Information for . . .

Public Water Systems

Public Water Systems

Water utilities, mobile home parks, nursing homes, schools, factories, restaurants, campgrounds, etc.

Program Partners

Laboratories, training providers, federal and state agencies

Drinking Water Consumers

Public water system customers, private well owners and users

Drinking Water Professionals

Water operators, well drillers, engineers & consultants, oil tank installers, treatment providers, site evaluators, researchers


What's New?

  • Lead & Copper Rule Revision/Lead Service Line Inventories: All Community and Non-transient, Non-community (NTNC) public water systems must develop and submit a comprehensive and accurate inventory of every service line in their distribution system, regardless of whether any lead is present. Inventories must be completed by October 16, 2024. Lead Service Line Inventory templates are now available for download. The DWP encourages all applicable PWS to begin work on their Service Line Inventories as soon as possible. Click here to learn more and start your inventory process.
  • New Grants to Help Address PFAS Contamination: The Drinking Water Program has prepared four new grants intended to help public water systems study or address PFAS contamination issues.  Click here to learn more.
  • Child Care Programs FREE Lead Water Testing Available: Testing for lead in child care drinking water is crucial in protecting children from the many negative effects of lead. To request your FREE lead testing kits and for more information, please visit the Testing for Lead in Child Care Drinking Water page of this website.
  • PFAS Testing in Drinking Water: With the passage of LD 129 in 2021, all community public water systems and non-transient, non-community schools and daycares are required to sample finished water for PFAS. An interim standard of 20 ppt for six PFAS chemicals (alone or in combination) is in effect. More information on PFAS and LD 129 can be found on the Maine CDC Drinking Water Program (DWP) PFAS webpage.
  • Public Water Systems can now view a report of all 2024 compliance samples received and processed to-date by the Drinking Water Program. The reports are updated every weekday. To view samples received for the 2023 compliance year, click here.
  • Cybersecurity Awareness: No matter the size of your public water system, these materials will help take you to a place of increased cyber preparedness: Cybersecurity Tools to Understand, Evaluate, and Mitigate Risks for Maine Public Water Systems (PDF)
  • Updated 2/29/2024