CHA News Article

CDPH Issues Guidance on Reducing Legionella Risk in Water Systems

The California Department of Public Health (CDPH) has issued the attached All Facilities Letter 18-39, which addresses Legionella risks in health care facility water systems. Hospitals, critical access hospitals and skilled-nursing facilities must develop and adhere to policies and procedures that inhibit microbial growth in building water systems, in order to reduce the growth and spread of Legionella and other pathogens in water. CDPH directs facilities to guidance issued by the Centers for Medicare & Medicaid Services, which clarifies expectations and notes that facilities must:

  • Conduct a facility risk assessment to identify where Legionella and other pathogens could grow and spread.
  • Develop and implement a water management program.
  • Specify testing protocols and document testing results.
  • Comply with other federal, state and local requirements.

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