California
Lead Service Line Inventory and Replacement Program
Engineering support for water systems to inventory and replace lead service lines under EPA's lead rules.
What the work involves
EPA's Lead and Copper Rule Improvements require community water systems to maintain service line inventories and replace lead and galvanized requiring replacement lines, generally within 10 years with limited exceptions. Engineers help build inventories from records and field verification, prioritize work, design replacement contracts, apply for funding and oversee construction.
Local conditions we plan for
- High seismic hazard and active faults
- Wildfire in the wildland urban interface
- Landslides and debris flows on steep slopes
- Coastal bluff erosion and sea level rise
Building code: California Building Standards Code (Title 24), based on the 2024 IBC and IRC, statewide (ICC adoption chart, April 2026).
When you need it
- Water system must update its service line inventory
- Planning a replacement program
- Applying for state revolving fund or other funding
- Construction oversight for replacements
Frequently asked questions
How much does lead Service Line Inventory and Replacement Program cost?
Across the US, lead Service Line Inventory and Replacement Program usually costs $20,000 to $500,000 per program. Estimate. Depends heavily on system size and number of unknown lines.
How long does lead Service Line Inventory and Replacement Program take?
Plan on Months for inventory; years for replacement from signed proposal to stamped deliverables, longer if a site visit, soil testing or a permit review cycle is involved.
Do I need a licensed PE for lead Service Line Inventory and Replacement Program?
In most US jurisdictions, yes. When the work needs a permit, the plans, calculations or report usually must be sealed by a Professional Engineer licensed in the state where the project is located. Every deliverable we issue for permit is sealed that way.
How do I verify an engineer's license in California?
Engineers practicing in California are licensed by the Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG). You can confirm a license number and its status in the board's public license search before you sign a contract.
Which building code applies in California?
California Building Standards Code (Title 24), based on the 2024 IBC and IRC, statewide (ICC adoption chart, April 2026). Cities and counties can add local amendments, which is one reason to hire an engineer who works in your area.
What site problems do engineers see most in California?
Common issues include high seismic hazard and active faults, wildfire in the wildland urban interface, landslides and debris flows on steep slopes and coastal bluff erosion and sea level rise.