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Hr, Wm. RfinhaMti has Vegas - Hey 26* 1950 f 23-3-2 | Hr. f« S. Bennett I 1#. R« 1. ? M & m ®b It has b»*a oar practice for & number of years to submit to the looal of floe of the State Board of Health a number of water samples eaoh week selected fro® scattered location* throughout the city* for bacteriological analyst*. These hare uniformly oome bach 100# with the exception of a rare instance now and then where contamination wee traced to the faucet or spigot from, which the sample was taken and which cleared let was flamed. up after the outHowever the routine samples submitted the forepart of Hay showed unfavorable reaction on the Nortji Side and the East Stewart district in four lo- oatlone indicating possible contamination of the water main. As soon as we were advised of this result by the Hoard of Health we Immediately obtained the chlorinating 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 continued 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 samples resubmitted from htahed cslaemae rleodc aupt*ions and analysis developed the contamination We thoroughly diecussed the matter with the Hoard of Health and the City Engineer in an effort to determine the cause as Hr. Carr stated we would be subject to law cults if people became ill and charged the cause to the water. He thought the cause might have 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 a* long as the wafer mains are under pressure* and if this, were the cause it appears probable that it would have shown up before now. In an effort to detrains the cause Dr. Oarr suggested that we obtain