Amalgam Separators for the Dental Industry

The New York State Department of Environmental Conservation (DEC) requires all dental facility wastewater likely to come into contact with amalgam waste to be treated prior to discharge by an amalgam separator (view 6 NYC RR 374-4). In addition, the U.S. Environmental Protection Agency (EPA) has recently adopted new regulations regarding the requirements for amalgam separators, the treatment of amalgam waste and best management practices (view the EPA Dental Affluent Guidelines, 40 CFR Part 441).

To comply with these regulations, dental facilities located in New York City must notify us when they install their amalgam separator using the Compliance Report for Dental Office Amalgam Separator Installation Form. Dental practices that submitted an amalgam separator form prior to June 2018 are also required to submit the form as it specifies new compliance requirements.

Filing Instructions

Download the Compliance Report for Dental Office Amalgam Separator Installation Form

Fill in the form and send it to us by post, fax, or email:

New York City Department of Environmental Protection
Attn: Industrial Inspections and Permitting
Bureau of Wastewater Treatment
96-05 Horace Harding Expressway, 1st Floor
Corona, NY 11368-5107

Fax: (718) 595-4771


Please use one method to send the form. You should save and print a copy for your records and you must keep a copy of the completed form at your dental facility. Failure to install acceptable separators or provide the required notification by the applicable due dates will result in noncompliance and possible enforcement action.

If you have any questions, email For more regulation information, visit DEC’s Managing Dental Mercury webpage.