Darlington WWTP - Advanced Wastewater Treatment in Darlington, Indiana

Darlington WWTP is a municipal wastewater treatment plant located at 4550 SR 47 in Darlington, Montgomery County, Indiana. It serves a small population of 842 residents, reflecting the rural character of the area. The plant operates under the regulatory framework of the US Clean Water Act, which requires NPDES permits for all point source discharges. The facility provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants. Its designed capacity is 340.69 million gallons per year, matching the current discharge volume, indicating the plant is operating at full capacity. This level of treatment is typical for plants discharging to sensitive water bodies. The treated effluent is released into local streams that drain into the Wabash River basin, ultimately reaching the Ohio River and Mississippi River. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the region.

The plant discharges into small streams that flow into the Wabash River, a major tributary of the Ohio River. The Wabash River supports diverse aquatic life, including fish species such as bass and catfish, and provides habitat for migratory birds. The advanced treatment helps reduce nutrient loading, which is critical for preventing algal blooms in downstream waters.