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Model Aquatic Health Code Guidance

Cover image of the Model Aquatic Health Code

The 2018 Model Aquatic Health Code (MAHC) (3rd Edition) launched July 18, 2018.

Visit the MAHC website to access

  • the MAHC code;
  • annex with scientific explanations;
  • Code comparison tool;
  • materials including MAHC factsheet, infographic, and web button; and
  • information about how you can get involved.

How Can States and Localities Use the MAHC?

The MAHC is a free, science-based resource. Government agencies and the aquatics sector can use the MAHC to reduce risk for outbreaks, drowning, and pool-chemical injuries at

  • Public swimming pools
  • Pools, hot tubs, and spas in hotels, apartment complexes, and neighborhoods
  • Waterparks
  • Other aquatic facilities

The MAHC guidelines address the design, construction, operation, maintenance, policies, and management of public aquatic facilities. States and localities can use it to create or update existing pool codes to reduce risk for drowning, waterborne illness outbreaks, and injuries from pool chemicals.

How Was the MAHC Developed?

The MAHC was developed through a collaborative effort involving academia, public health, and industry. The input from the Centers for Disease Control and Prevention has drawn from expertise in the areas of environmental health, infectious disease, public health law, and injury prevention.

Environmental Health Services has been involved in this effort since the beginning, contributing subject-matter expertise to the development of the MAHC, helping manage the MAHC’s various technical and steering committees, and working with code-making organizations to align pool-related codes with key public health principles. In addition, Environmental Health Services is helping to develop recommendations and tools to make it easier for environmental health professionals at local, state, tribal and territorial levels to use and customize the MAHC.

Get Involved!

  • Explore the MAHC website to check out the 2018 edition and supporting materials.
  • Suggest and vote on changes to the MAHC with the Council for the Model Aquatic Health Code, which collects and votes on requested MAHC changes to recommend to CDC for final decision.
  • Join the conversation with the MAHC Network, a community of MAHC users, subject matter experts, and those hoping to learn about the code (includes regular webinars).
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