In a large degree the
first condition is subordinated to the second. "Everything to the sewer"
is recognized by the most competent hygienists as the best system, but
only on the condition that water shall be abundant and that no
stagnation of the material shall be allowed. These problems, which were
for a long time studied by M. Durand-Claye, and to which he devoted
himself until his premature death unfortunately took him from us, have
received the attention of his devoted successors, who have already
brought to fruition interesting solutions which prompt us to hope for a
completely satisfactory system in the near future.
Three glass reservoirs, containing water from the Seine, from the Ourcq
and the Vanne, allow us to perceive the difference of quality which
exists between these three sources of supply, the first of which, with
its yellow color, is anything but appetizing, and the second is not much
less doubtful, while the third, alone, presents the limpidity and
transparency which one has a right to demand in potable water.
Nevertheless, one should not believe, as many persons do, that the water
that we see in this reservoir, and which has been taken within the
limits of Paris, is the same that is distributed from time to time
through each quarter. The water there used is taken up-stream and before
it has been soiled by its passage through the suburbs and city.
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