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Water Resources Regulations and Standards

These regulations govern protection of the state's water resources.
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Drinking Water

236 CMR 2.00: General Provisions - Operators of Drinking Water Supply Facilities 
236 CMR 3.00: Classification of Public Water Systems and Public Water Systems Operators 
236 CMR 4.00: Certification of Operators of Public Water Supply Systems 
236 CMR 5.00: Disciplinary Action 
310 CMR 21.00: Federal Safe Drinking Water Assessment 
310 CMR 22.00: The Massachusetts Drinking Water Regulations 
310 CMR 27.00: Underground Injection Control 
310 CMR 46.00: Certification of Well Drillers and Filing of Well Completion Reports 
Standards & Guidelines for Contaminants in Massachusetts Drinking Water 

Groundwater

314 CMR 5.00: Ground Water Discharge Permit Program 

Industrial Wastewater

Fact Sheet: Revised Sewer Regulations and Operation & Maintenance Regulations (English, PDF 29.12 KB)
310 CMR 71.00: Industrial Wastewater Regulations for Photo Processors and Printers 
310 CMR 72.00: Industrial Wastewater Standard for Dry Cleaners 
314 CMR 7.00: Sewer System Extension and Connection Permit Program 
314 CMR 18.00: Industrial Wastewater Holding Tank and Container Construction, Operation, and Record-keeping Requirements 

Laboratory Certification Regulations

310 CMR 42.00: Certification and Operation of Environmental Analysis Laboratories 

State Revolving Funds

310 CMR 44.00: The Clean Water State Revolving Fund 
310 CMR 45.00: The Drinking Water State Revolving Fund 

Title 5/Septic Systems

310 CMR 11.00: General Application and Administration of Environmental Code 
310 CMR 15.00: The State Environmental Code Regulating Septic Systems ("Title 5") 
Title 5 Changes Effective January 3, 2014 (English, PDF 18.76 KB)

Wastewater & Sewers

Fact Sheet: Revised Sewer Regulations and Operation & Maintenance Regulations (English, PDF 29.12 KB)
310 CMR 32.00: Land Application of Sludge and Septage 
314 CMR 3.00: Surface Water Discharge Permit Program 
314 CMR 7.00: Sewer System Extension and Connection Permit Program 
314 CMR 8.00: Supplemental Requirements for Hazardous Waste Management Facilities 
314 CMR 12.00: Operation, Maintenance and Pretreatment Standards for Wastewater Treatment Works and Indirect Dischargers 
314 CMR 18.00: Industrial Wastewater Holding Tank and Container Construction, Operation, and Record-keeping Requirements 
257 CMR 2.00: Certification of Operators of Wastewater Treatment Facilities 

Wastewater: Reclaimed Water

314 CMR 20.00: Reclaimed Water Permit Program and Standards 

Water Management

310 CMR 36.00: Massachusetts Water Resources Management Program 

Water Quality

314 CMR 2.00: Permit Procedures for Wastewater Discharge, Sewer Permits, and Reclaimed Water 
314 CMR 4.00: The Massachusetts Surface Water Quality Standards 
314 CMR 9.00: 401 Water Quality Certification 
Summary of 2008 Stormwater Revisions (English, PDF 16.63 KB)
2008 Stormwater Revisions to 314 CMR 9.00 (English, PDF 31.21 KB)
310 CMR 30.000: Massachusetts Hazardous Waste Regulations 

Waterways

310 CMR 9.00: The Massachusetts Waterways Regulation 

Wetlands

MassDEP Wetlands Regulations 

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