Harrod WWTP and Sewer System - Secondary Treatment Plant in Harrod, Ohio

Harrod WWTP and Sewer System is a municipal wastewater treatment facility located in Harrod, Allen County, Ohio. Serving a population of 761, the plant provides secondary treatment to domestic wastewater from the community. The facility's designed capacity is 340.69 megaliters, with an annual discharge volume of 227.13 megaliters. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges. As a small agglomeration, it is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the Ohio Environmental Protection Agency. The treatment process ensures that effluent meets state and federal water quality standards before discharge. The treated effluent from Harrod WWTP is discharged into local waterways within the Great Lakes Basin. The plant's location in inland Ohio means its discharge ultimately contributes to the Lake Erie watershed, supporting aquatic ecosystems and downstream water quality. Proper treatment helps protect the region's rivers and streams from nutrient pollution and other contaminants.

Harrod WWTP discharges into tributaries of the Auglaize River, which flows into the Maumee River and eventually into Lake Erie. The Maumee River watershed is a major contributor to Lake Erie's nutrient load, making phosphorus removal critical to prevent harmful algal blooms. The plant's secondary treatment helps reduce organic pollutants and suspended solids, supporting the ecological health of the downstream aquatic environment.