency drive, transfer and backwash waste pump stations, chemical storage, chemical treatment facilities; installation of an upgraded SCADA system and site security system and main plant entrance; electrical and instrumentation; 2,100 LF of 96” waterlines; a new 13.4 million gallon precast ground storage tank; two new 100 ft. diameter thickeners; and new sample pump buildings; and modifications to two existing lift stations and the chlorine system. The project was completed ahead of schedule and with $200,000 savings to the owner.