Single family residential customers billed directly by RVSS may contact the RVSS office at 541-664-6300 to set up quarterly or annual billing. Quarterly billing nets a 3 percent savings and requires the customer to pay two months in advance, and annual billing saves the customer 5 percent and requires the customer to pay 11 months in advance. Follow this link for a breakdown of the residential rates billed by RVSS.