The Washington Association for the Treatment of Sexual Abusers (WATSA) is a state chapter of the Association for the Treatment of Sexual Abusers (ATSA). Incorporated in 1984, ATSA is a non-profit, interdisciplinary organization. ATSA was founded to foster research, facilitate information exchange, further professional education and provide for the advancement of professional standards and practices in the field of sex offender evaluation and treatment.

ATSA is an international organization focused specifically on the prevention of sexual abuse through effective management of sex offenders.

• Elimination of sexual victimization.
• The protection of our communities through responsible and ethical treatment of sex offenders.
• The prevention of sexual assault through effective management of sex offenders.
• The maintenance of high standards of professionalism and integrity within its membership.