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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	408	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	403	Returned to Compliance	01-JAN-2000	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	199	Known	01-JUN-1999	30-JUN-1999	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	198	Known	01-JUL-1998	31-JUL-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	197	Known	01-APR-1997	30-APR-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	196	Known	01-SEP-1996	30-SEP-1996	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	193	Known	01-DEC-1992	31-DEC-1992	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	192	Known	01-SEP-1992	30-SEP-1992	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
306	408	SOX	State Compliance achieved	06-NOV-2018	Region	PWS RTC'd when they collected 2 TC samples on 11/06/18. JSH 2/19/19
303	403	SOX	State Compliance achieved	24-FEB-2003	Region	-

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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
CITY OF GILLETTE (WY5600019)	20841	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL #5	18364	Yes	Well	Ground water	Permanent	Active
WELL #4	16354	Yes	Well	Ground water	Permanent	Active
WELL #3	12486	Yes	Well	Ground water	Permanent	Active
WELL #2	12485	Yes	Well	Ground water	Permanent	Active
ANTELOPE VALLEY I&S DISTRICT	12487	No	Distribution System/Zone	-	-	Active
ANTELOPE VALLEY	10930	No	Other	-	-	Inactive
HYDROPNEUMATIC TANKS (2)	19824	No	Pressure Control	-	-	Active
BOOSTER STATION (2)	19823	No	Pump Facility	-	-	Active
CONTROL BUILDING TAP	15081	No	Sampling Station	-	-	Active
STORAGE TANK (630K-GAL)	16356	No	Storage	-	-	Active
STORAGE TANK (96K-GAL)	16358	No	Storage	-	-	Active
CHLORINE TREATMENT BUILDING	15706	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
CHLORINE TREATMENT BUILDING	15706	Hypochlorination, Post	Disinfection

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