WA SB5597

Modernizes definitions in Washington's water recreation facility law by establishing "aquatic facility" and "aquatic venue" as new terms covering swimming pools, spas, water slides, wave pools, float tanks, cold plunges, and other water recreation structures

Requires the State Board of Health to review and consider the CDC's Model Aquatic Health Code when adopting rules for water recreation facilities

Increases minimum liability insurance for aquatic facilities from $100,000 to $1,000,000 for bodily injury or death claims

Exempts residential aquatic facilities (single-family homes offering rentals) and small residential communities with fewer than 15 living units from preconstruction design review, routine inspection, permit, and fee requirements

Establishes 30-day timelines for department or local health jurisdiction responses to plan review applications and construction permit issuance after plan approval