Pagosa Springs WWTP - Secondary Treatment Facility in Pagosa Springs, Colorado

Pagosa Springs WWTP is a municipal wastewater treatment plant located in Pagosa Springs, Colorado, United States. The facility serves a population of approximately 4,600 residents and operates under secondary treatment standards, which is the minimum required by the US Clean Water Act for municipal wastewater treatment. The plant has a designed capacity of 2,271.24 volume units and currently discharges 794.94 volume units, indicating it operates well below its capacity. As a US facility, it is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the San Juan River basin, part of the Colorado River system. This watershed supports diverse aquatic life and provides water for downstream communities and ecosystems in the arid Southwest.

The plant discharges into a tributary of the San Juan River, which flows into the Colorado River and eventually to the Gulf of California. The San Juan River basin supports a variety of fish species, including the endangered Colorado pikeminnow and razorback sucker. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting downstream water quality in this ecologically sensitive arid region.