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PWS ID	CO0142600
PWS Name	MANCOS RURAL WATER COMPANY
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1300
County Served	Montezuma

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	4011515	Returned to Compliance	01-NOV-2025	30-NOV-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4011516	Returned to Compliance	01-NOV-2025	30-NOV-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	4011517	Returned to Compliance	01-OCT-2025	31-DEC-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4011519	Returned to Compliance	01-OCT-2025	31-DEC-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4011518	Returned to Compliance	01-OCT-2025	31-DEC-2025	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	4011512	Open	02-JUL-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	4011507	Returned to Compliance	01-JUL-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4011513	Returned to Compliance	01-JUL-2025	30-SEP-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4011514	Returned to Compliance	01-JUL-2025	30-SEP-2025	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	4011510	Returned to Compliance	01-JUN-2025	30-JUN-2025	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4011511	Returned to Compliance	01-JUN-2025	30-JUN-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4011508	Returned to Compliance	01-APR-2025	30-JUN-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4011509	Returned to Compliance	01-APR-2025	30-JUN-2025	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	4011506	Open	01-JAN-2025	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4011505	Returned to Compliance	01-NOV-2024	30-NOV-2024	No
Other	Public Notification Violation without NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	4011504	Open	13-FEB-2024	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4011502	Returned to Compliance	01-DEC-2023	31-DEC-2023	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	4011503	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4011497	Returned to Compliance	01-OCT-2019	31-DEC-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4011498	Returned to Compliance	01-OCT-2019	31-DEC-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4011495	Returned to Compliance	01-APR-2019	30-JUN-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4011496	Returned to Compliance	01-APR-2019	30-JUN-2019	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	4011493	Returned to Compliance	01-JAN-2019	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4011491	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	4011492	Returned to Compliance	01-OCT-2018	31-OCT-2018	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4011489	Returned to Compliance	01-SEP-2018	30-SEP-2018	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	4011490	Returned to Compliance	01-SEP-2018	30-SEP-2018	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	4011488	Returned to Compliance	01-OCT-2017	31-OCT-2017	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	4011484	Returned to Compliance	01-JUL-2010	-	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	4011472	Returned to Compliance	01-FEB-2009	28-FEB-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	4011483	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	4011481	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	4011477	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	4011475	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	4011474	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	4011473	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	4011482	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	4011476	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	4011480	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	4011478	Returned to Compliance	01-JAN-2009	31-DEC-2009	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	4011436	Returned to Compliance	01-JUL-2008	-	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	4011437	Returned to Compliance	01-APR-2008	-	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	4011438	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	4011439	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	4011458	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	4011457	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	4011456	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	4011455	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	4011454	Returned to Compliance	01-JAN-2008	31-DEC-2008	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	4011453	Returned to Compliance	01-JAN-2008	31-DEC-2008	No

1 - 50 of 91

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4037610	4011519	SIE	State Public Notification requested	06-FEB-2026	State	-
4037610	4011518	SIE	State Public Notification requested	06-FEB-2026	State	-
4037615	4011516	SOX	State Compliance achieved	29-JAN-2026	State	-
4037615	4011517	SOX	State Compliance achieved	29-JAN-2026	State	-
4037615	4011515	SOX	State Compliance achieved	29-JAN-2026	State	-
4037602	4011514	SIE	State Public Notification requested	07-NOV-2025	State	-
4037602	4011513	SIE	State Public Notification requested	07-NOV-2025	State	-
4037613	4011510	SOX	State Compliance achieved	10-OCT-2025	State	-
4037613	4011511	SOX	State Compliance achieved	10-OCT-2025	State	-
4037600	4011512	SIE	State Public Notification requested	12-SEP-2025	State	-
4037593	4011508	SIE	State Public Notification requested	07-AUG-2025	State	-
4037593	4011509	SIE	State Public Notification requested	07-AUG-2025	State	-
4037598	4011507	SOX	State Compliance achieved	04-AUG-2025	State	-
4037588	4011506	SIE	State Public Notification requested	05-FEB-2025	State	-
4037589	4011505	SOX	State Compliance achieved	06-JAN-2025	State	clean submittal
4037583	4011504	SIA	State Violation/Reminder Notice	29-FEB-2024	State	-
4037578	4011503	SIE	State Public Notification requested	25-JAN-2024	State	-
4037579	4011502	SOX	State Compliance achieved	24-JAN-2024	State	revision submitted BJK
4037568	4011495	SOX	State Compliance achieved	02-MAR-2020	State	-
4037568	4011498	SOX	State Compliance achieved	02-MAR-2020	State	-
4037568	4011497	SOX	State Compliance achieved	02-MAR-2020	State	-
4037568	4011496	SOX	State Compliance achieved	02-MAR-2020	State	-
4037564	4011493	SOX	State Compliance achieved	30-DEC-2019	State	-
4037556	4011489	SOX	State Compliance achieved	17-DEC-2018	State	RTC with next month's MOR. ejc
4037556	4011490	SOX	State Compliance achieved	17-DEC-2018	State	RTC with next month's MOR. ejc
4037556	4011492	SOX	State Compliance achieved	17-DEC-2018	State	RTC with next month's MOR. ejc
4037556	4011491	SOX	State Compliance achieved	17-DEC-2018	State	RTC with next month's MOR. ejc
4037550	4011488	SIE	State Public Notification requested	29-DEC-2017	State	-
4037547	4011484	SOX	State Compliance achieved	08-AUG-2011	State	-
4037548	4011409	SOX	State Compliance achieved	01-NOV-2010	State	RTC with samples collected in 2010. mnm 12/15/11
4037545	4011473	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011474	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011475	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011476	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011478	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011480	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011481	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011482	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011483	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011472	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037545	4011477	SIF	State Public Notification received	01-JUL-2010	State	PN included CCR. mnm
4037541	4011422	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011458	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011457	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011456	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011455	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011454	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011453	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011410	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09
4037541	4011411	SOX	State Compliance achieved	17-AUG-2009	State	Sampled for VOC on 7/22/09

1 - 50 of 91

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
JACKSON GULCH LAKE MANCOS	443	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	7040	No	Distribution System/Zone	-	-	Active
COMBINED RAW SOURCE	14039	No	Sampling Station	-	-	Active
HIGH RESERVOIR TANK	14475	No	Storage	-	-	Active
POINT LOOKOUT TANK	14476	No	Storage	-	-	Active
SHEEK TANK	14477	No	Storage	-	-	Active
BAFFLED CONTACT TANK	21689	No	Storage	-	-	Active
WEBBER CANYON TANK	14478	No	Storage	-	-	Inactive
MANCOS RURAL SWTP01	4230	No	Treatment Plant	-	-	Active

1 - 9 of 9

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MANCOS RURAL SWTP01	4230	Hypochlorination, Pre	Disinfection
MANCOS RURAL SWTP01	4230	Coagulation	Organics removal
MANCOS RURAL SWTP01	4230	Rapid Mix	Particulate removal
MANCOS RURAL SWTP01	4230	Flocculation	Particulate removal
MANCOS RURAL SWTP01	4230	Innovative	Particulate removal
MANCOS RURAL SWTP01	4230	Filtration, Rapid Sand	Particulate removal
MANCOS RURAL SWTP01	4230	Hypochlorination, Post	Disinfection
MANCOS RURAL SWTP01	4230	Innovative	Disinfection

1 - 8 of 8

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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