The data used to develop the map is based on verified records, recent inspections and the year a property was constructed. Material types shown include:
Unknown: When records are missing or unverifiable, or there have been no documented inspections.
Lead: Some or all of the service line is made of lead.
Galvanized steel: Some or all of the service line is made of galvanized steel.
Not lead: The service line is known to be copper or plastic.
Why are some service lines categorized as "unknown"? In Colorado, properties constructed in 1960 or earlier sometimes installed lead or galvanized steel water service lines. Unfortunately, records stating the type of service line material that was used often do not exist or cannot be verified. Currently, Aurora Water has more than 5,000 service lines marked as unknown, which means these lines still need to be inspected to determine what the service line is made of. To view the map, visit AuroraGov.org/Lead.