These regulations apply to all Massachusetts dental practices and facilities that generate or discharge wastewater from mercury amalgam-related processes.

310 CMR 73.00: Amalgam Wastewater & Recycling  pdf format of 310 CMR 73.00: Amalgam Wastewater  & Recycling

These regulations were last amended in September 2016.

Dental Program Contacts

eDEP Online Filing:

baw.edep@state.ma.us or
617-292-5647 

Amalgam Recycling & Wastewater:

dental.mercury@state.ma.us or
617-292-5647

310 CMR 73.00: Proposed Amendments & Public Comment

  • There are no proposed regulations out for public comment at this time.

Dental Amalgam/Mercury Recycling Program

Massachusetts dental practices and clinics that place or remove amalgam fittings are required to certify annually that they have, operate and maintain amalgam separator systems to remove mercury from their wastewater discharges.

Notice: Change in Certification Date for 2017 Filers

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Massachusetts dental facilities with 2017 deadlines for submitting certifications should NOT file in 2017. These dental facilities should file certifications with MassDEP between January 1, 2018, and the March 31, 2018, deadline. This change will enable all dental facilities to move toward the new two-year certification cycle, with certifications being due on March 31 of every even-numbered year.

About the Dental Program

The program was intended to reduce the amount of mercury released into the environment by Massachusetts dental practices and facilities.

How to Comply

The Dental Amalgam/Mercury Recycling program applies to dental practices or facilities that place or remove mercury amalgam fillings.

Dental Certification Forms, Instructions & Filing Schedule

How and when dental facilities must submit their dental amalgam/mercury recycling compliance certifications.

eDEP Online Filing

A secure site for submitting environmental permits, transmittals, certifications, and reports electronically to MassDEP.

Amalgam Separators

These devices remove particles of mercury amalgam from wastewater before it is discharged to sewers.

Amalgam Mercury Recyclers

All amalgam waste generated at dental practices and facilities must be sent to recyclers that reclaim mercury from the amalgam waste material.

Recommended Best Practices for Handling Amalgam & Mercury Wastes  pdf format of Recommended Best Practices
doc format of                             Recommended Practices: Handling Amalgam & Mercury Waste

Guidelines developed by the Massachusetts Water Resources Authority with assistance from the Massachusetts Dental Society and support from MassDEP.