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& \ 0 2 9 VI ABY 3g9a 1m950 / / f la* Vegas - May 26, 1950 W 2>3-2 Mr. Hcinhardts Bennett ^ RL. |§gi a. ' c f Mr. E. L. Adamsonit MAY It has been our practice far & number of years 1950 to submit to the leeal office of the State Board of Health # a number of water samples each week eeleeted from scattered locations throughout the city, for bacteriological analysis, these hare uniformly ooste back 100$ with the exception of a rare instance new and then where contamination was traced to the faucet or spigot from which the sample was taken and whieh cleared up after the out** let was flamed. However the routine eaaplea submitted the forepart of May showed unferorablt reaction on the HoytM Side and the East Stewart dlstrlet In four In** Nations indicating possible contamination of the water main. As soon as we were advised of this result by the Board of Health we Immediately obtained the ohlorlnattng machine (temporarily out of service from the open spring)' and commenced dosing Chlorine into the Ogden Street transmission main from which the north Side receives Its water supply and hence Into the rest of the system, this operation was o on tinned for four days and nights and tests were made at the extreme ends of the system with the residual. Indicator to determine that the chlorine was getting thru In the proper amounts. At the end of this time the line was thoroughly flushed and new sample# resubmitted from the same locations and analysis developed the contamination had cleared up. We thoroughly die cussed the matter with the Board of Health and the City Engineer In an effort to determine the cause as Dr. Garr stated we would be subject to Isos suits if people became 111 and charged the eause to the water. He thought the cause might hare been due to the close proximity of sewer mains and water mains in locations where they crossed over each other, but this does not appear to be likely as long as the water mains are under pressure, and if this were the ecus# it appears probable that It would have shown up before new. In an effort to determine the cause 3r. Garr suggested that we obtain