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Crypto and pools
Myths and realities Ralph Riley
Director of the Pool Water Treatment Advisory Group
Former CX of Institute of Bath Management (ISRM)
UK swimming pool expert in European and World sports standards
Myths and realities for pool operators
• Babies swimming
• The wrong pools
• Inadequate pools
• Bad habits
• Maladjusted behaviour
• Forms of faeces – ways of dealing with them
• Secondary disinfection
• Staff competence
• Prevention
Babies swimming - The facts
• Pseudo science
• Water too cold
• Nappies don’t protect against crypto pollution
• Babies swallow water
• Crypto not affected by normal levels chlorine
• Chemical effects of pools – not for babies
• Babies at risk
Hydrotherapy pools
Are hydrotherapy pool suited to baby classes?
Inadequate pools
Complicated pipe runs that no one is aware of-
Consequences can be poor hydraulics and short circuits
Bad habits
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A poster designed to encourage kids to do the right thing
A shower designed to get the important bits clean
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A shot from the 30’s showing that even in those early days
they knew hot to get the fundamentals right
In earlier days of swimming baths we knew what was important and promoted it!
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A poster from the Health and Cleanliness Council –
whatever happened to this laudable body – we need them
today more than ever
The ubiquitous footbath
In the UK we were fastidious about preventing foot
infections
More significant areas of the body were to publicly
sensitive to mention
Individual showers where bathers can strip off to shower before using the pool
Need to raise awareness that we share the water we swim in
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People need to know that a swimming pool is much like a
bath at home
Would you share your bath water with someone who was
not clean?
Member club, high fee paying swimming pool changing
Can a chocolate bar close a pool?
Pooping toddlers shut new Montrose swimming pool three times
Pooping toddlers shut a new £9 million
Scottish swimming pool three times in 12 days.
Dainty deposits from young swimmers at Montrose Sports Centre led to officials repeatedly closing pools due to “unforeseen circumstances” last month.
A swimsuit parade in Australia to break a world record
The reality of evacuating a UK pool on a rainy day in
winter is not so pleasant
Stool classification
Cryptosporidiosis characterised by Acute diarrhoea – watery liquid diarrhoea
But someone recovering from Cryptosporidiosis can continue to carry oocysts in their stools for up to 14 days
Solid faeces in pools
• Scoop the poop and put it where it should be
• Unlikely to be from someone with an acute gastric
illness
• If the operator is not certain of 100% removal
then treat as runny faeces
• Dependent upon the contamination we
recommend closing for say 30mins to allow all
visual evidence to be removed or dissipate
Runny faeces in pools
• If it’s a diarrhoeal type of incident then
suspect crypto
• Most viruses and bacteria killed in seconds
by chlorine not so crypto
• Safest option is to close the pool
• Multi solution – filtraton/coagulation,
superchlorination, UV
UV recommended by PWTAG
Staff competence
Welsh study showed
• Many pools did not have and could not draw
a schematic drawing of the pipework layout
• They did not have appropriate management
of their filter operation
• Had limited or no policy for dealing with a
crypto incident
Ralphs christmas wish list
• Trained staff
• Good hygiene and
cleaning
• Controlled entry
• Effective pre swim
hygiene
• Pee before swimming
• Babys pools or leak
proof neoprene pants
• Medium rate filters
with low dose
coagulation
• UV
• Effective backwashing
• Good hydraulics
Unannounced health inspections
• Bring back, where they don’t exist,
unannounced pool health inspections
carried out by trained officers who
know what they are talking about
• HAVE A HAPPY Crypto free
CHRISTMASS
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