Provides manufacturers of biological remediation technologies for use in the recovery of failed drainfields of on-site sewage disposal systems must provide documentation of verified product performance as required in this act to the local health jurisdiction where the product will be installed.

Allows biological remediation technology to be used in on-site sewage disposal systems not in a state of failure for the purpose of preventing clogged infiltrative surfaces.

Requires the state board of health to adopt rules by July 1, 2010, for verification of biological remediation products performance and use of products with verified performance for use in failing on-site sewage disposal systems.

Requires the state board of health to report to the appropriate committees of the legislature by July 1, 2009, on the progress of rule making, as well as the successes and failures of biological remediation technology.

Allows a local health jurisdiction to issue a no fee permit for use of biological remediation products in failing on-site sewage disposal systems.

Provides only on-site wastewater treatment system designers licensed under chapter 18.210 RCW, installers approved by the local health officer to install on-site sewage disposal systems or components, or professional engineers licensed under chapter 18.43 RCW are permitted to install biological remediation products for use in failing on-site sewage disposal systems.