Kearny STP - Advanced Wastewater Treatment Plant in Kearny, Arizona

Kearny STP is an advanced wastewater treatment facility located in Kearny, Arizona, serving a small population of about 1,950 residents. The plant is situated in Pinal County, an inland region with a semi-arid climate, and plays a key role in managing municipal wastewater for the local community. The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,324.89 megaliters per year and an actual discharge volume of 605.67 megaliters per year, the facility operates well within its capacity. As a US plant, it is subject to the Clean Water Act and likely operates under an NPDES permit issued by the Arizona Department of Environmental Quality, ensuring compliance with discharge limits. The treated effluent is discharged into the local watershed, which ultimately drains into the Gila River basin and then to the Colorado River. This water body supports diverse aquatic life and is important for regional water supply. The advanced treatment helps protect downstream ecosystems and water quality in this arid region.

The plant discharges into the Gila River watershed, which flows into the Colorado River and eventually the Gulf of California. This arid region relies heavily on surface water for irrigation and municipal use, making the protection of water quality critical. The advanced treatment helps minimize nutrient loading and supports the ecological health of downstream aquatic habitats.