Section 611.1060 Violations

a) E. coli MCL Violations. A supplier is in violation of the MCL for E. coli when any of the conditions identified in subsections (a)(1) through (a)(4) occur.

1) The supplier has an E. coli-positive repeat sample following a total coliform-positive routine sample.

2) The supplier has a total coliform-positive repeat sample following an E. coli-positive routine sample.

3) The supplier fails to take all required repeat samples following an E. coli-positive routine sample.

4) The supplier fails to test for E. coli when any repeat sample tests positive for total coliform.

b) Treatment Technique Violation

1) A treatment technique violation occurs when a supplier exceeds a treatment technique trigger specified in Section 611.1059(a) and then fails to conduct the required assessment or corrective actions within the timeframe specified in Section 611.1059(b) and (c).

2) A treatment technique violation occurs when a seasonal system supplier fails to complete an Agency-approved start-up procedure prior to serving water to the public.

c) Monitoring Violations

1) Failure to take every required routine or additional routine sample in a compliance period is a monitoring violation.

2) Failure to analyze for E. coli following a total coliform-positive routine sample is a monitoring violation.

d) Reporting Violations

1) Failure to submit a monitoring report or completed assessment form after a supplier properly conducts monitoring or assessment in a timely manner is a reporting violation.

2) Failure to notify the Agency following an E. coli-positive sample as required by Section 611.1058(b)(1) in a timely manner is a reporting violation.

3) Failure to submit certification of completion of Agency-approved start-up procedure by a seasonal system is a reporting violation.

BOARD NOTE: Derived from 40 CFR 141.860.

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