6,000, the demand will be based upon
b. Quality and ease of development.
the
assumption
that
one
fire
is
With the possible exception of wells
occurring at any one time.
For a
and
municipal
supplies,
special
population less than 500, 150 to 250
treatment of the water will probably
gallons per minute (gpm) for 2 hours
be necessary to insure portability.
will be adequate; for a population
Several
factors
preclude
the
between 500 and 999, 500 gpm for 2
consideration of some sources.
It is
hours; and for a population between
not practical, for instance, to purify
1,000 and 5,999, 1,000 gpm for 4
water containing large quantities of
hours.
For a population of 6,000 and
acid mine waste or water excessively
over, 1,000 gpm is required for each
polluted with manufacturing wastes or
of
two
fires,
occurring
sewage.
Having two or more sources
simultaneously, and having a duration
capable of giving enough water, the
of 4 hours.
The source, therefore,
choice of a source can depend on the
must be large enough to supply the
quality and ease of development of a
total daily demand plus the fire
source.
Table 2 gives a tabular
protection water necessary for the
evaluation
of
the
five
types
of
installation.
sources.
Table 2.
Evaluation of Water Sources
8. TREATMENT
and
maintenance
of
water
supply
After the source, the next component
equipment. They work closely with the
of
a
water
supply
system
is
a
Army Medical Service to make certain
treatment
plant.
The
essential
that water is safe to use.
characteristics of water for human
consumption are that it be free of
(2) Army Medical Service.
The
poisons and free of disease-producing
Army
Medical
Service
determines
bacteria.
whether or not water is safe and makes
recommendations
to
the
proper
a. Responsibilities for treatment.
authorities. Personnel of the Medical
Service
inspect
water
points
(1) Engineer
units.
Engineer
and sources, test water, and work
units
are
responsible
for
making
closely
with
engineer
personnel
available a supply of approved water
to
make
certain
that
water
is
for all purposes to all Army units.
treated properly.
In addition, the
They are responsible for the design,
Medical Service studies and makes
procurement, installation, operation,
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