All water mains shall be thoroughly flushed and disinfected before being placed in service. This work shall be done under the direct supervision of the Director of Public Utilities after a thorough flushing and cleaning out, sufficient chlorine concentration of at least 50 parts per million. The chlorine solution shall be retained in the lines for at least 24 hours. At the ends of this period, the chlorine residual shall be at least ten parts per million. The lines will then be flushed sufficiently to clear them of chlorine exceeding one part per million. Samples of water from the mains will then be taken and analyzed for bacteriological purity. If the mains fail to meet the bacteriological standard for purity, then disinfecting and flushing will be repeated until the standards have been met. All analysis for chlorine and bacteriological purity will be by town personnel.
(Ord. passed 6-21-2011)