page 6- New Swimming Pool

VIII. Pool Water Supply
1. Quality of Supply

The bacterial, chemical and physical purity of
swimming pool water should be fully equal to the
best drinking water, If the water is very hard,
that is if it contains large quantities of
calcium bicarbonate, ordinary coagulation and
filtration may not give clear water, expecially
if the water is heated, In such a case coagulation
and sedimentation basin may be installed for pre-

| treatment or a water softening apparatus, mon be used.

2. Water Purity standards
(1-Whatever the source, the water in every swimming
_ pool should at all times, as a minimum meet the

standards of the American Public Health Association,
(See K, BU. Sanitation Dept.)

(2-Maintenance of Water standards (Consult K, U. San-
itation Dept.)

(3=<Bathing Load
The maximum bathing load permissible in a pool
is goverened by three factors:
a. The water area of the pool
b. The water content of the pool
ec, The rate of turnover of the pool contents,
(4—- Water Circulation in Pools

‘Water purity standards should be the same in
every part of the pool at all times,

The arrangements of inlets and outlets should
be such as to cause as complete mixing of entering
fresh water with all of the pool contents as possible,

Two general arrangements of inlets and outlets