Kino Springs WWTF - Secondary Treatment Plant in Kino Springs, Arizona

Kino Springs WWTF is a municipal wastewater treatment facility located in Kino Springs, Santa Cruz County, Arizona. The plant serves a small population of 205 residents, reflecting the rural character of the area. It operates under the regulatory framework of the United States Clean Water Act, which requires secondary treatment for municipal wastewater discharges. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 143.85 megaliters per year and an annual discharge volume of 75.71 megaliters, the facility operates below its capacity. The treatment process meets the requirements for small communities under the National Pollutant Discharge Elimination System (NPDES) permit program. The treated effluent is discharged into the local watershed, which ultimately drains into the Santa Cruz River and then the Gila River system. The plant plays a key role in protecting water quality in this arid region, where water resources are scarce and sensitive to pollution. Its operation supports the health of downstream ecosystems and groundwater recharge.

The plant discharges into the Santa Cruz River watershed, a tributary of the Gila River that flows through southern Arizona. This arid region relies on limited surface water and groundwater, making the plant's treatment essential for protecting aquatic habitats and downstream water users. The Santa Cruz River supports diverse wildlife and migratory birds, and the plant's secondary treatment helps maintain water quality in this sensitive desert ecosystem.