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The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

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Violations

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Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	7022415	Returned to Compliance	01-JUN-2017	30-JUN-2017	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7022416	Returned to Compliance	01-APR-2017	30-JUN-2017	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7022412	Returned to Compliance	01-JUL-2013	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7022411	Returned to Compliance	01-JUL-2012	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4489799	Known	01-APR-1999	30-APR-1999	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4489899	Known	01-APR-1999	30-APR-1999	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2738195	Known	01-OCT-1994	31-OCT-1994	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1551892	Known	01-AUG-1992	31-AUG-1992	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1509492	Known	01-MAY-1992	31-MAY-1992	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	7021880	Known	30-JUN-1977	29-JUN-1981	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
7963816	7022416	SIF	State Public Notification received	26-JUN-2018	State	-
7963817	7022415	SIF	State Public Notification received	26-JUN-2018	State	-
7963810	7022412	SOX	State Compliance achieved	03-JUL-2014	State	-
7963810	7022411	SOX	State Compliance achieved	03-JUL-2014	State	-
7963599	4489799	SIE	State Public Notification requested	15-JUN-1999	State	-
7963599	4489899	SIE	State Public Notification requested	15-JUN-1999	State	-
3826795	2738195	SIE	State Public Notification requested	24-DEC-1994	State	-
1472193	1551892	SIE	State Public Notification requested	04-OCT-1992	State	-
1342092	1509492	SIE	State Public Notification requested	04-JUL-1992	State	-

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CC 10-PAS 4	26037	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL 13 (20714) ABANDONED	20422	Yes	Well	Ground water	Other	Inactive
WELL 11 (20712) ABANDONED	20420	Yes	Well	Ground water	Other	Inactive
WELL 10 (20711) ABANDONED	20419	Yes	Well	Ground water	Other	Inactive
WELL 8 (20709) ABANDONED	20417	Yes	Well	Ground water	Other	Inactive
WELL 7 (20708) ABANDONED	20416	Yes	Well	Ground water	Other	Inactive
WELL 6 (20707) ABANDONED	20415	Yes	Well	Ground water	Other	Inactive
WELL 14 (20715) EMERGENCY	20423	Yes	Well	Ground water	Emergency	Active
WELL 12 (20713) EMERGENCY	20421	Yes	Well	Ground water	Emergency	Active
WELL 9 (20710) EMERGENCY	20418	Yes	Well	Ground water	Emergency	Active
CC 11-PAS2	26038	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 12-PAS5	26039	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 13-PAS1	26040	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 14-PAS3	26041	Yes	Consecutive Connection	Surface water	Permanent	Active
CC 15-PAS6	31663	Yes	Consecutive Connection	Surface water	Permanent	Active
DOWNERS GROVE	23579	No	Distribution System/Zone	-	-	Active
SCHOOL LEAD SAMPLING	45711	No	Distribution System/Zone	-	-	Active
CHILDCARE FACILITY LEAD SAMPLING	45712	No	Distribution System/Zone	-	-	Active
GENERIC FINISHED SAMPLING STATION	27238	No	Sampling Station	-	-	Active
GENERIC RAW SAMPLING STATION	29660	No	Sampling Station	-	-	Active
MAPLE TOWER	45264	No	Storage	-	-	Active
71ST STREET	45265	No	Storage	-	-	Active
67TH STREET TOWER	45266	No	Storage	-	-	Active
DOWNERS DRIVE TOWER	45267	No	Storage	-	-	Active
SUMMIT AVENUE TOWER	45269	No	Storage	-	-	Active
FINLEY ROAD TOWER	45270	No	Storage	-	-	Active
HIGHLAND AVENUE TOWER	45271	No	Storage	-	-	Active
DISTRIBUTION ELEVATED STORAGE	11084	No	Storage	-	-	Inactive
TP 04-WELL 9 (EMERGENCY)	15179	No	Treatment Plant	-	-	Active
TP 07-WELL 12 (EMERGENCY)	15182	No	Treatment Plant	-	-	Active
TP 09-WELL 14 (EMERGENCY)	15184	No	Treatment Plant	-	-	Active
TP 01-WELL 6 (ABANDONED)	15176	No	Treatment Plant	-	-	Inactive
TP 02-WELL 7 (ABANDONED)	15177	No	Treatment Plant	-	-	Inactive
TP 03-WELL 8 (ABANDONED)	15178	No	Treatment Plant	-	-	Inactive
TP 05-WELL 10 (ABANDONED)	15180	No	Treatment Plant	-	-	Inactive
TP 06-WELL 11 (ABANDONED)	15181	No	Treatment Plant	-	-	Inactive
TP 08-WELL 13 (ABANDONED)	15183	No	Treatment Plant	-	-	Inactive
TP 10-PAS4	32025	No	Treatment Plant	-	-	Inactive
TP 11-PAS2	32026	No	Treatment Plant	-	-	Inactive
TP 12-PAS5	32027	No	Treatment Plant	-	-	Inactive
TP 13-PAS1	32028	No	Treatment Plant	-	-	Inactive
TP 14-PAS3	32029	No	Treatment Plant	-	-	Inactive
TP 15-PAS6	32030	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP 04-WELL 9 (EMERGENCY)	15179	Gaseous Chlorination, Pre	Disinfection
TP 07-WELL 12 (EMERGENCY)	15182	Gaseous Chlorination, Pre	Disinfection
TP 08-WELL 13 (ABANDONED)	15183	Gaseous Chlorination, Pre	Disinfection
TP 09-WELL 14 (EMERGENCY)	15184	Gaseous Chlorination, Pre	Disinfection
TP 10-PAS4	32025	Gaseous Chlorination, Pre	Disinfection
TP 11-PAS2	32026	Gaseous Chlorination, Pre	Disinfection
TP 12-PAS5	32027	Gaseous Chlorination, Pre	Disinfection
TP 13-PAS1	32028	Gaseous Chlorination, Pre	Disinfection
TP 14-PAS3	32029	Gaseous Chlorination, Pre	Disinfection
TP 15-PAS6	32030	Gaseous Chlorination, Pre	Disinfection

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