Section 611.924  Very Small System Waivers

a)         If the supplier serves fewer than 500 people and it has taken TTHM and HAA5 samples under Subpart I, the supplier is not required to comply with this Subpart W unless the Agency notifies the supplier, by a SEP, that it must conduct standard monitoring under Section 611.921 or a system-specific study under Section 611.922.

b)         If the supplier has not taken TTHM and HAA5 samples under Subpart I or if the Agency notifies the supplier, by a SEP, that it must comply with this Subpart W, the supplier must conduct standard monitoring under Section 611.921 or a system-specific study under Section 611.922.

BOARD NOTE:  Derived from 40 CFR 141.604.

(Source:  Amended at 44 Ill. Reg. 6996, effective April 17, 2020)