About Us

The wastewater division at the City of Grand Junction is responsible for managing and treating the city's wastewater. The Persigo wastewater treatment plant is the largest treatment works in the western rocky mountain region, with a capacity of 12.5 million gallons per day (mgd). This facility uses advanced technologies such as biotrickling filters for odor control, primary clarifiers, aeration basins, anaerobic digesters, UV disinfection, and an effluent diffuser to treat wastewater to a high standard.

The division has undertaken innovative projects such as developing renewable natural gas from wastewater treatment to be used as vehicle fuel, expanding treatment plant capacity, and developing biosolids beneficial reuse programs for the community.

The division is also responsible for maintaining and operating the extensive sewer network of the city and county, which includes over 600 miles of sewer lines and 26 lift stations. The 40 professionals in the wastewater division are organized into five teams: collections, operations, maintenance, laboratory, and industrial pretreatment. These teams work collaboratively to ensure that the city's wastewater is managed efficiently and effectively, with minimal impact on the environment.

Overall, the wastewater division at the City of Grand Junction is committed to providing high-quality wastewater treatment services to the community, while also embracing innovative technologies and practices to promote sustainability and environmental stewardship.  At the City of Grand Junction, we are committed to promoting sustainability and environmental stewardship, and we believe that our wastewater treatment plant plays a critical role in achieving these goals.

The Persigo Wastewater Plant lit up by an early morning sunrise