Latest Testing Results

• Lead and Copper Monitoring: The most recent comprehensive testing in 2022 showed Chandler’s water system remains in full compliance with EPA regulations, with lead levels at 3.4 ppb (90th percentile) and copper at 0.11 ppm, both well below federal action limits.
• Testing Scope: Chandler performs over 36,500 water quality tests annually across all treatment facilities and distribution points, meeting all regulatory requirements to ensure the highest safety standards.
• Compliance Status: All water quality parameters consistently meet or exceed federal and state drinking water standards, with the city maintaining an exemplary compliance record with EPA and Arizona Department of Environmental Quality regulations.

Water Sources

• Surface Water (67% of supply): Treated water from Salt and Verde Rivers (42% via Pecos Water Treatment Plant) and Colorado River water (25% via Santan Vista Water Treatment Plant), providing renewable water supplies from regional watersheds.
• Groundwater Wells (33% of supply): Over 30 active wells accessing deep aquifers beneath Chandler, primarily used during peak demand periods and as backup supply during surface water shortages or maintenance.
• Source Water Protection: Comprehensive watershed management and aquifer protection programs, including backflow prevention, stormwater pollution control, and collaboration with regional water agencies for long-term sustainability.

Advanced Treatment Technology

• Pecos Water Treatment Plant: State-of-the-art facility employing conventional treatment processes including coagulation, flocculation, sedimentation, filtration, and chlorine disinfection, with advanced monitoring for taste and odor control.
• Santan Vista Water Treatment Plant: Joint facility with Gilbert utilizing ballasted flocculation technology for rapid treatment (20-25 minutes), treating Colorado River water with enhanced filtration and disinfection processes.
• Groundwater Treatment: All groundwater sources receive chlorine disinfection before distribution, with corrosion control measures to prevent lead and copper leaching from plumbing systems.

Infrastructure Modernization

• Reclaimed Water Infrastructure: Recent completion of a $45 million Reclaimed Water Injection Facility, treating 11 billion gallons annually and supporting aquifer recharge programs to enhance long-term water security.
• Distribution System Excellence: Comprehensive asset management program maintaining over 1,000 miles of water mains, with systematic replacement and modernization prioritized by condition assessment and performance metrics.
• Smart Water Management: Advanced SCADA systems providing real-time monitoring and control of water quality, pressure management, and system efficiency throughout the 240-square-mile service area.

Customer Protection Initiatives

Chandler Water provides comprehensive customer service through various programs, including water quality testing support, conservation assistance, and transparent communication via annual Consumer Confidence Reports. The city’s accredited Public Works and Utilities Department maintains some of the lowest water rates among major Valley cities while delivering exceptional service quality. Educational programs help residents understand water conservation, source protection, and the value of Arizona’s precious water resources. Chandler’s proactive approach to drought planning, PFAS monitoring, and infrastructure investment demonstrates its commitment to providing safe, reliable drinking water while preparing for future challenges including climate change, population growth, and evolving water quality regulations.