Model Aquatic Health Code (MAHC)

The Model Aquatic Health Code (MAHC) is the nation's only all-inclusive model pool code. It is based on scientific data and best practices gathered by public health and aquatics industry experts, making it more expedient for jurisdictions to justify, adopt, and implement. Unlike legislation, the MAHC is voluntarily adopted, wholly or in part, and driven by expertise. It is free, accessible to all, and backed by the Centers for Disease Control and Prevention (CDC) and other organizations.

2018 Update

On July 18, 2018, CDC released the 2018 MAHC, which implements changes approved during the 2017 Vote on the Code and submitted to CDC by the Council for the Model Aquatic Health Code (CMAHC). These updates cover emerging public health topics, such as Legionella decontamination and the design and operation of floatation tanks, as well as ongoing challenges like natatorium noise reduction. What do the 2018 changes mean for you? Rebecca Robledo gives an overview of the recent changes here.


Read NSPF's MAHC endorsement press release here.

Read the statements of endorsement for the 2018 MAHC here:

Commercial Energy Specialists
Council of State & Territorial Epidemiologists (CSTE)
National Association of County & City Health Officials (NACCHO)
National Environmental Health Association (NEHA)
National Swimming Pool Foundation (NSPF)


The CMAHC, a nonprofit organization, was created to support and improve the MAHC by gathering input and advice from industry stakeholders. Moving forward, the CMAHC will be working with CDC to update the MAHC every three years. Stay tuned for more information on CMAHC's activities between now and the next Vote on the Code conference in 2020.

Our Facility Manager™ app received the first ever certification by CMAHC as a product that meets the organization's strict standards for ensuring health and safety at public aquatic venues. Read the press release here.

Get Involved

The CMAHC is looking for members and sponsors to help continue to move the MAHC forward and support adoption. Volunteers are also needed to fill vital roles in the proposed submission review and discussion process. To participate in future CMAHC conferences please visit or email Susan Wichmann. Join or renew your membership to the CMAHC so you can vote on requested MAHC changes to recommend to CDC for final decision. Learn more: Read about the MAHC and view a MAHC Infographic!