Denver area dental practices served by the Metro Wastewater Reclamation District (Metro District) must install amalgam separators by Aug. 19, 2015, to comply with new amalgam control requirements. (Click here to see the cities and sanitation districts affected.) Once an amalgam separator has been installed in your dental office, you will need to submit a certification form to let the Metro District know these requirements have been met. Best management practices (BMPs) for placement, removal and disposal of dental amalgam should have been implemented and reported to the Metro District via a certification form by Feb. 19, 2015. Exemptions from these requirements are available for dental offices that never place or remove amalgam or teeth containing amalgam.