Lewiston evening teller. [volume] (Lewiston, Idaho) 1903-1911, 1907-10-29

10y taIHulauon. the mineral matter
consists of:
Sodium chloride %
Potassium sulphatc II
Sodium carbonate 80
Potassium carbonate IS
Calcium carbonate l3-
Magnesium carbonate 80
iron ard aluminium as oxides .lG
Silica 19S
Notes:
1. The L. S. gallon is taken as Sc
5&495 grains.
,. The hardness of water is stated
il degrees, each degree corresponding
, g one gram of carbonate of lime per
sa.!on of water.
by temporary hardness is meant
that what can mostly be removed by
boiling. Permanent hardness cannot
be 50 removed. a water with a trou
hlesome amount of permanent hard
! ness is usually treated with various
chemicals to remove the same before
using it for boiler purposes.
J. 5. JONES.
With these analyses Prof Jones
sent to us the following letter, which
! may be of interest to you as showing
IN some measure the desirablity Of
each source of water supply for do
nestle use:
Gentlemen: l am sending you the
results of the analyses Of the waters
received from you on the 18th of Sep
| tomber l have stated the results in
parts per million and grains per L. S.
gallon and believe you will have no
dtti2ulty in interpreting the results
| with the aid of the remarks made be-
| low the analytical data.
Both waters are remarkably pure as
regards the mineral constituents. Prac-
dcally there could be but little choice
between them from this standpoint. b
would doubtless leave slightly more
| Rncrustation in the boilers if used
| there, but neither would be bad
Presence Of Organic Matter.
With respect to the free and COM
bined ammonia, however, there is some
difference in favor of B. The amounts
are high in each case, but need not be
considered dangerous from a sanitary
standpoint, If you are sure that no
%eWage gets into the river near the
intake. OF course, l cannot speak
from personal knowledge upon that
point, but from the behavior of both
waters during this part of the an
I oh til, 49,
to be the natural result of much rain
fall and such organic matter as leaves
and twigs from trees. Very truly
yours, j. SHIRLEY JONES.
Station Chemist.
Analysis of Health Officer.
We have submitted these analyses
to the CITY health officer of this CITY
and from the explanation and advice
which he has given to us concerning
the differences of the two analyses, we
have come to the conclusion that the
present water supply of the city is an
excellent one, but that it is inferior to
/ the proposed supply from Waha
| Springs The differences in the water
/ furnished from the two supplies for
domestic use are substantially as fol-
/ lows:
Gentlemen: In comparing the
analyses of the river water with the
! Waha water / see, as Prof, Jones
states, that the amount of ammonia
in both samples is rather large The
significance of this is as follows:
"The amount of ammonia in water
, corresponds to certain extent to the
amount of organic matter That or
ganfc matter may be either animal or
vegetable. The animal is there from
or from decomposed dead animals getA
ting into the stream. Vegetable would
be from the decayed vegetation in the
water through leaves or soil contain
ing decomposed vegetation. In looking
at the analyses we see that the amount
of ammonia is nearly third more
in the river water than in that from
'Waha, and the amount of oxygen re-
| CURED to oXidize the organic matter
is nearly twice as great. 1t is there
fore evident that there is more organic
matter in the river water.
Now, the presence of dead animals
or sewage in the Waha water is prae-
tically impossible, therefore we must
attribute the presence of organic mat
ter in 1t TO its being filtered through a
soil containing leaves and decomposed
vegetation and therefore harmless in
that amount. In the river water, how
| ever conditions are quite different
4 and while / believe that perhaps a
4 large percentage of the organic mat
ter there is due to vegetable matter we
cannot entirely eliminate the animal
| part.
1.-THE only other thing to consider in
these analyses is the hardness. The
Waha watfr is shown to be consid-
erably harder, but not enough to in
jure IT is the least for domestic pur-
poses. It's only effect would be that #
would be a little harder on steam boil