Refine and validate service line inventory
CDM Smith reviewed and refined material records for approximately 500,000 service lines, strengthening data accuracy to support prioritization and regulatory compliance
Priorities
From corrosion control research to an actionable, citywide replacement roadmap
Chicago faces one of the largest lead service line challenges in the United States, with hundreds of thousands of service lines requiring identification, prioritization and replacement. Since 2018, CDM Smith has served as the City’s key advisor on lead corrosion control and Lead and Copper Rule compliance. The role expanded to include development of a comprehensive lead service line inventory, a phased replacement plan, and direct support for early program implementation, public engagement and funding strategies to advance Phase I and Phase II of the city’s LSLR program.
Develop phased replacement strategy
The team created a flexible LSLR prioritization and phasing framework that adapts to funding availability, timelines and equity considerations
Secure funding for large-scale delivery
CDM Smith supported financial analysis and applications that helped secure funding through SRF, WIFIA, WIIN and other sources for program implementation
Lead public outreach and pilot programs
CDM Smith supported working groups, educational materials, and pilot LSLR programs including equity-based, daycare, watermain and leaks/breaks initiatives
Through multi-year advisory and implementation support, CDM Smith helped Chicago move from planning to action on lead service line replacement. The work established a comprehensive LSL inventory, launched Phase I successfully, and enabled multiple targeted pilot programs addressing equity, vulnerable populations and construction methods. Funding secured through federal and state programs allowed the City to advance replacement efforts while supporting low-income homeowners. Together, these efforts created a scalable, community-informed framework that continues to guide Chicago’s progress toward a safer, lead-free water system.
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