Wastewater Treatment Plants

The San Antonio River Authority (SARA) began providing wastewater utility services in 1966. Today, SARA has six permitted active wastewater treatment plants and one permitted but not operational, wastewater facility.

Permitted, active wastewater treatment plants:

The below waste water treatment plants have a combined capacity of over 10 million gallons per day (MGD).

  • Upper Martinez- Martinez I
  • Martinez II
  • Martinez III
  • First Responders Academy *Information coming soon
  • Salatrilllo
  • US 181

Martinez I Map

Upper Martinez

 

 

Upper Martinez-Martinez I Wastewater Treatment Plant (WWTP)

Average Daily Flow 1.704 MGD

Permitted Flow 2.21 MGD

Number of Customers  Served

  • Approximately 9,800 customers

Location of Customers Served

  • Woodlake, Ventura, and Camelot subdivisions located in northeast Bexar County

San Antonio River Authority’s (SARA’s) Utilities Department maintains the collection system, which consists of:

  • 1,737 man holes
  • Foster Road Lift Station
  • 117.75 miles of collection line

Note: The Upper Martinez Treatment Plant and service system, operations and maintenance, facilities expansions and system administration costs are totally funded by impact fees, interest income on utilities funds, hay sales, and uniform user rate charges.

Martinez 2 Map

Martinez II

Martinez II Wastewater Treatment Plant (WWTP)

Average Daily Flow 1.828 MGD

Permitted Flow 3.50 MGD

Number of Customers  Served

  • Approximately 5,100 customers

Location of Customers Served

  • Woodlake and Ventura subdivisions located in northeast Bexar County

San Antonio River Authority’s (SARA’s) Utilities Department maintains the collection system, which consists of:

  • 901 man holes
  • 48.3 miles of collection line

Martinez III Map

Martinez III Wastewater Treatment Plant (WWTP)

Average Daily Flow 0.004 MGD

Permitted Flow 0.150 MGD

Number of Customers  Served

  • Approximately 54 customers

Location of Customers Served

  • Parc of Escondido subdivisions in northeast Bexar County

San Antonio River Authority’s (SARA’s) Utilities Department maintains the collection system, which consists of:

  • 8 man holes
  • 1.7 miles of collection line
  • Martinez III will temporarily service the Graytown Road Wastewater Treatment Plant development

Salatrillo Map

Salatrillo WWTP

 

Salatrillo

Average Daily Flow 4.507 MGD

Permitted Flow 5.83 MGD

Number of Customers  Served

  • Approximately 17,000 customers

Location of Customers Served

  • Wholesale Contracts with Cities of Converse, Live Oak and Universal City
  • Residential- Camelot Subdivisions

San Antonio River Authority’s (SARA’s) Utilities Department maintains the collection system, which consists of:

  • 407 man holes
  • 22 miles of collection line

Note: The Salatrillo Wastewater Treatment Plant and service system, operations and maintenance, facilities expansions, and system administration costs are totally funded by impact fees, interest income on utilities funds, hay sales, and uniform user rate charges.

US181 WWTP

U.S. 181

Average Daily Flow 0.004 MGD

Permitted Flow 0.090 MGD

Number of Customers Served

  • Approximately 38 customers

Location of Customers Served

  • U.S. 181 will services future development in the Butterfield Ranch Subdivision, located in the City of Elmendorf

San Antonio River Authority’s (SARA’s) Utilities Department maintains the collection system, which consists of:

  • 15 man holes
  • 0.76 miles of collection line

Currently, the minimal flow within this service area is being treated by Martinez II or is pumped and hauled. Once future development in the area occurs, this plant will be opened and operational.

Permitted, but not yet operational, wastewater facilitiy:

The below wastewater treatment plant (WWTP) has a total capacity of 2.24 million gallons per day (MGD).

  • Martinez IV

Graytown Rd.

Martinez IV

The Martinez IV Wastewater Treatment Plant is a joint venture between the San Antonio River Authority and MIV developers and will service future development near Graytown Road and I.H. 10 East . Currently, the minimal flow within this service area is being treated by Martinez II or is pumped and hauled. Once future development in the area occurs, this plant will be opened and operational.

These plants utilize the latest technology to produce a high quality effluent and to preserve the ecosystems into which the effluent is returned.

The wastewater treatment plants and service system, operations and maintenance, facilities expansions, and system administration costs are totally funded by impact fees, interest income on utilities funds, and uniform user rate charges.