Lead Pipe Data by Area — Colorado
10 areas across Colorado with enough data for a dedicated breakdown.
- Arvada (42,305)
- Aurora (99,700)
- Boulder (28,077)
- Brighton (13,775)
- Denver (311,489)
- Grand Junction (9,435)
- Greeley (29,158)
- Parker (19,062)
- Pueblo (43,115)
- Westminster (33,013)
Lead pipe replacement law in Colorado
Colorado has not set its own state-specific lead service line replacement deadline beyond the federal requirement below. The rule is implemented through the Colorado Department of Public Health and Environment's Water Quality Control Division under Regulation No. 11 (5 CCR 1002-11.26), which required every public water system to submit a baseline inventory by October 16, 2024 as part of the federal Lead and Copper Rule Improvements, rather than setting an earlier state-specific replacement date.
Separately from any state law, the EPA's federal Lead and Copper Rule Improvements require every water system nationwide to submit a baseline inventory and an approved replacement plan by November 1, 2027, then fully replace all lead and "galvanized requiring replacement" lines under its control on a schedule of 10 years or less from that date, replacing at least 10% of its known lead/GRR lines per year. A narrow exception allows a longer schedule only for the roughly 1% of systems with an unusually dense concentration of lead lines, and partial (non-emergency) replacements are prohibited.