. Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... -- . rates per100,000 for Omaha have been:— 1908 1909 1910 1911 16 26 67 13 A reduction from 67 to 13 per 100,000 is remarkable and it isdifficult to say how much higher the rate would have been in1910 had not the sterilizing process been installed in May ofthat year. It is worthy of mention that the treated and settledwater shows an average of only 43 bacteria per cc, whereas theraw water from the Missouri River averages 30,477 per cc. Jersey City, N. J., was one of the first cities to
. Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... -- . rates per100,000 for Omaha have been:— 1908 1909 1910 1911 16 26 67 13 A reduction from 67 to 13 per 100,000 is remarkable and it isdifficult to say how much higher the rate would have been in1910 had not the sterilizing process been installed in May ofthat year. It is worthy of mention that the treated and settledwater shows an average of only 43 bacteria per cc, whereas theraw water from the Missouri River averages 30,477 per cc. Jersey City, N. J., was one of the first cities to adopt the hypo-chlorite treatment for municipal water supplies. The waterfrom the storage reservoir averages 12,000 bacteria per cc,with B. Coli present but the treated water averages only 10 percc, with B. Coli absent. Fig. 11 shows the Typhoid Feverdeath rates per 100,000 for a period of seven years, the hypo-chlorite treatment having been installed in Sept. 1908. The 3S\ y AS\K I IS £0 flafcfgr/a, LC Fig. Kansas Lity, Mo. Source of Supply 3edirn& \ Hypochlorite. UszcL flaw Wafer*. n/o Pop. A4-%ooo Missouri River J3. Coli in in ho cc. *^-H\jpochlo ri a F M f\ M«X 0 8 5 0 NM —J5 ource FiltrationProportion ofj-Samp/es Sh *6 /3. ft, Ohio. Rp*3is,ooo\f Supply -Oh)a Hive iHypochl Jtvo JB. Co/i frlte. Treat*,Present entUsU FUntreatedTreattd. ;7o Filtered Wafer Untreated. -Ft/fereil WaterUntreated *^r//tertd\Tre. Walk Zl eA. nib •e«L Water Treaty«L 111! Fab. 111! m eh. nn Jan. in st Feb. ma Ic/i/llA Apr. iits. Congress of Applied Chemistry 237 average for 1905, 1906 and 1907 is per 100,000 and thisis reduced to an average of per 100,000 for the three yearsfollowing the use of hypochlorite, namely 1909, 1910 and 1911,a reduction of 48% in the average Typhoid Fever death rate. Kansas City, Mo., takes its water supply from the muddy andpolluted Missouri River and by me
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