Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0109006
PWS Name	CHEYENNE WELLS TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	840
County Served	Cheyenne

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
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005022	Returned to Compliance	22-JUL-2021	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005020	Returned to Compliance	16-AUG-2020	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005017	Open	06-MAY-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	4005018	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	4005019	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005010	Returned to Compliance	16-FEB-2020	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005013	Returned to Compliance	16-FEB-2020	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4004988	Returned to Compliance	10-JAN-2020	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	4005015	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	4005009	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005012	Returned to Compliance	16-NOV-2019	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005014	Returned to Compliance	17-OCT-2019	-	No
MCL	Maximum Contaminant Level Violation, Single Sample	Arsenic Rule	Arsenic	4004987	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4005011	Returned to Compliance	16-AUG-2019	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4004986	Returned to Compliance	16-MAY-2019	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4004985	Returned to Compliance	16-FEB-2019	-	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4004984	Returned to Compliance	16-NOV-2018	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004983	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004982	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	4005000	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4004992	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	4005006	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	4005007	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	4005005	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	4005001	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	4004999	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	4005003	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	4005002	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	4005004	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	4004993	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	4004994	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4004998	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4004995	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4004996	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4004997	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	4004977	Returned to Compliance	01-FEB-2015	-	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	4005008	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4004976	Returned to Compliance	01-JAN-2014	31-MAR-2014	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	4004989	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	4004991	Returned to Compliance	01-JAN-2014	31-DEC-2019	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	4004968	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	4004962	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	4004961	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	4004960	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	4004959	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb	4004958	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	4004957	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfone	4004956	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Aldicarb sulfoxide	4004955	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	4004954	Returned to Compliance	01-APR-2012	30-JUN-2012	No

1 - 50 of 135

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4005041	4005022	SOX	State Compliance achieved	16-AUG-2021	State	-
4005039	4005008	SOX	State Compliance achieved	09-FEB-2021	State	Analyte sampled in Feb 2021, SOXing 5/7/21, jlm.
4005039	4004999	SOX	State Compliance achieved	09-FEB-2021	State	Analyte sampled in Feb 2021, SOXing 5/7/21, jlm.
4005039	4004994	SOX	State Compliance achieved	09-FEB-2021	State	Analyte sampled in Feb 2021, SOXing 5/7/21, jlm.
4005039	4004993	SOX	State Compliance achieved	09-FEB-2021	State	Analyte sampled in Feb 2021, SOXing 5/7/21, jlm.
4005034	4005020	SOX	State Compliance achieved	10-NOV-2020	State	-
4005032	4005018	SOX	State Compliance achieved	30-SEP-2020	State	System made the 009/009T well/EP an emergency source on 09/30/2020; jlm 9/30/2020.
4005031	4005019	SOX	State Compliance achieved	23-SEP-2020	State	System updated its monitoring plan and submitted corresponding documentation on 7/23/2020 indicating that 004 and 004T were locked and tagged out, making it an emergency source only; therefore, closed monitoring schedules and am SOX'ing these MCL violations; jlm 9/23/2020.
4005031	4005009	SOX	State Compliance achieved	23-SEP-2020	State	System updated its monitoring plan and submitted corresponding documentation on 7/23/2020 indicating that 004 and 004T were locked and tagged out, making it an emergency source only; therefore, closed monitoring schedules and am SOX'ing these MCL violations; jlm 9/23/2020.
4005031	4004987	SOX	State Compliance achieved	23-SEP-2020	State	System updated its monitoring plan and submitted corresponding documentation on 7/23/2020 indicating that 004 and 004T were locked and tagged out, making it an emergency source only; therefore, closed monitoring schedules and am SOX'ing these MCL violations; jlm 9/23/2020.
4005029	4004990	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4005003	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4005002	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4005001	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4005000	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4004998	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4004997	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4004996	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4004995	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005030	4004992	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4004991	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005029	4004989	SOX	State Compliance achieved	15-SEP-2020	State	System reported results for required monitoring period of 1/1/17-12/31/19; jlm 9/15/2020.
4005028	4005015	SOX	State Compliance achieved	24-AUG-2020	State	System sampled 6/22/2020 (correctly the following monitoring period, so SOXing violation); jlm 8/24/2020.
4005027	4005007	SOX	State Compliance achieved	15-JUL-2020	State	System sampled fluoride in April 2020 at 003T, 004T, 009T, and 011; jlm 7/15/2020.
4005027	4005004	SOX	State Compliance achieved	15-JUL-2020	State	System sampled fluoride in April 2020 at 003T, 004T, 009T, and 011; jlm 7/15/2020.
4005027	4005005	SOX	State Compliance achieved	15-JUL-2020	State	System sampled fluoride in April 2020 at 003T, 004T, 009T, and 011; jlm 7/15/2020.
4005027	4005006	SOX	State Compliance achieved	15-JUL-2020	State	System sampled fluoride in April 2020 at 003T, 004T, 009T, and 011; jlm 7/15/2020.
4005011	4005011	SOX	State Compliance achieved	27-APR-2020	State	-
4005011	4004985	SOX	State Compliance achieved	27-APR-2020	State	-
4005011	4004984	SOX	State Compliance achieved	27-APR-2020	State	-
4005011	4005012	SOX	State Compliance achieved	27-APR-2020	State	-
4005011	4005013	SOX	State Compliance achieved	27-APR-2020	State	-
4005011	4005014	SOX	State Compliance achieved	27-APR-2020	State	-
4005011	4004986	SOX	State Compliance achieved	27-APR-2020	State	-
4005005	4005010	SOX	State Compliance achieved	06-APR-2020	State	System notified me in writing that letters went out 4/6/2020 and was posted on website today, jlm 4/8/2020.
4005004	4004988	SOX	State Compliance achieved	06-APR-2020	State	System distributed and submitted PN to department on 4/2/2020; therefore, SOXing this violation, jlm 4/6/2020.
4005000	4004975	SOX	State Compliance achieved	13-FEB-2020	State	System collected 4000 sample from 003T in 2018 (2014-2019 6Y monitoring period), returning this violation to compliance, jlm 2/13/2020.
4004999	4004983	SOX	State Compliance achieved	13-FEB-2020	State	System collected 2019 nitrate sample, returning violation to compliance, jlm 2/13/2020.
4004998	4004982	SOX	State Compliance achieved	13-FEB-2020	State	System collected 2019 nitrate sample, returning violation to compliance, jlm 2/13/2020.
4004939	4004977	SOX	State Compliance achieved	20-APR-2017	State	ORC at appropriate level
4004937	4004976	SOX	State Compliance achieved	02-SEP-2014	State	System sampled in May 2014 9/2/14 ttj
4004932	4004920	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004921	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004922	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004923	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004924	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004925	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004926	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004927	SIF	State Public Notification received	06-JUN-2013	State	ccr
4004932	4004928	SIF	State Public Notification received	06-JUN-2013	State	ccr

1 - 50 of 134

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
FEYH REDRILLED WELL	13969	Yes	Well	Ground water	Emergency	Active
SNYDER WELL NO 2	1733	Yes	Well	Ground water	Permanent	Inactive
SNYDER 1R	17886	Yes	Well	Ground water	Permanent	Active
NORTH REDRILLED WELL	1734	Yes	Well	Ground water	Permanent	Active
SNYDER WELL 2R	1732	Yes	Well	Ground water	Emergency	Inactive
DOTY REDRILLED WELL	1735	Yes	Well	Ground water	Emergency	Active
DISTRIBUTION SYSTEM	6530	No	Distribution System/Zone	-	-	Active
BIG STORAGE TANK	1121	No	Storage	-	-	Active
LITTLE STORAGE TANK	13129	No	Storage	-	-	Active
CHLORINATOR FOR NORTH REDRILL WELL	13970	No	Treatment Plant	-	-	Active
CHLORINATOR FOR FEYH REDRILLED WELL	13971	No	Treatment Plant	-	-	Active
CHLORINATION FOR SNYDER 1R	17885	No	Treatment Plant	-	-	Active
CHLORINATOR FOR DOTY REDRILLED WELL	3489	No	Treatment Plant	-	-	Active
CHLORINATOR FOR SNYDER WELL 2R	20274	No	Treatment Plant	-	-	Inactive

1 - 14 of 14

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CHLORINATOR FOR NORTH REDRILL WELL	13970	Innovative	Disinfection
CHLORINATOR FOR NORTH REDRILL WELL	13970	Hypochlorination, Pre	Disinfection
CHLORINATOR FOR FEYH REDRILLED WELL	13971	Innovative	Disinfection
CHLORINATOR FOR FEYH REDRILLED WELL	13971	Hypochlorination, Pre	Disinfection
CHLORINATION FOR SNYDER 1R	17885	Innovative	Disinfection
CHLORINATION FOR SNYDER 1R	17885	Hypochlorination, Post	Disinfection
CHLORINATOR FOR SNYDER WELL 2R	20274	Hypochlorination, Post	Disinfection
CHLORINATOR FOR SNYDER WELL 2R	20274	Innovative	Disinfection
CHLORINATOR FOR DOTY REDRILLED WELL	3489	Innovative	Disinfection
CHLORINATOR FOR DOTY REDRILLED WELL	3489	Hypochlorination, Pre	Disinfection

1 - 10 of 10

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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