Water Rules

The table below lists the rule chapters administered by DEP water programs.  Clicking on the chapter number takes you to the rule on the Secretary of State’s website.  While we have taken care with the accuracy of the files accessible here, they are not "official" state rules in the sense that they can be used before a court. Anyone who needs a certified copy of a rule chapter should contact the Secretary of State’s APA Office.

Ch. 2, Rules Concerning the Processing of Applications and Other Administrative Matters
Ch. 263, Maine Comprehensive and Limited Environmental Laboratory Certification Rules (jointly with 10-144)
Ch. 310, Wetlands and Waterbodies Protection
Ch. 342, Significant Groundwater Wells
Ch. 380, Planning Permit
Ch. 450, Administrative Regulations for Hydropower Projects
Ch. 500, Stormwater Management
Ch. 502, Direct Watersheds of Lakes Most at Risk from New Development, and Urban Impaired Streams
Ch. 514, Use of Aquatic Pesticides
Ch. 517, Certification of Persons Servicing and Repairing Sanitary Waste Treatment Facility
Ch. 519, Interim Effluent Limitations and Controls for the Discharge of Mercury
Ch. 520, Definitions for the Waste Discharge Permitting Program
Ch. 521, Applications for Waste Discharge Licenses
Ch. 522, Application Processing Procedures for Waste Discharge Licenses
Ch. 523, Waste Discharge License Conditions
Ch. 524, Criteria and Standards for Waste Discharge Licenses
Ch. 525, Effluent Guidelines and Standards
Ch. 528, Pretreatment Program
Ch. 529, General Permits for Certain Wastewater Discharges
Ch. 530, Surface Waters Toxics Control Program
Ch. 531, Regulations for Wastewater Operator Certification
Ch. 532, Large Commercial Passenger Vessels
Ch. 543, Rules to Control the Subsurface Discharge of Pollutants
Ch. 550, Discontinuance of Wastewater Treatment Lagoons
Ch. 555, Standards for the Addition of Transported Wastes to Wastewater Treatment Facilities
Ch. 570, Combined Sewer Overflow Abatement
Ch. 573, Snow Dumps: Exemption from Waste Discharge License
Ch. 574, Siting and Operation of Road Salt and Sand-Salt Storage Areas
Ch. 579, Classification Attainment Evaluation Using Biological Criteria for Rivers and Streams
Ch. 580, Regulations Relating to Sampling Procedures and Analytic Procedures
Ch. 581, Regulations Relating to Water Quality Evaluations
Ch. 582, Regulations Relating to Temperature
Ch. 584, Surface Water Quality Criteria for Toxic Pollutants
Ch. 585, Identification of Fish Spawning Areas and Designation Salmonid Spawning Areas
Ch. 586, Rules Pertaining to Discharges to Class A Waters
Ch. 587, In-stream Flows and Lake and Pond Water Levels
Ch. 592, The Small Community Wastewater Program
Ch. 594, State Contribution to Overboard Discharge Replacement
Ch. 595, State Revolving Loan Fund
Ch. 596, Overboard Discharges: Licensing and Abandonment