Families - Families of persons with mental retardation and developmental disabilities. People - Persons with mental retardation and developmental disabilities served by The Arc of Washington County. Board Members - Board of Directors, The Arc of Washington County. Providers - Provider agencies are organizations serving the life support needs of persons with mental retardation and developmental disabilities. We provide independent support coordination services to persons they serve. We also provide support coordination services to staff of provider organizations. DMRS - The Division of Mental Retardation Services (DMRS) is the state agency responsible for coordinating statewide services and supports to persons with mental retardation. DMRS is the agency responsible for insuring that the outcomes of the settlement agreements are achieved.