HomeMy WebLinkAbout1905-010 Water Analysis Results - Dept of Bacteriology
P OREGON ACMICTILTURAL COLLEGE
and
F_,XWMIMFVT STATION,
Department of
BACT IOLOGY, r
Emile Pernoto
Corvallis, Oregon, 9- 19-05,
Mr. J. W. Me s s enger ,
Ashland, Oregon,
Dear Slr:-
I have made an analysis of the two samples of water vrhieh
you sent with the following; results:
Sample number one contained 39,588 organisms per cubic eentimer
(which is about one-third of a teaspoonful), Three plate cultures gave
this average,
Sample number two contained 36,420 organisms per e, a, as an
average of three plates.
If the strictest care was exe reis ed in taking the sample to
not eunta Anate it, the number of organisms is entirely too high for
the water to be sate for drinking purposes unless it is boiled, 1000
organisms per c, c, is considered dangerous; 39,580, as in sample
number one would indicate that the water contained a large amount of
organic r Batter , or was a ont aminat ed with s owage or surface, draining,
I did not find any pathogenie germs in either sample but oonsidering,
the largem number it would be advisable to boil or filter all the water
f or s ome time ,
We must of course take into consideration the fact that the
large number 9f germs in either sample is pertly due to their having;
multiplied in the bottle between the taking, of sar7ple and rraking of
plate cultures,
Sinoorely yours,
p Pernot,