Authorizes the local board of health in the twelve counties bordering Puget Sound to: (1) Collect an annual charge or a rate for each on-site sewage system located in the basin of Puget Sound for the purpose of implementing the on-site sewage program management plan; and

(2) Collect the charge or rate in areas of the county located outside the Puget Sound basin.

Authorizes counties and the department of health, in order to assist homeowners with the repair and replacement of on-site sewage systems, to consult with the department of ecology to capitalize and administer a sustainable unified low-interest loan program through the department of ecology's established water quality financial assistance program.

Provides that a person exempt from paying property taxes is also exempt from the on-site sewage program charge.