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Pool & Hot Tub Alliance Begins Revision of APSP-11 Standard for Water Quality

  • Apr 24, 2024

April 24, 2024

Media Contact:
Amy Willer
Director, Content and Communications
703-838-0083, ext. 121 |


(Alexandria, Va.) — The Pool & Hot Tub Alliance (PHTA), the trade association representing the swimming pool, hot tub, and spa industry, announces the upcoming review and revision of ANSI/APSP/ICC-11 2019 American National Standard for Water Quality in Public Pools and Spas and calls for change request submissions. A review and update of information contained in the existing standard will be based on scientific research, verifiable data, and best practices for water quality.

The revised PHTA-11 standard will provide recommended minimum guidelines for the specifications for water quality parameters in the public swimming pool, spa, and hot tub industry. It will cover a range of values relating to various chemicals that are acceptable for pool and spa operation, and for purposes of public health and safety. Stakeholders include manufacturers, builders, designers, retailers, U.S. public health and code officials, local municipalities, pool and spa operators, and service companies.

In adherence with the American National Standards Institute’s (ANSI) Essential Requirements, the PHTA-11 Standard Writing Committee (SWC) will convene regularly to review change requests for revisions to the standard. Proposals will be accepted on a continuous basis and must be submitted through the PHTA Change Request Form.

Members of the PHTA-11 SWC represent a broad, balanced cross-section of subject matter experts in the industry and community. The following individuals serve as members on the PHTA-11 SWC:

  • Dr. Roy Vore, Chair, Vore & Associates, LLC (Suwanee, GA)
  • Kevin Post, Vice Chair, Counsilman-Hunsaker (Evergreen, CO)
  • Karllee Barton, Solenis (Charleston, TN)
  • Dr. Gary Brown, Eastern Kentucky University (Richmond, KY)
  • Sarah Cheshire, Utah Department of Health and Human Services (Providence, UT)
  • Dr. Jim Egan, Jr., LaMotte Co. (Chestertown, MD)
  • Philip Escobedo, Fluidra (Carlsbad, CA)
  • Kenneth Gregory, Pentair (Washington, UT)
  • William Hamilton, Bill Hamilton & Associates (Titusville, FL)
  • Jennifer Hill, WTI (McKinney, TX)
  • Jenn Huang, ApothaQuali Solutions LLC (Ballwin, MO)
  • Dr. Joe Laurino, Periodic Products, Inc. (Sarasota, FL)
  • Jody O’Grady (Baltimore, MD)
  • Lisa Reiheld, International Code Council (Loudonville, OH)
  • Matthew Ryther, Acqua Pura Pool Service (Santa Clara, CA)
  • Allen Schnaak, Pool Resources LLC (Georgetown, SC)
  • John Weber, BioLab, A KIK Consumer Products Company (Lawrenceville, GA)
  • Rich Young, Aquatic Commercial Consulting (Saratoga, CA)

Following SWC approval, a draft version of the revised standard will be submitted to PHTA’s ANSI consensus voting body, the Standards Consensus Committee (SCC), for their review and approval. The standard will also be open to public comment as part of the ANSI process. All written, properly submitted perspectives or objections will be acknowledged and addressed by the PHTA-11 SWC and SCC. Afterwards, the proposed standard will be forwarded to ANSI for its approval.

For more information, visit the PHTA-11 webpage,, or contact PHTA Program Director of Standards and Technical Services Genevieve Lynn at


About the Pool & Hot Tub Alliance
The Pool & Hot Tub Alliance (PHTA), a non-profit organization with over 3,900 members from around the world, was established in 1956 to support, promote, and protect the common interests of the $62B pool, hot tub, and spa industry. PHTA provides education, advocacy, standards development, research, and market growth initiatives to increase our members’ professionalism, knowledge, and profitability. Additionally, PHTA promotes the use of pools by expanding swimming, water safety, and related research and outreach activities aimed at introducing more people to swimming, making swimming environments safer, and keeping pools open to serve communities. For more information, visit


Pool & Hot Tub Alliance Strategic Partners:

  • Biolab
  • Fluidra
  • Hayward
  • Heritage Pool Supply Group
  • Lou
  • Lyon Financial
  • Pentair
  • WatkinsWellness
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