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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
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1717	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1718	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Source Water (LT2)	Long Term 2 Enhanced Surface Water Treatment Rule	E. COLI	1714	Returned to Compliance	01-OCT-2017	31-OCT-2017	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1712	Returned to Compliance	01-JUL-2016	30-SEP-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1713	Returned to Compliance	01-JUL-2016	30-SEP-2016	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1711	Returned to Compliance	01-JAN-2016	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1708	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1709	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1707	Returned to Compliance	01-MAR-2007	31-MAR-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1607	Returned to Compliance	01-JUL-2006	30-SEP-2006	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
1233	1718	SOX	State Compliance achieved	09-NOV-2023	State	System collected next required routine monitoring in Oct lmf 12/5/2023
1233	1717	SOX	State Compliance achieved	09-NOV-2023	State	System collected next required routine monitoring in Oct lmf 12/5/2023
1222	1714	SOX	State Compliance achieved	10-MAY-2018	State	-
1218	1713	SIE	State Public Notification requested	09-NOV-2016	State	-
1218	1712	SIE	State Public Notification requested	09-NOV-2016	State	-
1216	1711	SOX	State Compliance achieved	26-SEP-2016	State	-
1211	1708	SIF	State Public Notification received	02-JUL-2008	State	-
1211	1709	SIF	State Public Notification received	02-JUL-2008	State	-
1207	1707	SOX	State Compliance achieved	20-JUN-2007	State	late tcr reporting
907	1607	SOX	State Compliance achieved	30-JAN-2007	State	Late reporting

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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
PURCHASED WATER FROM SILVERTHORNE	19079	Yes	Consecutive Connection	Ground water	Emergency	Active
STRAIGHT CREEK	544	Yes	Intake	Surface water	Permanent	Active
LASKY GULCH	543	Yes	Intake	Surface water	Permanent	Active
PURCHASED FROM DILLON VALLEY MD 159040	21752	Yes	Consecutive Connection	Surface water	Emergency	Active
DISTRIBUTION SYSTEM	7231	No	Distribution System/Zone	-	-	Active
COMBINED RAW SOURCE	14056	No	Sampling Station	-	-	Active
CORINTHIAN HILLS TANK	13327	No	Storage	-	-	Active
CR51 TANK	21746	No	Storage	-	-	Active
DILLON PLANT TANK	13326	No	Storage	-	-	Inactive
DILLON MEMBRANE SWTP01	4480	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
DILLON MEMBRANE SWTP01	4480	Gaseous Chlorination, Post	Disinfection
DILLON MEMBRANE SWTP01	4480	Fluoridation	Other
DILLON MEMBRANE SWTP01	4480	Innovative	Disinfection
DILLON MEMBRANE SWTP01	4480	Innovative	Corrosion control
DILLON MEMBRANE SWTP01	4480	Coagulation	Particulate removal
DILLON MEMBRANE SWTP01	4480	Innovative	Particulate removal
DILLON MEMBRANE SWTP01	4480	Innovative	Particulate removal
DILLON MEMBRANE SWTP01	4480	Innovative	Corrosion control

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