Current members
Dave Bosher (Chartered Institute of Building Services Engineers)
Janice Calvert (Royal Society of Chemistry)
Stephen Carder (British Association for Chemical Specialities) 
Rachel Chalmers (UK Cryptosporidium Reference Unit)
Jeni Colbourne (Drinking Water Inspectorate)
Richard Daniels (Department for Education)
Tom Devin (Institute of Engineers of Ireland),
Andy Elphick
Dennis Freeman-Wright (Amateur Swimming Association)
John Gheel (Sport Scotland)
Howard Gosling (Swimming Pool & Allied Trades Association)
Brian Guthrie Secretary
Mark Hichens (Water Management Society)
Teresa Isaacs (Drinking Water Inspectorate)
John V Lee (Health Protection Agency)
Gordon Nichols (Health Protection Agency),
Ian Nicks (ISRM)
Phil Penny
Robbie Phillips (Swimming Teachers Association)
Ralph Riley (Institute of Sport & Recreation Management)
Stuart Wainwright (Ministry of Defence)
Dave Whittingham

There is currently a vacancy for the British Water representative

Officers
The current chair of PWTAG is Janice Calvert; vice-chair is Mark Hichens.
The treasurer is Steve Carder. The part-time secretary, Brian Guthrie, is the only paid officer. These four, plus Ralph Riley of ISRM, representing the interests of swimmers, make up the executive committee.