Mount Calm WWTP - Secondary Treatment Plant in Mount Calm, Texas

Mount Calm WWTP is a municipal wastewater treatment plant located in Mount Calm, Texas, a small community in Hill County. The facility serves a population of 320 and operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 136.27 thousand gallons per day and an average discharge volume of 34.07 thousand gallons per day, the plant operates well below its capacity, indicating room for future growth. Treated effluent from the plant is discharged into local streams that drain into the Brazos River basin, a major river system in Texas. The Brazos River flows southeast to the Gulf of Mexico, supporting diverse aquatic life and providing water for agriculture and communities downstream.

The plant discharges into small tributaries that feed the Brazos River, which flows through central Texas to the Gulf of Mexico. The Brazos River basin supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. The plant's secondary treatment helps protect water quality in this ecologically important watershed.