Copan Public Works Authority

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The Copan Public Works Authority (Authority) located in Washington County serves 363 sewer customers and 365 water customers. According to the 2010 U.S Census the population was 733. The Authority received 100% loan forgiveness for planning and design of this project.

The Authority’s current treatment process is lagoon and aerated batch clarifier. The design average daily flow is 0.13 MGD, and the receiving waterbody is Copan Creek, a tributary to Copan Lake which is listed on the 303(d) list for chlorophyll-a, mercury, and turbidity.

The Authority is currently under a consent order for total suspended solids and biochemical oxygen demand limit violations at its wastewater treatment plant and collection system due to inflow and infiltration (I & I) issues. In order to address the consent order task requirements, the Authority will use the funds for planning and design of sewer system rehabilitation which will determine areas where I&I is an issue.

Once the project is completed, correction of I&I will help reduce unintended flows to the wastewater treatment plant and reduce sanitary sewer overflows.