Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WY5600019
PWS Name	GILLETTE, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	Yes
Population Served	32222
County Served	Campbell

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.

Violations

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
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	407	Returned to Compliance	01-OCT-2023	31-DEC-2023	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	406	Returned to Compliance	01-JUN-2023	30-JUN-2023	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	195	Known	01-JUL-1995	31-JUL-1995	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	295	Known	01-JUL-1995	31-JUL-1995	Yes

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
6	407	SOX	State Compliance achieved	19-JAN-2024	Region	System collected and reported required distribution system chlorine residual samples at same time and location as RTCR samples in January 2024. 7/29/2024. jc
3	406	SOX	State Compliance achieved	31-JUL-2023	Region	PWS RTC'd when they collected all their samples in July 2023. JSH 8/15/23

1 - 2 of 2

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
M3 (MADISON WF-ZONE 4)	11900	Yes	Well	Ground water	Permanent	Active
GWR M-9 COMBINED SOURCES	19566	Yes	Well	Ground water	Permanent	Inactive
GWR MADISON WELLS COMBINED SOURCE SAMPLE	19565	Yes	Well	Ground water	Permanent	Inactive
GWR FT UNION WELLS & FOX HILLS SAMPLE PT	19564	Yes	Well	Ground water	Permanent	Inactive
FOX HILLS 1(NOT IN USE)	11916	Yes	Well	Ground water	Permanent	Inactive
FOX HILLS 2(NOT IN USE)	11915	Yes	Well	Ground water	Permanent	Inactive
FORT UNION 11 (SOFT 11-NOT IN USE)	11912	Yes	Well	Ground water	Permanent	Inactive
FORT UNION 10 (SOFT 10-NOT IN USE)	11911	Yes	Well	Ground water	Permanent	Inactive
M12 (MADISON WF-ZONE 4)	20457	Yes	Well	Ground water	Permanent	Active
M11 (MADISON WF-ZONE 4)	20456	Yes	Well	Ground water	Permanent	Active
M10 (MADISON WF-ZONE 4)	17194	Yes	Well	Ground water	Permanent	Active
M9 (MADISON WF-ZONE 4)	17193	Yes	Well	Ground water	Permanent	Active
S27 (FORT UNION WF-ZONE 1)	17192	Yes	Well	Ground water	Permanent	Active
S26 (FORT UNION WF-ZONE 1)	17191	Yes	Well	Ground water	Permanent	Active
S25 (FORT UNION WF-ZONE 1)	17190	Yes	Well	Ground water	Permanent	Active
S24 (FORT UNION WF-ZONE 1)	17189	Yes	Well	Ground water	Permanent	Active
S23 (FORT UNION WF-ZONE 1)	17188	Yes	Well	Ground water	Permanent	Active
S22 (FORT UNION WF-ZONE 1)	17187	Yes	Well	Ground water	Permanent	Active
S21 (FORT UNION WF-ZONE 1)	17186	Yes	Well	Ground water	Permanent	Active
S12 (FORT UNION WF-ZONE 1)	17185	Yes	Well	Ground water	Permanent	Active
FH5 (FOX HILLS WF-ZONE 1)	17184	Yes	Well	Ground water	Permanent	Active
S9 (FORT UNION WF-ZONE 1)	11918	Yes	Well	Ground water	Permanent	Active
S17 (FORT UNION WF-ZONE 1)	11917	Yes	Well	Ground water	Permanent	Active
FH3 (FOX HILLS WF-ZONE 1)	11914	Yes	Well	Ground water	Permanent	Active
FH4 (FOX HILLS WF-ZONE 1)	11913	Yes	Well	Ground water	Permanent	Active
S18 (FORT UNION WF-ZONE 1)	11910	Yes	Well	Ground water	Permanent	Active
S19 (FORT UNION WF-ZONE 1)	11909	Yes	Well	Ground water	Permanent	Active
S20 (FORT UNION WF-ZONE 1)	11908	Yes	Well	Ground water	Permanent	Active
M1 (MADISON WF-ZONE 4)	11907	Yes	Well	Ground water	Permanent	Active
M2 (MADISON WF-ZONE 4)	11906	Yes	Well	Ground water	Permanent	Active
M4 (MADISON WF-ZONE 4)	11905	Yes	Well	Ground water	Permanent	Active
M5 (MADISON WF-ZONE 4)	11904	Yes	Well	Ground water	Permanent	Active
M6 (MADISON WF-ZONE 4)	11903	Yes	Well	Ground water	Permanent	Active
M7 (MADISON WF-ZONE 4)	11902	Yes	Well	Ground water	Permanent	Active
M8 (MADISON WF-ZONE 4)	11901	Yes	Well	Ground water	Permanent	Active
CITY OF GILLETTE NORTH ENTRANCE	11919	No	Distribution System/Zone	-	-	Active
CITY OF GILLETTE SOUTH ENTRANCE	20475	No	Distribution System/Zone	-	-	Active
CITY OF GILLETTE ZONE 2	20476	No	Distribution System/Zone	-	-	Active
CITY OF GILLETTE ZONE 3	20477	No	Distribution System/Zone	-	-	Active
GILLETTE, CITY OF	14510	No	Other	-	-	Inactive
MADISON WELL FIELD	19750	No	Other	-	-	Inactive
FORT UNION WELL FIELD	19751	No	Other	-	-	Inactive
FOX HILLS WELL FIELD	19884	No	Other	-	-	Inactive
MADISON PUMP STATION #6-ZONE 4	14856	No	Pump Facility	-	-	Active
FT UN/FOX HILLS PUMP STATION #1-ZONE 1	14987	No	Pump Facility	-	-	Active
DONKEY CREEK 1 PUMP STATION #7-ZONE 4	15403	No	Pump Facility	-	-	Active
DOUD PUMP STATION #5-ZONE 2	19539	No	Pump Facility	-	-	Active
LAKEWAY PUMP STATION #3-ZONE 3	19540	No	Pump Facility	-	-	Active
ECHETA PUMP STATION #2-ZONE 2&3	19541	No	Pump Facility	-	-	Active
RED HILLS PUMP STATION #4-ZONE 1	19542	No	Pump Facility	-	-	Active

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CHLORINATION & AERATION-ZONE 1	16846	Hypochlorination, Post	Disinfection
CHLORINATION & AERATION-ZONE 1	16846	Aeration, Packed Tower	Other
MADISON CHLORINATOR	16847	Hypochlorination, Post	Disinfection
PINE RIDGE TREATMENT PLANT	20474	Hypochlorination, Pre	Disinfection
PINE RIDGE TREATMENT PLANT	20474	Distillation	Softening (hardness removal)

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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