All Roll Calls
Yes: 190 • No: 0
WashingtonSB 62912025-2026 Regular SessionSenateWALLET
Concerning on-site wastewater treatment system inspections.
Sponsored By: Liz Lovelett (Democratic)
Became Law
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Bill Overview
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
Stronger rules for septic system inspectors
Beginning June 11, 2026, local health boards must use qualified people to inspect or review septic systems. A Washington State engineering competency certificate counts as proof for the engineering parts of the work. Boards can let new, noncertified staff do inspections and design reviews if a certified person supervises them. That supervised work is allowed for up to two years from hire, and may continue under supervision for a total of up to four years. These steps raise inspection quality and protect homes with septic systems.
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Sponsors & Cosponsors
Sponsor
Liz Lovelett
Democratic • Senate
Cosponsors
Sharon Shewmake
Democratic • Senate
Roll Call Votes
Senate vote • 3/10/2026
Final Passage as Amended by the House
Yes: 49 • No: 0
House vote • 3/3/2026
Final Passage as Amended by the House
Yes: 93 • No: 0 • Other: 5
Senate vote • 2/10/2026
3rd Reading & Final Passage
Yes: 48 • No: 0 • Other: 1
Actions Timeline
Effective date 6/11/2026.
3/24/2026SenateChapter 210, 2026 Laws.
3/24/2026SenateGovernor signed.
3/24/2026legislatureDelivered to Governor.
3/12/2026legislatureSpeaker signed.
3/11/2026legislaturePresident signed.
3/11/2026legislaturePassed final passage; yeas, 49; nays, 0; absent, 0; excused, 0.
3/10/2026SenateSenate concurred in House amendments.
3/10/2026HouseThird reading, passed; yeas, 93; nays, 0; absent, 0; excused, 5.
3/3/2026SenateRules suspended. Placed on Third Reading.
3/3/2026SenateCommittee amendment(s) adopted with no other amendments.
3/3/2026SenateRules Committee relieved of further consideration. Placed on second reading.
3/2/2026SenateReferred to Rules 2 Review.
2/25/2026SenateENVI - Executive action taken by committee.
2/24/2026SenateENVI - Majority; do pass with amendment(s).
2/24/2026SenateFirst reading, referred to Environment & Energy.
2/12/2026SenateThird reading, passed; yeas, 48; nays, 0; absent, 0; excused, 1.
2/10/2026SenateRules suspended. Placed on Third Reading.
2/10/2026SenatePlaced on second reading consent calendar.
2/6/2026SenatePassed to Rules Committee for second reading.
2/3/2026SenateLGV - Majority; do pass.
2/2/2026SenateFirst reading, referred to Local Government.
1/22/2026SenateIntroduced
1/22/2026Senate
Bill Text
Session Law
3/31/2026
Bill as Passed Legislature
3/13/2026
Original Bill
1/23/2026
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