77 Ill. Adm. Code 900.30
Special Requirements
Section 900
Section 900.30Â Special
Requirements
a)        More Stringent Conditions. The Department will require more
stringent conditions be placed on the non-community public water system if a
potential health problem is detected on the basis of a sanitary survey,
laboratory analyses, location of known sources of pollution, condition of the
water supply, type of construction or information from previous owners which
might indicate the water would be too hazardous to drink. Such conditions
include, but are not limited to, sampling for additional contaminants. The
Department shall also require treatment or the discontinuance of the use of the
non-community public water system, if the system is found to jeopardize public
health or if the system is found to contain hazardous substances or disease
causing organisms.
b)        Use of Chemical Additives. Chemicals approved for the
treatment of water shall include, but are not limited to, chlorine and
chemicals used for water softening, flocculation and coagulation. Such
chemicals shall be approved if the method of feed and the concentration of
these chemicals does not jeopardize the health of the user as determined by the
Department pursuant to the level of toxicity of the chemical.
c)Â Â Â Â Â Â Â Â The Department shall be notified of the occurrence of any
waterborne disease outbreak by the water system operator as soon as the
operator has information that such an outbreak has occurred.