WHAT HAPPENS TO THE WATER IN YOUR POOL?
This should be a question of prime consideration for all pool owners. In the past some pools did not use
filtering systems, the owner was faced with the problem of refilling the pool with clean water when this
became necessary. Refilling the pool was laborious, meanwhile the owner had an unsanitary pool with
unpleasant bathing owing to the poor clarity of the water. Today pool owners demand absolute hygiene,
crystal clear water and economy of effort. These objectives are achieved by effective filtration and
chemical treatment of the pool water.
After filling the pool with clean water in the summer, two basic factors can take place due to the expo-
sure of water to the sun and the air.
1.- Biological contamination. The water is contaminated by micro-organisms which may be airborne or
introduced by bathers.
These parasites reproduce rapidly in still warm water and algae may form giving a greenish appear-
ance to the pool water.
2.- Rainfall and wind may introduce dust, with leaves and seeds which muddy and pollute the pool
water.
These two factors generate in little time an unsanitary swimmingpool and unpleasant bathing.
Solutions to the problem:
1.- "CHEMICAL" TREATMENT
Maintain the correct level of sanitiser (chlorine, brom, oxygen...) in the water to combat existing
micro-organisms by its disinfecting action.
As chlorine is the more common method, it will be taken as the reference point.
2.- "PHYSICAL" TREATMENT
Provide the pool with a filtration system (filter and pump) to remove suspended particles from the
water.
PH LEVEL
The pH level is an indicator of acidity or alkalinity present in the water. The neutral value is 7.0. a pH
of 0-7 means levels of acidity whilst 7-14 gives levels of alkalinity. The pool usual readings vary between
6.8 and 8.4.
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ENGLISH