Section 604.1455  Water Service Line 

a)         A community water supply must not supply water through a water service line to more than a single property, dwelling or rental unit.

b)         If a pipe from the water main or source of potable water supply is accessible to more than one property, dwelling or rental unit, the pipe will be considered a water main subject to all permitting requirements of 35 Ill. Adm. Code 602.

c)         A pipe is accessible when it crosses the property boundary of another landowner to reach the property, dwelling or rental unit being served.