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Carlisle to publish public map of water service‑line materials after EPA rule updates; 2,800 addresses remain unknown
Summary
Water staff updated council on the borough's lead service‑line inventory required under recent EPA lead and copper rule revisions, saying about 60% of service lines are classified, roughly 2,800 remain unknown and a public ArcGIS map will be released to prompt homeowner reporting.
Borough water staff briefed council on progress toward complying with the U.S. Environmental Protection Agency’s updated lead and copper rule and on the borough’s lead service‑line inventory requirements.
Staff said the EPA rule revisions promulgated in 2021 and 2024 require public water systems to identify service‑line materials on both the utility and customer sides, to submit an initial inventory to the Pennsylvania Department of Environmental Protection and to replace all lead and galvanized service lines within ten years with a minimum annual replacement rate of 10 percent. Staff explained Carlisle owns the service line from the water main to the curb stop; the portion from the curb stop onto private property is the customer’s responsibility.
Presenters said staff began inventory work by comparing borough and county building and plumbing records against a 1958 borough plumbing code that required copper service lines. Using those records and outreach steps (utility bill mailings, the 2024 consumer confidence report, social media), staff has classified about 60 percent of service lines; they estimate about 2,800 addresses remain unknown. DEP required documentation for identifications; staff said DEP currently requires three points of evidence but is proposing to accept a single point of evidence, which would allow the borough to classify more lines from responses already received.
To encourage owner reporting, the borough will publish a publicly facing ArcGIS map this month showing service‑line status by address (system side and customer side). Staff plans door‑to‑door downtown inspections this fall and said they will continue to compile funding options for eventual replacement work. Presenters reminded landlords and tenants that each consumer on a branched service line must receive notification and that tenants who receive billing can submit information directly to the borough.
No replacement schedule was set at the workshop. Staff said the borough will submit its 2025 inventory update to DEP by the October 31 deadline and continue outreach to reduce the number of unknowns.
