The UK’s authoritative guidance on swimming
pools and spas

Welcome to the online resources of The Pool Water Treatment Advisory Group (PWTAG), an independent, non-commercial membership organisation dedicated solely to raising standards in swimming pool water treatment.

PWTAG's members and technical advisers include most specialist organisations with an interest in pool water treatment and pool users; but PWTAG is able to pursue its work without any commercial or other influence.


Meet the PWTAG experts

 Technical Seminar Tuesday 3 February 2015 

The Pool Water Treatment Advisory Group will be out in force at Spatex this year. As well as hosting a stand throughout the conference (1-3 February at the Ricoh Stadium, Coventry), we have organised a day's seminar on Tuesday the 3rd. From 10am to 4pm, PWTAG experts will deal with a range of topics of vital importance to leisure managers, pool operators, local authority staff etc. Attendance at the conference is FREE. Details

PWTAG CoP 1.13
PWTAG’s code of practice, The management and treatment of swimming pool water
April 2014 revision available to download here

Accredited CoP Training Organisations

PWTAG CoP an introduction

download the introduction

Crypto video to view


The essential guide for everyone involved in the design, treatment, management and scrutiny of pools of all sorts – expanded, refined, updated, still authoritative. Chapter 1, What is a swimming pool? available free here. Visit Publications for more information or to order your copy



6th International
Swimming Pool &
Spa Conference

Legionnaires disease
- exploring the
implications of the
new HSE ACoP
HSE updates


The Model Aquatic
Health Code (MAHC):
A Model Public Swimming
Pool and Spa Code






Pharmaceuticals may mix with pool water and pose harm

Spa fined for psuedomonas outbreak

Study on the risks of swimming pool chemicals and the benefits of UV with chlorine


Crypto closes Arbroath pool

Pooping toddlers close Montrose pool 3 times

UK's oldest outdoor pool in Bath to be restored

Impact of cuts on swimming and sports centres

Pregancy and temperatures of spas, sauna and hot tubs

Making sense of chemistry - misconceptions about chemicals

Pool safety inspections - the different approach in the USA

Swimming pool electrocutions - a cause for concern

Unsupervised hopper pool double drowning

Hundreds sign petition to improve pool hygiene

Gym pool criticised for failure to carry out CPR correctly

Swimming pool water dyed gold in honour of Wanderers

Pool chemicals make children sick

Why did Aqua Vale stay open 11 days after diarrhoea health alert?

Can swimming help high blood pressure?

Swimming benefits your brain  not just your heart

High bacteria levels close Moray pool

Six children hospitalised after chemical vapours enter pools ventilation system

PWTAG first Accredited CoP Training Organisations Appointed

Urine + chlorine can damage health - Environmental Health news

Rebecca Adlington asks why are we closing so many pools?

Midlands only 50m pool to close

BSI issue new standards for moveable floors and bulkheads plus diving equipment BS EN 13451 10 & 11

Safety fears as ventilation duct falls into swimming pool

Ilfracombe pool loses total pool contents

Superchlorination fails to restore combines to normal

Normal service resumed after pool closure

Traces of bacteria found in water pipe at Penarth pool

March 2015 Pool conference announcement for Amsterdam

Pool operator fined £65k for cleaning chemical incident

UK review of European Swimming Pool Standards (EN15288) to take place

Woman can pursue claim for third party negligence in swimming pool trauma

News archive...