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Water & Sewer Utility
1 NW Martin Luther King Jr Blvd
Civic Center Complex, Room 104
Evansville, IN 47708
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East Wastewater Treatment Plant

The East Wastewater Treatment Plant (WWTP) is located on Waterworks Road, near the Ohio River. Treated effluent discharges to the Ohio River. The secondary design capacity of the East WWTP is 18.0 million gallons a day (MGD), while the primary treatment capacity is 34.6 MGD. The existing WWTP includes preliminary, primary, and secondary treatment facilities.

West Wastewater Treatment Plant

The West Wastewater Treatment Plant (WWTP) is located near the Ohio River on the west side of the city on Tekoppel Avenue. Treated effluent discharges to the Ohio River. The secondary design capacity of the West WWTP is 20.6 million gallons a day (MGD), while the primary treatment capacity is 39.5 MGD. The existing WWTP includes preliminary, primary, and secondary treatment facilities.

Lift Stations

Lift stations are used in a gravity collection system to lift (pump) wastewater to a higher elevation when the slope of the route followed by a gravity sewer would cause the sewer to be laid at an insufficient slope or at an impractical depth. Lift stations in Evansville vary in size and type depending on the quantity and height the wastewater is to be lifted.

Evansville has 92 lift stations, which are part of a telemetry system that is constantly monitored for general information or problems such as a high well or power failures. Eight hourly employees and two managers monitor the system 24 hours a day.

Wastewater Laboratory

The Evansville Wastewater Laboratory provides analytical services to both treatment plants year round This assures Evansville that only the best quality of water is returned to the Ohio River. In addition, the Evansville’s Wastewater Laboratory is in charge of monitoring local industrial sewer discharges to see that that meet all applicable standards and requirements. With a staff of six full time individuals, the laboratory completes over 30,000 analyses annually, with over 99% of the analysis being conducted in house.

Residuals

The residuals operation for the City of Evansville is responsible for the disposal of biosolids in compliance with the U.S. Environmental Protection Agency (EPA) and the Indiana Department of Environmental Management (IDEM). The EPA classifies biosolids as “the nutrient-rich organic materials resulting from the treatment of sewage sludge for the protection of public health and the environment, the EPA developed a policy – 40 Code of Federal Regulations (CFR), Part 503 – to govern the disposal and use of municipal sewage sludge. Both agencies encourage the beneficial use of biosolids as land application.