Determine whether a venue requires secondary disinfection (UV/ozone) under current MAHC guidance

Steps

1. Identify the venue type: MAHC guidance requires secondary disinfection for facilities designed for children under age five, therapy pools, and interactive water play features (e.g., splash pads), reflecting their higher risk profile for fecal/Crypto contamination.
2. Confirm which MAHC edition and any state/local amendments actually apply to this facility, since 'increased risk' venue definitions and secondary disinfection requirements can shift between editions.
3. If secondary disinfection is required, verify the system (UV or ozone) is sized and validated to achieve the log-reduction/turnover performance specified for that venue type (e.g., interactive water features commonly require a defined turnover time such as 30 minutes with UV/ozone treatment).
4. Check for documentation of installation validation/commissioning from the manufacturer or installer, not just that a UV or ozone unit is physically present.
5. Reconfirm requirements with the adopting state/local health authority before advising a client, since MAHC itself is a model code, not self-enforcing law.