Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 611 - PRIMARY DRINKING WATER STANDARDS
Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS
Section 611.591 - Violation of a State-Only MCL
Current through Register Vol. 48, No. 38, September 20, 2024
This Section applies to State-only MCLs. If the result of analysis under Section 611.612 indicates that the level of any contaminant exceeds the State-only MCL, the CWS supplier must take certain actions:
a) Report to the Agency within seven days and initiate three additional analyses at the same sampling point within one month;
b) Notify the Agency and give public notice, as Subpart T specifies, if the average of four analyses exceeds the State-only MCL; and
c) After giving public notice, monitor at a frequency the Agency designates in a SEP. The supplier must continue monitoring until the results do not exceed the State-only MCL in two consecutive samples or until the effective date of a monitoring schedule the Board issues as a condition of a variance, adjusted standard, or enforcement action.
BOARD NOTE: This is an additional State requirement.
