About us

The Pool Water Treatment Advisory Group was established as an independent entity in December 1984. PWTAG has a membership drawn from a wide range of relevant statutory, voluntary and professional organisations with an interest in pool water treatment and pool users

PWTAG is able to pursue its work without any commercial or other influence. It is a focus for debate and improvement in operational and management standards in an area which comes under significant financial and political, as well as technical pressure.

PWTAG has a major role in the treatment and quality of public and private swimming pool water, through:

  • monitoring and advising on important issues and developments – infections, pool management, pre-swim hygiene, new processes etc
  • reviewing existing advice and publications – on design, spa pools, cryptosporidiosis, filtration, asthma etc.; PWTAG was one of the authors of the WHO guidelines on pools
  • publishing books, reports, technical notes and press releases – on pool atmospheres, interactive water features etc.; and including our definitive book, Swimming Pool Water
  • research projects – on Cryptosporidium filtration, etc
  • developing standards and legislation – including a BSI Code of Practice based on our book. In 2012, PWTAG produced its own Code of Practice, again based on the book, and providing a functional benchmark for pool operation, and a basis for PWTAG’s Poolmark
  • developing training materials for pool operators, and accrediting trainers.

This work covers water in all swimming and spa pools whether under public or private ownership and management. PWTAG’s brief includes research; work on guidelines and standards; product assessment; advice to pool managers and operators as well as to local authorities (particularly environmental health), industry, etc.

Some of the issues addressed by PWTAG arise from within the group; many come from outside – either as specific requests and suggestions, or as a consequence of PWTAG’s advisory role. In general, PWTAG acts as a focus for debate and improvement in management and operational standards.

In March 2009, to coincide with the publication of the new edition of Swimming Pool Water, PWTAG Ltd was established – a company limited by guarantee. That month also saw the highly successful Pool & Spa Conference organised by PWTAG in London.

PWTAG has been actively represented at subsequent conferences in Porto (2011), Rome (2013), Amsterdam (2015) and Kos (2017).