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Drinking Water Program
Quick Links
- Compliance and Enforcement
- Public Water System Inspection
- Licensing and Certification
- Drinking Water Resources
- Lead Service Line Inventory
- Financial Resources
- Rules, Policies, and Regulated Contaminants
- Water Sampling and Testing
- Cybersecurity and Resilience
- Forms
- Subsurface Wastewater Unit
Drinking Water Program Sitemap
Drinking Water Orders Information about the types of drinking water orders that are issued when a threat to the public exists from contamination of a public water system's drinking water
Reporting Water test result reporting, monthly operating reports, consumer confidence reports
Revised Total Coliform Rule (RTCR)
Rules, Regulated Contaminants, & Policies Links to Federal and State of Maine drinking water regulations and policies
Sampling Water system sampling, required testing reports, how to collect water samples
Violations & Enforcement Types of violations incurred by public water systems: Maximum Contaminant Level (MCL) exceedances, failure to monitor and report, and treatment techniques
2023 Annual Compliance Report Section 1414(c)(3) of the Safe Drinking Water Act requires States to publish an annual report of violations of the primary drinking water standards. This report provides the numbers of violations in each of six categories: MCL, MRDL, treatment techniques, variances and exemptions, significant monitoring violations, and significant consumer notification violations.
• Report Summary (PDF)
• Report Narrative (PDF)
• Full Report (PDF)
Updated 7/1/2024
What is a Public Water System? Definitions and examples of public water systems and types of public water systems.
New Well and New Source Approval Steps for obtaining approval of a new public water system, or approval for a new well or new source for an existing public water system.
Treatment Addition, removal, and changes to drinking water treatment, treatment system maintenance, water treatment chemicals, and treatment failures.
Technical Assistance Information on technical assistance available to public water systems.
Seasonal Water Systems Resources for seasonal water systems such as campgrounds, golf courses, sporting camps, and ski areas.
Updated 1/4/2023
Source Water Protection Guidance, resources, and information for protecting drinking water sources and preventing contamination
Emergency Response Resources Resources for responding to emergencies, such as severe weather events, loss of pressure/water, treatment failure, and boil water orders.
Security and Emergency Preparedness Guidance, resources, and information on preparing, implementing, and updating drinking water security and emergency preparedness plans
Cybersecurity and Resilience Guidance and resources to help public water systems protect their digital infrastructure.
Board of Licensure of Water System Operators
Updated 7/10/2024