Arenholt-Bindslev D, Larsen AH. Mercury levels and discharge in waste water from dental clinics. Water, Air, and Soil Pollution. 1996 Jan 1;86(1-4):93-9.
It was concluded that Hg is released with the waste water from dental clinics. Several hundred grams of Hg clinic−1 may be discharged annually with the waste water. Installation of efficient amalgam separators may reduce the Hg outlet markedly.