MassDEP Dental Amalgam/Mercury Recycling Program

This program helps reduce the amount of mercury that Massachusetts dental practices and facilities release into the environment.

Table of Contents

News & Updates

October 2021

MassDEP finalized amendments to 310 CMR 73.00. The revisions exempt dental facilities that certify annually or biennially to local publicly owned treatment works (POTWs) with EPA-approved pretreatment programs from duplicative MassDEP amalgam separator equipment certification requirements and fees.

June 2021

All Massachusetts dental facilities and practices regulated under 310 CMR 73.00 are again subject to all normal program compliance requirements and deadlines. MassDEP enforcement discretion guidance on filing dental amalgam separator certifications during the COVID-19 pandemic no longer applies.

About the Dental Program

Dental practices and clinics release a significant amount of mercury into the environment when they dispose of waste from amalgam fillings in the trash or down the drain.

The Department of Environmental Protection (MassDEP) in 2005 implemented a voluntary program in cooperation with the Massachusetts Dental Society (MDS) to encourage early installation and use of amalgam separators by dentists.

In 2006, with input from MDS, individual dentists and other stakeholders, the agency issued regulations requiring most dental practices and facilities in Massachusetts to:

  • Install and operate amalgam separator systems,
  • Recycle mercury-containing amalgam wastes, and
  • Periodically certify their compliance with these requirements.

Follow the links in Additional Resources below to learn more about University of Massachusetts research that confirmed amalgam separator technologies are effective at removing most mercury from dental wastewater.

Additional Resources   for About the Dental Program

Specific Program Requirements

MassDEP requires Massachusetts dental practices or facilities that place or remove mercury amalgam fillings to:

  • Install amalgam separator systems that remove at least 98 percent of amalgam waste containing mercury (using the ISO 11143 protocol or an equivalent method) and serve all dental chairs where amalgam waste is generated.
  • Maintain and operate amalgam separator systems according to manufacturer specifications.
  • Use only biodegradable disinfectants and non-corrosive, non-oxidizing cleaners in vacuum system lines and drains connected to amalgam separators.
  • Recycle all mercury-containing amalgam wastes they generate.
  • Inform staff about the procedures for handling waste amalgam and ensure that at least one employee is familiar with separator system operation and maintenance.
  • Keep records of separator system maintenance and service, as well as amalgam waste shipments, to document compliance with program requirements.
  • Submit a compliance certification form to MassDEP within 60 days of initial separator system installation and by March 31 of every even-numbered year thereafter.

See the regulations and best practices in Additional Resources below for more specific information.

Additional Resources   for Specific Program Requirements

Amalgam Separator System Suppliers

This list of companies that manufacture or market amalgam separator systems is provided for your reference only. Inclusion on this list does not constitute MassDEP approval of these systems, nor does it guarantee that they will remove at least 98 percent of amalgam waste containing mercury from wastewater, as required by 310 CMR 73.00.

Air Techniques
1295 Walt Whitman Road
Melville, NY 11747

Rebec Environmental
P.O. Box 658
Edmonds, WA 98026

American Dental Accessories, Inc.
7310 Oxford Street
Minneapolis, MN 55426

R&D Services Inc.
Dr. Ross Fraker DDS
8116 Greenlake Drive N.
Seattle, WA 98103

Medentex LLC
181 East Halsey Road
Parsippany, NJ 07054

4 Mount Royal Avenue, Suite 4-250
Marlborough, MA 01752

METASYS Group (USA Agent)
Pure Water Development LLC
5001 S.W. 74th Court, Suit 206
Miami, FL 33155


Updated October 2021

Amalgam Mercury Recycling & Recyclers

To safely recycle dental amalgam waste that contains mercury:

  • Accumulate and store it in an air-tight container with a secure lid until you have collected enough for shipment to a reclamation facility or recycler.
  • Send it directly to a recycling facility that has obtained the proper environmental approvals in the state where it is located. MassDEP can confirm the compliance status of Massachusetts facilities.
  • You may use a common carrier (e.g., U.S. Postal Service, UPS, FedEx, or other shipping company) to transport amalgam waste.

The following companies accept dental amalgam waste for recycling.

Bethlehem Apparatus Co.
890 Front Street
P.O. Box Y
Hellertown, PA 18055
Medentex LLC
181 East Halsey Road
Parsippany, NJ 07054
Dental Eco Service (USA Agent)
Metasys/Purewater Development
2530 Kirby Circle Unit 301302 
Palm Bay, FL 32905 
WM Mercury Waste Inc.
21211 Durand Avenue
Union Grove, WI 53182

Updated October 2020

Who Needs to Certify & When

Certifications must be submitted to MassDEP within 60 days of separator system installation and by March 31 of every even-numbered year thereafter.

The MassDEP Dental Amalgam/Mercury Recycling program applies to dental practices or facilities that place or remove mercury amalgam fillings. Typically, these are general dentistry and endodontics offices. 

Offices that perform oral or maxillofacial surgery, orthodontics, or periodontics are generally not subject to these regulations unless they also place or remove mercury amalgam fillings.

Additional Resources   for Who Needs to Certify & When

How to File Your Certification

This MassDEP compliance certification program changed on February 1, 2020. Please follow the instructions below:

  1. Review the Dental Certification Form Instructions in Additional Resources below.
  2. Login to eDEP Online Filing. Note: If you are a new eDEP user, you will need to create an account first.
  3. After login, click Forms, then Business Sectors, then the Start Transaction button corresponding to the Dental Amalgam/Mercury Recycling Certification.
  4. Section A of the form:

    a. Only select 'Yes' on Question 8 if your facility discharges wastewater to one of the following POTWs: Chicopee Water Pollution Control, MWRA (Massachusetts Water Resources Authority), Town of Webster Sewer Department, Upper Blackstone Water Pollution Abatement District, Westborough Wastewater Treatment Plant. Next, you shall select the appropriate POTW from the dropdown list for Question 9 and you will skip all questions in Sections B through H. Please note: If you discharge wastewater to one of the listed POTWs, you do not pay the fee to MassDEP.

    b. If you do not discharge to one of the POTWs listed above, select 'No' on Question 8 and skip question 9. You will then be required to complete the entire MassDEP dental amalgam certification form and pay the $200 fee by credit card.
  5. Complete all required questions, consistent with Step 4 above.
  6. Pay the $200 fee by credit card, if applicable.
  7. Click the orange Submit button to complete your certification. 

Important: You have not finished the certification if you have not clicked the orange Submit button.​

Key Actions   for How to File Your Certification

Additional Resources   for How to File Your Certification

Notify MassDEP of a Change in Ownership

Complete and submit this form to MassDEP within 60 days of taking ownership of a dental facility.

You may fill out and save the Microsoft Word form on your computer. The PDF version has to be printed out and completed by hand.

Additional Resources   for Notify MassDEP of a Change in Ownership

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