ORS 450.830: Authority may construct and operate sewage disposal and drainage systems; operation beyond authority boundaries.

The sanitary authority may construct, maintain or operate sewage disposal and drainage systems, including sewage treatment plants, trunk and lateral sewers and drains, or any combination thereof, for any area within the authority. Portions of such systems may be constructed outside the authority where necessary or expedient. The authority may furnish sewage disposal service to areas outside the authority on a contract basis.