Tom Neltner, J.D., Chemicals Policy Director and Lindsay McCormick, Program Manager
Illinois is poised to be the second state in the country to strictly limit the practice of partially replacing lead service lines (LSL). Partially – rather than fully – replacing these lines that connect the drinking water main under the street to homes can significantly increase lead levels in drinking water for months and does not reliably reduce lead levels over time. Last week, the Illinois Department of Public Health (IDPH) released amendments to the Illinois Plumbing Code that include significant restrictions on partial LSL replacements. If the state’s legislative oversight committee for rulemaking does not object, the agency can finalize the rule.
If adopted, the changes would set the stage for all LSLs and galvanized service lines in the state to eventually be fully replaced. The changes are significant because the Illinois has an estimated 679,000 LSLs, by far the most in the country, as well as 60,000 galvanized service lines, and an additional 1.07 million service lines of unknown material that may be lead.
Michigan, with its estimated 460,000 LSLs, took a similar action in June 2018 when it strengthened its version of Environmental Protection Agency’s (EPA) Lead and Copper Rule (LCR). However, Michigan’s rule applies only to public water systems (PWS). In contrast, Illinois’s planned revisions apply to anyone who alters a service line including both PWSs and licensed plumbers.
In October, EPA proposed revisions to the LCR. However, unlike Michigan and Illinois, EPA’s proposed rule would continue to allow PWSs to conduct partial replacements where the property owner is unwilling or unable to pay the cost for the portion not owned by the PWS.