Drinking Water Protection
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Environmental Health Division
Community Inventory and Replacement Plan Submittal
For Community Public Water Systems
Service line inventory instructions
All Public Water Systems must complete and submit to the state a lead service line inventory by October 16, 2024.
The Lead and Copper Rule Revisions require public water systems to identify the service line (SL) materials of all service connections in their distribution system regardless of ownership status. The rule determines the minimum information required to be needed in your lead service line (LSL) inventory, how to communicate about your system inventory, and how often to update the inventory. It may be more useful to the system while conducting their inventory to gather additional or more detailed information than required and we have provided a simple spreadsheet with required information needed for compliance and a detailed spreadsheet with information we recommend water systems complete and keep on hand to be prepared for customer questions, asset management, or future rule revisions.
Systems with more than 10,000 connections must contact MDH prior to submitting the LSL inventory. The system and MDH will consult regarding the best way to submit the necessary data to MDH. MDH can be contacted at Health.LSLinventory@state.mn.us.
Single ownership means that the service line is owned entirely by either the public water system or the property owner. There is no shared responsibility for the service line. Systems can choose to submit either the simple version or the detailed version depending on system needs.
- Single Ownership-Simple MDH Lead Service Line Inventory Template Instructions (PDF)
- Single Ownership-Detailed MDH Lead Service Line Inventory Template Instructions (PDF)
Download the selected Microsoft Excel inventory template. Save a copy to your computer or network drive. A recommended name example is "LSL Inventory-Copper City MN12345678".
When the inventory is complete and you are ready to submit to MDH, email the template spreadsheet to MDH at Health.LSLinventory@state.mn.us.
MDH will review your submittal and contact you if any follow up is needed.
Within 30 days of completing the service line inventory systems must notify consumers served by lead, galvanized requiring replacement and unknown service lines.
Templates and tools
Other MDH Resources for Lead in Drinking Water
- Lead in Drinking Water
- Lead and Copper Rule Revisions
- Drinking Water Revolving Fund General Information