Perry WWTP - Secondary Treatment Plant in Perry, Missouri

Perry WWTP is a municipal wastewater treatment facility located in Perry, Ralls County, Missouri, United States. The plant serves a small population of 691 residents, reflecting its role in a rural community. It operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment as a minimum standard for municipal wastewater discharges. The plant employs secondary treatment processes to reduce organic pollutants and suspended solids before discharge. With a designed capacity of 355.83 units and an average daily flow of 340.69 units, the facility operates near its capacity, indicating consistent demand. The treatment level meets the standard requirements for small communities under the National Pollutant Discharge Elimination System (NPDES) permit program. The treated effluent is discharged into a local waterway that ultimately drains into the Mississippi River basin. The plant's location in inland Missouri means its discharge contributes to the overall water quality of the Mississippi River system, which supports diverse aquatic life and provides drinking water for millions downstream. Proper treatment helps protect these ecological and human uses.

The plant discharges into a tributary of the Mississippi River, which flows south to the Gulf of Mexico. The Mississippi River basin is a major ecological corridor supporting numerous fish species, migratory birds, and aquatic habitats. The plant's secondary treatment helps reduce nutrient loads that could contribute to hypoxia in the Gulf of Mexico, a critical downstream environmental concern.