"NEW SECTION.  Sec. 1   A new section is added to chapter 90.88 RCW to read as follows:
     (1) In aquatic rehabilitation zone one, any new or retrofitted on-site sewage disposal systems installed after July 1, 2009, may not discharge to ground or surface waters more than twenty milligrams per liter of total nitrogen. In aquatic rehabilitation zone one, any new or retrofitted wastewater treatment system installed after July 1, 2009, must use all known, available, and reasonable methods of nitrogen removal.
     (2) By December 1, 2008, the department of health and the department of ecology shall jointly report to the legislature regarding the impact of removing phosphates from the discharge of on-site sewage disposal systems and wastewater treatment systems in aquatic rehabilitation zone one.

NEW SECTION.  Sec. 2   A new section is added to chapter 70.118 RCW to read as follows:
     In aquatic rehabilitation zone one as designated in RCW 90.88.010, any new or retrofitted on-site sewage disposal system installed after July 1, 2009, may not discharge to ground or surface waters more than twenty milligrams per liter of total nitrogen.

NEW SECTION.  Sec. 3   A new section is added to chapter 70.118A RCW to read as follows:
     In aquatic rehabilitation zone one as designated in RCW 90.88.010, any new or retrofitted on-site sewage disposal system installed after July 1, 2009, may not discharge to ground or surface waters more than twenty milligrams per liter of total nitrogen.

Sec. 4   RCW 70.118B.040 and 2007 c 343 s 5 are each amended to read as follows:
     (1) For the protection of human health and the environment, the secretary shall adopt rules for the comprehensive regulation of large on-site sewage systems, which includes, but is not limited to, the siting, design, construction, installation, maintenance, repair, and permitting of the systems.
     (2) In adopting the rules, the secretary shall, in consultation with the department of ecology, require that large on-site sewage systems comply with the applicable sections of chapter 90.48 RCW regarding control and prevention of pollution of waters of the state, including but not limited to:
     (a) Surface and groundwater standards established under RCW 90.48.035; and
     (b) Those provisions requiring all known, available, and reasonable methods of treatment.
     (3) In aquatic rehabilitation zone one as designated in RCW 90.88.010, any new or retrofitted large on-site sewage disposal system installed after July 1, 2009, may not discharge to ground or surface waters more than twenty milligrams per liter of total nitrogen.
     (4) In adopting the rules, the secretary shall ensure that requirements for large on-site sewage systems are consistent with the requirements of any comprehensive plans or development regulations adopted under chapter 36.70A RCW or any other applicable comprehensive plan, land use plan, or development regulation adopted by a city, town, or county.

NEW SECTION.  Sec. 5   A new section is added to chapter 90.48 RCW to read as follows:
     In aquatic rehabilitation zone one as designated in RCW 90.88.010, any new or retrofitted wastewater treatment system installed after July 1, 2009, must use all known, available, and reasonable methods of nitrogen removal.

NEW SECTION.  Sec. 6   A new section is added to chapter 70.118 RCW to read as follows:
     Within five years of the effective date of this section, the department and the department of ecology shall jointly report to the appropriate legislative committees regarding the requirements for on-site sewage disposal systems in sections 1 through 3 of this act and RCW 70.118B.040 including, but not limited to:
     (1) The effectiveness of the requirements in addressing low-dissolved oxygen in aquatic rehabilitation zone one, established in RCW 90.88.010;
     (2) A review of the cost impacts in meeting the new requirements; and
     (3) Any recommendations for modifications to the standards.
     The department and the department of ecology shall consult with interested parties when developing this report.

NEW SECTION.  Sec. 7   If specific funding for the purposes of this act, referencing this act by bill or chapter number, is not provided by June 30, 2008, in the omnibus appropriations act, this act is null and void."