Tri-City Regional Sanitary District Phase I Wastewater Collection System & Water Reclamation Facility

Gila County, AZ


PACE is currently 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. The 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 are under violation by the Gila County Health Department.


With growing concern for the area residents, TRSD is taking action to provide upgraded infrastructure that will bring value to its community. The proposed wastewater project will abandon existing cesspools and septic systems and install over 35 miles of sewer pipeline, lift stations, and a new 0.5 MGD advanced water reclamation facility. The project is being funded by the USDA-RD and WIFA. PACE has been supporting funding efforts by developing a Preliminary Engineering Report Amendment and assisting TRSD in the assessment district process.


PACE has used 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 collections system and evaluating different locations for the proposed new wastewater treatment facility.


Key Features:

  • Wastewater infrastructure planning & design
  • US Department of Agriculture-Rural Development (USDA-RD) Funding
  • Sewer collection design
  • Sewer pump station design
  • 5 MGD MBR Water Reclamation Facility
  • Septic to sewer conversion

Tri-City Regional Sanitary District

GIS Water Resource Applications, Wastewater Infrastructure