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NEWS
GWI unveils latest edition of Hydrothermal Spa & Wellness Development Standards to elevate industry practices
POSTED 28 May 2024 . BY Megan Whitby
Focused on thermal experiences and wet areas, the publication was sponsored by Accor and Hilton Credit: Shutterstock/PH888

Credit: GWI
When implemented correctly, hydrothermal experiences play a key role in programming, offering proven wellness benefits
– Susie Ellis
The GWI has released a 230-page guide to help set industry standards for thermal and wet area design
Realised with the expertise of GWI Hydrothermal Initiative members, it offers crucial information for planning, building and understanding hydrothermal spaces.
Sponsored by Accor and Hilton, the guide is available for free download
The 2024 publication marks the fourth edition of the Hydrothermal Spa & Wellness Development Standards
The Global Wellness Institute (GWI) has published the fourth edition of the Guide to Hydrothermal Spa & Wellness Development Standards

The 230-page guide, developed in collaboration with the GWI Hydrothermal Initiative* members, continues to set the industry standard for designing and constructing thermal experiences and wet areas in commercial and residential properties.

Originally published in 2014, the publication is designed to help stakeholders – including owners, operators and consultants – understand the complexity of these spaces.

Regardless of the size and scope of a project, the manual guides readers through everything from project planning to building and construction considerations, including recommended standards and materials, while clearly defining the functions and benefits of common thermal bathing and wet area experiences and treatments, both communal and private.

“I’ve long been convinced that, when implemented correctly, hydrothermal experiences play a key role in wellness programming, offering proven wellness benefits that are difficult to achieve any other way,” said Susie Ellis, GWI’s CEO and co-founder.

“Available for free download, the fourth edition of this resource has been updated and expanded, and includes crucial information to help anyone embarking on this type of build, whether for a home, spa, bathhouse or fitness centre.”

"Our main goal with this resource has been to provide information readers can’t find elsewhere,” said Don Genders, chair of the GWI Hydrothermal Initiative and CEO of Design for Leisure.

“This book is the result of a unique collaboration between experts, written to enable readers to walk away with a clear understanding of how hydrothermal areas should be designed and constructed, while also providing historical references, wellness benefits, practical tips, and even common building mistakes – all in an effort to elevate industry standards and encourage builds that are both high quality and sustainable."

In addition to the support from Hydrothermal Initiative members, sponsorship was provided by Accor and Hilton.

*About the GWI Hydrothermal Initiative
The GWI Hydrothermal Initiative aims to increase transparency and awareness in the design and implementation of all elements of spas and wellness facilities involving thermal and wet treatments.

The initiative is supported by its member companies including Barr & Wray, Design for Leisure, Dornbracht, Gharieni Group, HygroMatik, Kemitron, KLAFS, Lux Elements, SnowBox, Sommerhuber, TechnoAlpin Indoor, Unbescheiden and WDT.
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NEWS
GWI unveils latest edition of Hydrothermal Spa & Wellness Development Standards to elevate industry practices
POSTED 28 May 2024 . BY Megan Whitby
Focused on thermal experiences and wet areas, the publication was sponsored by Accor and Hilton Credit: Shutterstock/PH888
Credit: GWI
When implemented correctly, hydrothermal experiences play a key role in programming, offering proven wellness benefits
– Susie Ellis
The GWI has released a 230-page guide to help set industry standards for thermal and wet area design
Realised with the expertise of GWI Hydrothermal Initiative members, it offers crucial information for planning, building and understanding hydrothermal spaces.
Sponsored by Accor and Hilton, the guide is available for free download
The 2024 publication marks the fourth edition of the Hydrothermal Spa & Wellness Development Standards
The Global Wellness Institute (GWI) has published the fourth edition of the Guide to Hydrothermal Spa & Wellness Development Standards

The 230-page guide, developed in collaboration with the GWI Hydrothermal Initiative* members, continues to set the industry standard for designing and constructing thermal experiences and wet areas in commercial and residential properties.

Originally published in 2014, the publication is designed to help stakeholders – including owners, operators and consultants – understand the complexity of these spaces.

Regardless of the size and scope of a project, the manual guides readers through everything from project planning to building and construction considerations, including recommended standards and materials, while clearly defining the functions and benefits of common thermal bathing and wet area experiences and treatments, both communal and private.

“I’ve long been convinced that, when implemented correctly, hydrothermal experiences play a key role in wellness programming, offering proven wellness benefits that are difficult to achieve any other way,” said Susie Ellis, GWI’s CEO and co-founder.

“Available for free download, the fourth edition of this resource has been updated and expanded, and includes crucial information to help anyone embarking on this type of build, whether for a home, spa, bathhouse or fitness centre.”

"Our main goal with this resource has been to provide information readers can’t find elsewhere,” said Don Genders, chair of the GWI Hydrothermal Initiative and CEO of Design for Leisure.

“This book is the result of a unique collaboration between experts, written to enable readers to walk away with a clear understanding of how hydrothermal areas should be designed and constructed, while also providing historical references, wellness benefits, practical tips, and even common building mistakes – all in an effort to elevate industry standards and encourage builds that are both high quality and sustainable."

In addition to the support from Hydrothermal Initiative members, sponsorship was provided by Accor and Hilton.

*About the GWI Hydrothermal Initiative
The GWI Hydrothermal Initiative aims to increase transparency and awareness in the design and implementation of all elements of spas and wellness facilities involving thermal and wet treatments.

The initiative is supported by its member companies including Barr & Wray, Design for Leisure, Dornbracht, Gharieni Group, HygroMatik, Kemitron, KLAFS, Lux Elements, SnowBox, Sommerhuber, TechnoAlpin Indoor, Unbescheiden and WDT.
RELATED STORIES
US named world’s largest wellness economy, reaching US$1.8 trillion valuation


The Global Wellness Institute (GWI) has released new data on the US’ wellness economy, valuing it at US$1.8 trillion.
GWI’s new Wellness Policy Toolkit proposes shift from wellness tourism to ‘wellness in tourism’


Industry research organisation, the Global Wellness Institute (GWI), has announced the release of a new report called Wellness Policy Toolkit: Wellness in Tourism.
New GWI study unveils global wellness market leaders: US, China and Germany


The US, China, Germany, Japan and the UK have been identified as the world’s five largest wellness markets in new research released today by the Global Wellness Institute (GWI).
FEATURE: News report: Peak performance


Fresh research shows the global wellness economy is now worth US$5.6 trillion
MORE NEWS
Bob Rogers hands BRC to long-serving leadership team
Experience design company, BRC Imagination Arts, has completed a transition that sees founder Bob Rogers pass ownership of the business to four long-serving senior executives, while remaining actively involved with the company.
Rainer Maelzer joins Therme Group as chief entertainment officer
Rainer Maelzer, an experiential entertainment innovator, has been appointed chief entertainment officer by Therme Group.
Movie Park Germany reveals new Paramount attraction as part of its 30th anniversary celebrations
Movie Park Germany has opened a new Paramount Pictures-themed attraction as part of its 30th anniversary celebrations, using immersive storytelling and adaptive reuse to reinforce the park’s longstanding “Hollywood in Germany” positioning.
Therme Manchester reveals 90:90 strategy – 90 per cent of the UK population within a 90-minute drive of a Therme
Therme Manchester’s 28-acre development, which will include interconnected glass pavilions that measure 65,000sq m, will be the largest bathing and wellbeing attraction in the world once complete, according to prof David Russell, CEO of Therme UK. 
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COMPANY PROFILES
iPlayCO

iPlayCo was established in 1999. [more...]
DJW

David & Lynn Willrich started the Company over thirty years ago, from the Audio Visual Department [more...]
Polin Waterparks

Polin was founded in Istanbul in 1976. Polin has since grown into a leading company in the waterpa [more...]
Alterface

Alterface’s Creative Division team is seasoned in concept and ride development, as well as storyte [more...]
+ More profiles  
FEATURED SUPPLIER

Iconic Liverpool attraction opens door to new operators
An opportunity to reimagine one of the UK’s most recognisable towers has been formally opened by Rivington Hark, as St Johns Beacon invites operators and partners to shape its next phase. [more...]
CATALOGUE GALLERY
+ More catalogues  
DIRECTORY
+ More directory  
DIARY

 

09-11 Jun 2026

World Sauna Forum 2026

Savutuvan Apaja, Haapaniemi, Finland
23-26 Aug 2026

Elevate Spa Riviera Maya Edition

The Riviera Maya Edition Kanai, Playa del Carmen, Mexico
+ More diary  
 


ADVERTISE . CONTACT US

Leisure Media
Tel: +44 (0)1462 431385

©Cybertrek 2026

ABOUT LEISURE MEDIA
LEISURE MEDIA MAGAZINES
LEISURE MEDIA HANDBOOKS
LEISURE MEDIA WEBSITES
LEISURE MEDIA PRODUCT SEARCH
ATTRACTIONS MANAGEMENT NEWS
ATTRACTIONS HANDBOOK
PRINT SUBSCRIPTIONS
FREE DIGITAL SUBSCRIPTIONS