TRSD Phase I Wastewater Collection and Water Reclamation

Gila County, AZ


PACE is providing master planning, engineering design, and funding support services for a new regional wastewater system for the Tri-City Regional Sanitary District (TRSD) in Gila County, AZ. TRSD encompasses over 5 square miles of residential, commercial, industrial, and mining property between the areas of Miami and Globe, AZ. Developed in the early 1900s as a mining town, about 80% of the almost 2,000 homes in the service area use cesspools and septic systems for wastewater disposal, many of which were functioning below ideal performance or completely out of service.


The proposed wastewater project abandoned the existing cesspools and septic systems and installed over 35 miles of sewer pipeline, lift stations, and a new 0.5 million gallons per day (MGD) advanced water reclamation facility. The project was funded by the U.S. Department of Agriculture-Rural Development (USDA-RD) and the Water Infrastructure Finance Authority (WIFA). PACE supported the funding efforts by developing a Preliminary Engineering Report Amendment and assisting TRSD through the assessment process.


PACE has used Geographic Information Systems (GIS) extensively in the wastewater planning process for both engineering and funding services. GIS was used to import parcel data, land use information, and property ownership. GIS also provided topographic data for mapping the new sewer collection system and evaluating different locations for the proposed new wastewater treatment facility.


Key Features:

  • Wastewater infrastructure planning and design
  • USDA-RD funding
  • Sewer collection design
  • Sewer pump station design
  • 0.5 MGD water reclamation facility
  • Septic to sewer conversion

Tri-City Regional Sanitary District

GIS Water Resource Applications, Wastewater Infrastructure