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The importance of a sanitary survey
of water sources cannot be overemphasized.
With a new supply, the sani tary survey
should be made in conjunction with the
collection of initial engineering data,
covering the development of a given source
and its capacity to meet existing and future
needs. The sanitary survey should include
the detection of all health hazards and the
assessment of their present and future
importance. Persons trained and competent
in public health engineering and the
epidemiology of waterborne diseases should
conduct the sanitary survey. In the case of
an existing supply, the sanitary survey
should be made at a frequency compatible
with the control of the health hazards and
the maintenance...
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An International Comparison of Milk Supply Control Programs and Their Impacts
