Montana Statewide Rule

Montana Public Swimming Pool Sanitation Rules Statewide

Heavy RestrictionsApplies statewide across Montana (2026)

Montana regulates public swimming pools, spas, and bathing places under state health rules requiring licensing, water quality testing, and lifeguard standards regardless of local jurisdiction.

Key Facts

Statute: MCA Title 50 Chapter 53
Chlorine Range: 1.0 to 5.0 ppm
pH Range: 7.2 to 7.8
License Frequency: Annual renewal

Source: Montana Legislature

Full Breakdown

MCA Title 50, Chapter 53 governs public bathing places, requiring annual licensure through the Department of Public Health and Human Services or delegated local health departments. ARM 37.115 sets pool water quality standards including chlorine residuals (1.0 to 5.0 ppm), pH (7.2 to 7.8), and turbidity limits. Operators must submit construction plans for review, post safety signage, and maintain daily testing logs. Public pools include those at hotels, apartments, and clubs but generally not single-family residences. The state sanitation framework applies uniformly across Montana.

Violations & Penalties

Operating without a license or failing inspections may result in closure, fines up to $500 per day, and potential criminal misdemeanor charges under MCA 50-53-107.

Frequently Asked Questions

Does Montana require lifeguards at public pools?

State rules require either lifeguards meeting certified training standards or compliant warning signs and rescue equipment, depending on the pool type and bather load classification.

Are residential pools regulated under Montana state rules?

No. MCA Title 50 Chapter 53 covers public bathing places. Single-family residential pools follow state building code barriers but not the public pool sanitation regime.

Sources

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