WILL PIFY Wffl BI USE CP CHLORINE Process to Be Installed in City System Within Next Thirty Days. Salt Lake City's water supply will be purified by the chlorine process, according accord-ing to a decision reached by the city commission yesterday. The commission, sitting as a committee of the whole, authorized W. H. Shearman, commissioner commis-sioner of the waterworks department, to order by telegraph two sets of the chlorine apparatus and equipment at an estimated cost of $1850. One set will be placed at the parley's canyon reservoir and the second at the conduit leading Into the Thirteenth South street district. dis-trict. Tests bare proved the contamination of the water supply coining out of Big Cottonwood and Parley's creek and, although al-though steps have been taken to minimize the pollution of the water supply, it has been found that complete elimination of tiie colon bacilli due to the presence of horses in the canyons is almost impossible. impossi-ble. The chlorine process of purification has met with high approval in the east and after Investigation Dr. T. B. Ueatty, secretary sec-retary of the state board of health; Dr. Samuel G. Paul, county sanitation officer, of-ficer, and Dr. R. W. Ashley, city health commissioner, have indorsed and recommended recom-mended the process. As City creek is free from contamination contami-nation the chlorine process will not be installed Into that branch of the water service which supplies the Capitol hill section, the business district north of First South treet, the north bench above Second South street and the east bench above the Thirteenth East street reservoir. reser-voir. The chlorine apparatus consists of metallic, tanks which introduce the chlorine sas into the conduits or pipelines. pipe-lines. The chlorine, it is said, while absolutely purifying1 the water, dissolves itself without trace of odor of taste. The cost of supplying the system Is estimated to be less than SI- a day. The new system should be installed within the next thirty days.