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PWS ID	WY5600206
PWS Name	COWLEY, TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	Yes
Population Served	800
County Served	Big Horn

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, Source Water (GWR)	Ground Water Rule	E. COLI	4000316	Open	29-SEP-2025	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	4000315	Returned to Compliance	30-DEC-2024	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	4000314	Returned to Compliance	30-DEC-2021	-	No
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	4000313	Returned to Compliance	02-NOV-2019	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	4000312	Returned to Compliance	22-JAN-2017	-	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	4000307	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	30100	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	31200	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	31500	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	32100	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	30700	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	31000	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	30200	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	30600	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	30300	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	31700	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	30400	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	30800	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	30500	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	31300	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	31600	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	31100	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	31400	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	32000	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	31900	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	30900	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	31800	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	595	Known	01-SEP-1994	30-SEP-1994	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	294	Known	01-MAY-1994	31-MAY-1994	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4000194	Known	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	493	Known	01-NOV-1992	30-NOV-1992	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	393	Known	01-AUG-1992	31-AUG-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	392	Known	01-AUG-1992	31-AUG-1992	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	191	Known	01-SEP-1991	30-SEP-1991	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	192	Known	01-SEP-1991	30-SEP-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	6V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	1V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	4V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	7V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	3V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	8V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	10V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	2V82	Known	01-APR-1982	31-MAR-1983	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	1645380	Known	01-JUL-1976	30-JUN-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1645480	Known	01-JUL-1976	30-JUN-1980	No

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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
69216	4000315	SOX	State Compliance achieved	06-MAR-2025	Region	-
69214	4000314	SOX	State Compliance achieved	09-MAR-2022	Region	-
69212	4000313	SOX	State Compliance achieved	10-DEC-2020	Region	-
69209	4000312	SOX	State Compliance achieved	10-DEC-2020	Region	-
69201	4000307	SOX	State Compliance achieved	10-MAY-2010	Region	RTC sampled in 2006
69200	30900	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	32100	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	32000	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31900	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31800	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31700	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31600	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31500	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30100	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30200	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30300	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30400	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30500	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30600	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30700	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	30800	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31000	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31100	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31200	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31300	SOX	State Compliance achieved	26-JAN-2000	Region	-
69200	31400	SOX	State Compliance achieved	26-JAN-2000	Region	-
1E82	4V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	6V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	1V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	2V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	3V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	10V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	8V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-
1E82	7V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-

1 - 34 of 34

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
TOWN OF DEAVER (WY5600016)-EMERGENCY	20872	Yes	Consecutive Connection	Surface water	Emergency	Active
MADISON WELL #1	12387	Yes	Well	Ground water	Permanent	Active
TOWN OF COWLEY	12388	No	Distribution System/Zone	-	-	Active
COWLEY, TOWN OF	10892	No	Other	-	-	Inactive
BLM HYDRANT	15257	No	Sampling Station	-	-	Active
STORAGE TANK (500K-GAL)	20870	No	Storage	-	-	Active
STORAGE TANK #1 (200-GAL)	16064	No	Storage	-	-	Inactive
TREATMENT PLANT (EMERGENCY)	20871	No	Treatment Plant	-	-	Inactive

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT (EMERGENCY)	20871	Gaseous Chlorination, Post	Disinfection

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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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