Lead Pipe Data by Area — Connecticut

Lead pipe replacement law in Connecticut

Connecticut has not set its own state-specific lead service line replacement deadline beyond the federal requirement below. The rule is implemented through the Connecticut Department of Public Health, which required every public water system to submit a baseline service line inventory by October 16, 2024 -- matching the federal Lead and Copper Rule Revisions deadline rather than an earlier state-specific date. Systems with confirmed lead service lines must follow a DPH-approved replacement schedule implementing the federal rule.

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.

• Connecticut DPH: Lead in Drinking Water →
• EPA LCRI technical fact sheet: states and public water systems →
• EPA LCRI technical fact sheet: deferred deadlines →