35 Ill. Adm. Code 604.170
Security
Section 604.170Â Security
a)Â Â Â Â Â Â Â Â Each
community water supply well, well house, raw water intake structure, pumping
stations, treatment plant buildings, and treated water storage reservoirs must
be protected to prevent vandalism and entrance by animals or unauthorized
persons.
b)Â Â Â Â Â Â Â Â Fencing,
locks on tank access hatches, or other necessary precautions must be provided
to prevent trespassing, vandalism, and sabotage.