Dental Rule

Dental Amalgam

Amalgam contains mercury.  Mercury is a potent neurotoxin that bioaccumulates in fish and shellfish and ultimately affects human health and the environment.

New Federal Rule

The United States Environmental Protection Agency (USEPA) has set a national standard that will reduce the discharge of mercury containing dental amalgam from dental practices to sewer plants.  The standard includes mandatory use of amalgam separators or similar devices, and Best Management Practices (BMP's) endorsed by the American Dental Association (ADA).  Compliance with this rule is phased in over 3 years.

Dental Practice Responsibilities

Depending on your specific practice, different requirements and deadlines must be achieved.  

See what requirements pertain to your dental practice.

One-Time Compliance Report

Instructions on completing the One-Time Compliance Report

One-Time Compliance Report

Additional Resources

Original Federal Register notice for 40 CFR Part 441

Additional guidelines and a short fact sheet


Should you have questions, please contact Jack Boccuzzi, Pretreatment Specialist, at 301-600-2511 or JBoccuzzi@FrederickCountyMD.gov.