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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

Open PDF file, 103.79 KB,  Fact Sheet: Revised Sewer Regulations and Operation & Maintenance Regulations (English, PDF 103.79 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") 
Open PDF file, 18.76 KB,  Title 5 Changes Effective January 3, 2014 (English, PDF 18.76 KB)

Wastewater & Sewers

Open PDF file, 103.79 KB,  Fact Sheet: Revised Sewer Regulations and Operation & Maintenance Regulations (English, PDF 103.79 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 
Open PDF file, 16.63 KB,  Summary of 2008 Stormwater Revisions (English, PDF 16.63 KB)
Open PDF file, 31.21 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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