481 

 

20 million gallons a day of water that meets contractual water quality standards with sodium levels not 
to exceed 125 mg/l.   

Regularly hosts tours of the Scottsdale Water Advanced Water Treatment Facility to educate media, 
industry peers, stakeholders, students and customers about the value of recycled water as a vital 
component of Scottsdale’s long-term water supply and the importance of investing in advanced recycled 
water treatment technologies to preserve the integrity of groundwater aquifers.   

Participates in the Sub-Regional Operating Group (SROG), a five-city partnership that provides recycled 
water to the Palo Verde Nuclear Generation Plant, which is the only nuclear power plant in the world 
that uses treated effluent. Recycled water from SROG also supports agricultural irrigation and the 
wetlands development. The Tres Rios wetlands provide additional water quality polishing and serve as 
an educational and recreational site for the public.   

Scottsdale’s Water Quality Laboratory developed in-house capabilities to analyze for emerging 
contaminants including endocrine disrupting compounds. As part of a collaborative effort, data was 
provided to the operations/treatment group illustrating contaminant removal through each stage of the 
treatment process to demonstrate treatment effectiveness and efficiency.  This knowledge enables 
decision making about the best use of each treatment train, and can demonstrate to the public the 
City’s commitment to aquifer protection.  

Administers the only rebate and education program in Arizona to incentivize water softener removal as 
a means of addressing high salinity levels entering the Scottsdale wastewater stream. The salinity, which 
is not removed in standard wastewater treatment processes, must be reduced before it can be 
discharged to the environment, either through turf irrigation or aquifer recharge.  

Performance Measures and Results