Tetra Tech provided master planning, investment decision support, environmental and social impact assessment, and resettlement planning to improve water and sanitation infrastructure in Lusaka, Zambia.

The Government of the Republic of Zambia prioritized access to a clean and safe water supply, adequate sanitation, and drainage in Lusaka as key to Zambia’s economic and social development. The Millennium Challenge Corporation (MCC) has worked with Zambia’s government to achieve these development goals since the country became eligible for MCC assistance in 2008. On behalf of the MCC, under a contract with the U.S. Army Corps of Engineers, Tetra Tech completed several assessments and plans to meet the water, sanitation, and drainage needs of Lusaka’s 190,000 residents and future population growth. These efforts included a sanitation master plan and associated sanitation investment plan (SIMP), an environmental and social impact assessment (ESIA), and resettlement support for approximately 2,000 people affected by the proposed infrastructure construction.

The water, sanitation, and drainage improvements Tetra Tech identified will expand access to and increase the reliability of drinking water and sanitary sewer systems and mitigate flooding in selected urban and peri-urban areas of the City of Lusaka. These projects are expected to increase the Lusaka Water and Sewerage Company’s (LWSC) available water supply from 230 to 240 million liters per day and reduce the utility’s non-revenue water by more than 23 percent. In addition, approximately 150,000 additional people will benefit from the improved water system.

Tetra Tech evaluated LWSC’s 480-kilometers of sewer lines and 13 pump stations to develop a detailed SIMP that identified potential improvement projects for investment. Following the SIMP, Tetra Tech performed an ESIA to identify adverse environmental and social impacts related to the planned projects. These upgrades include construction, replacement, and repair of hundreds of kilometers of water and sewer lines and 24 kilometers of drainage improvements throughout Lusaka.

Tetra Tech provided critical assistance for improving the water supply, sanitation, and drainage infrastructure resulting in poverty reduction and economic growth in Lusaka, Zambia.