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


News
1 to 12 of 9515 news stories
17 Jul 2026
Gran Hotel Taoro in northern Tenerife, Spain, has completed the final phase of its three-year renovation with the debut of its Sandára Wellness Centre. The 199-key property originally opened in 1890 and it has been ... More
16 Jul 2026
Hand and Stone Massage and Facial Spa, the spa business with more than 650 locations across the US and Canada, has appointed franchise expert Carrie Walsh as CEO as the company plans to expand. Walsh ... More
14 Jul 2026
Turkey came first at this year’s World Championship in Massage between 3-5 July in Copenhagen, Denmark. Organised by the International Massage Association (IMA), the ninth edition of this tournament saw the highest number of participants ... More
14 Jul 2026
Synergy – The Retreat Show, the global trade show for retreats, has launched a global research initiative that will provide insights into the retreat sector from both consumer and industry perspectives. The resulting report, which ... More
14 Jul 2026
The Wellness Tourism Association (WTA) has published a non-regulatory global industry framework designed to ensure the retreat market offers responsible experiences. The Six Principles for Responsible Retreats have been created to provide a shared reference ... More
12 Jul 2026
A new survey of international spa practitioners shows that stress, burnout and wellbeing concerns have caused one in three respondents to consider leaving the industry. The Therapist Wellbeing Report is based on responses from 159 ... More
16 Jul 2026
The inaugural HCM Invest event has opened applications for pitching slots ahead of its launch in London on 21 October 2026. The event will bring together companies seeking investment and investors looking for opportunities across ... More
09 Jul 2026
Wellness hotels generating less than US$1 million (€932,700, £785,200) – or 10 per cent of total revenue from wellness and leisure – recorded the strongest RevPAR and TRevPAR growth in 2025 across categories when compared ... More
08 Jul 2026
Robert Thurman, an expert on Tibetan Buddhism and the spiritual director of Menla Retreat and Dewa Spa in Woodstock, has died, aged 84. Thurman – also known for being father to actress Uma Thurman – ... More
10 Jul 2026
Fairmont Cheshire, The Mere, has opened today (10 July) near Knutsford in the north-west of England with a 1,715sq m Fairmont Spa that has been designed using a ‘Wellness without Walls’ concept. The Select Group, ... More
10 Jul 2026
Marriott International has partnered with Fitwel, a healthy building certification system that aims to optimise occupant health.  Marriott has become Fitwel’s first Enterprise Partner and the new healthy building solutions will be implemented across the ... More
10 Jul 2026
Becky Pelkonen, the sauna advocate and researcher, has unveiled the draft of a global public sauna-bathing charter. The ten guiding principles form the foundation for people building, running and championing public sauna-bathing. The draft, which ... More
     
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International SPA Association - iSPA
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