Section 620.601  Purpose of a Health Advisory

This Subpart establishes procedures for issuing a Health Advisory that specifies guidance levels that, in the absence of standards in Section 620.410, must be considered by the Agency in:

a)         Establishing groundwater cleanup or action levels when there is a release or substantial threat of a release of:

1)         A hazardous substance or pesticide; or

2)         Any other contaminant that represents a significant hazard to public health or the environment.

b)         Determining whether a community water supply is taking its raw water from a site or source in compliance with the siting and source water requirements of 35 Ill. Adm. Code 604.200.

c)         Developing Board rulemaking proposals for new or revised numerical standards.

d)         Evaluating mixtures of chemical substances.

(Source:  Amended at 49 Ill. Reg. 4488, effective March 28, 2025)