Utah Admin. Code 309-550-13
The disinfection procedures of Section 4.7, AWWA Standard C651-05 shall be followed if a water main is cut or repaired.
The water system shall not allow a connection that may jeopardize water quality. Cross connections shall be eliminated by physical separation,
All pipe and fittings used in routine operation and maintenance shall be ANSI-certified as meeting NSF Standard 61 or Standard 14.
Water systems operated seasonally shall be disinfected and flushed according to AWWA Standard C651- 05 for pipelines and AWWA Standard C652-11 for storage facilities prior to each season's use. A satisfactory bacteriologic sample shall be obtained prior to use. During the non-use period, care shall be taken to close all openings into the system.
Utah Admin. Code R309-550-13