A water system survey (formerly referred to as a sanitary survey) is an on-site review of a water system's sources, treatment, storage facilities, distribution system, operation and maintenance procedures, monitoring, and management, for the purpose of evaluating the system's capability of providing safe water to the public.
Water System Surveys and Inspections
Oregon Drinking Water Services has identified criteria for determining whether a community public water system should be considered to have outstanding performance. This designation is given at the completion of a water system survey. Systems that are designated outstanding performers will have their water system survey frequency reduced from every 3 years to every 5 years.