Washington Facsimile Affidavit Declaration is an official document filed with the Washington State Department of Health that allows a person to legally declare certain information true and correct without having to appear in court. The affidavit is typically used to verify facts related to marriage, divorce, death, adoption, guardianship, and other legal matters. There are two types of Washington Facsimile Affidavit Declaration: a Declaration of Marriage and a Declaration of Divorce. The Declaration of Marriage is used when two people wish to declare their marriage valid before a notary or other authorized official. The Declaration of Divorce is used when a couple wishes to legally end their marriage. Both documents must be signed by both parties and notarized.