WA People
BILL · 2025–26 SESSION

SB 6291: On-site wastewater systems

Concerning on-site wastewater treatment system inspections.

Summary

  • Extends the maximum period that a noncertified individual may review designs and conduct inspections of on-site wastewater treatment systems under the supervision of a certified individual from two years to four years.

From the Senate Bill Report (SB 6291), written by the Legislature's nonpartisan staff. Read the full report ↗

Enacted Enacted · Chapter 210, Laws of 2026
  1. IntroducedJan 22, 2026
  2. Out of committeeFeb 3, 2026
  3. Passed SenateFeb 10, 2026
  4. Passed HouseMar 3, 2026
  5. GovernorMar 24, 2026
  6. LawMar 24, 2026
Prime sponsor
Liz Lovelett (D-40)
Introduced
January 22, 2026 in the Senate
Last action
March 24, 2026
Session law
Chapter 210, Laws of 2026

AN ACT Relating to on-site wastewater treatment system inspections;

Sponsors

Prime sponsor: Liz Lovelett (D-40)

1 co-sponsor (1 Democrat, 0 Republicans)

Sharon Shewmake D-42

Votes

Senate · 3rd Reading & Final Passage

Passed February 10, 2026
Version voted on: SB 6291
48 Yea 0 Nay 0 Absent 1 Excused
PartyYeaNayAbsentExcused
Democrat30000
Republican18001
How each member voted

Yea (48)

Excused (1)

Permalink to this vote

House · Final Passage as Amended by the House

Passed March 3, 2026
Version voted on: SB 6291
93 Yea 0 Nay 0 Absent 5 Excused
PartyYeaNayAbsentExcused
Democrat56003
Republican37002
How each member voted

Yea (93)

Permalink to this vote

Senate · Final Passage as Amended by the House

Passed March 10, 2026
Version voted on: SB 6291
49 Yea 0 Nay 0 Absent 0 Excused
PartyYeaNayAbsentExcused
Democrat30000
Republican19000
How each member voted

Yea (49)

Permalink to this vote

History

  1. Effective date 6/11/2026.
  2. Chapter 210, 2026 Laws.
  3. Governor signed.
  4. Delivered to Governor.
  5. Speaker signed.
  6. President signed.
  7. Passed final passage; yeas, 49; nays, 0; absent, 0; excused, 0.
  8. Senate concurred in House amendments.
  9. Third reading, passed; yeas, 93; nays, 0; absent, 0; excused, 5.
  10. Rules suspended. Placed on Third Reading.
  11. Committee amendment(s) adopted with no other amendments.
  12. Rules Committee relieved of further consideration. Placed on second reading.
  13. Referred to Rules 2 Review.
  14. ENVI - Executive action taken by committee.
  15. ENVI - Majority; do pass with amendment(s).
  16. First reading, referred to Environment & Energy.
  17. Third reading, passed; yeas, 48; nays, 0; absent, 0; excused, 1.
  18. Rules suspended. Placed on Third Reading.
  19. Placed on second reading consent calendar.
  20. Passed to Rules Committee for second reading.
  21. LGV - Majority; do pass.
  22. First reading, referred to Local Government.

SB 6291 in other sessions

Bill numbers restart every two years, so the same number is a different bill in each session.

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