Aquatics Blog

Contamination Burden Module Just Released For Public Comment

The Contamination Burden module for the Model Aquatic Health Code (MAHC) has just been posted by the CDC on July 20, 2012 for public comment. This module is unusual in that there is no code section.  . The deadline for public comments is October 14, 2012. Counsilman-Hunsaker strongly encourages everyone in the aquatic community to review and participate in this process.

MAHC Contamination Burden Module Abstract

Understanding the types of contaminants and the magnitude of disinfectant demand by various environmental factors (e.g., particulate) is an essential component to design and operate a recirculation and filtration system. Limited data currently exists, but a substantial research agenda has been created. The following is a summary of the existing data and areas where data are lacking. Since the Contamination Burden “module” is informational, this module is ANNEX-based only – NO CODE section accompanies it. After being posted for public comment, the information contained in this module will be merged into the appropriate MAHC modules upon final completion. The section numbering system will be different in this draft as there are no specific code sections yet assigned to any of this information.

The Model Aquatic Health Code Steering Committee and Technical Committees appreciate your willingness to comment on the draft MAHC modules. Click here to download comment form.

All public comments will filter back to the Technical Committee for review before the module is officially released.

MAHC Background

The Model Aquatic Health Code (MAHC) effort began in February 2005. The first industry standard was issued in 1958. In the subsequent 50 years, there have been at least 50 different state codes and many independent county codes. What was required in one jurisdiction may be illegal in another. It is clear that this historic approach is not working. Thus, the National Swimming Pool Foundation took a leadership position and provided funding to the Center for Disease Control (CDC) for the creation of the MAHC. The MAHC is intended to transform the patch work of industry codes into a data-driven, knowledge-based, risk reduction effort to prevent disease, injuries and promote healthy water experiences. To view the latest updates regarding the Model Aquatic Health Code go to

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