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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
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	4030507	Open	02-JUL-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	4030505	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4030504	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	4030502	Returned to Compliance	01-OCT-2013	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4030501	Returned to Compliance	01-JUN-2001	30-JUN-2001	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	2851295	Known	01-OCT-1994	31-OCT-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2856595	Returned to Compliance	01-OCT-1994	31-OCT-1994	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1916492	Known	01-FEB-1992	29-FEB-1992	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
2505012	4030507	SIE	State Public Notification requested	15-DEC-2025	State	-
2505010	4030504	SOX	State Compliance achieved	15-NOV-2023	State	-
2505010	4030505	SOX	State Compliance achieved	15-NOV-2023	State	-
2505005	4030502	SOX	State Compliance achieved	10-JUN-2021	State	ALL REQUIRED COMPLIANCE TAP SAMPLES COLLECTED AND ANALYZED
2505001	4030501	SOX	State Compliance achieved	01-DEC-2001	State	-
1141595	2856595	SOX	State Compliance achieved	10-MAY-1995	State	-
1028395	2851295	SIF	State Public Notification received	01-DEC-1994	State	-

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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
3710003 WESTMINSTER CITY OF (P37103)	9127	Yes	Consecutive Connection	Surface water	Emergency	Inactive
LAKE HARTWELL (S37109)	18006	Yes	Intake	Surface water	Permanent	Active
3710002 SENECA CITY OF (P37104)	9128	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION	10685	No	Distribution System/Zone	-	-	Active
LAKE HARTWELL WTP (A37017)	18007	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
LAKE HARTWELL WTP (A37017)	18007	pH Adjustment, Post	Corrosion control
LAKE HARTWELL WTP (A37017)	18007	Hypochlorination, Post	Disinfection
LAKE HARTWELL WTP (A37017)	18007	Hypochlorination, Pre	Disinfection
LAKE HARTWELL WTP (A37017)	18007	Coagulation	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	Filtration, Ultrafiltration	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	Flocculation	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	Rapid Mix	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	Sedimentation	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	Sludge Treatment	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	pH Adjustment, Pre	Particulate removal
LAKE HARTWELL WTP (A37017)	18007	Fluoridation	Other
LAKE HARTWELL WTP (A37017)	18007	Inhibitor, Orthophosphate	Corrosion control
LAKE HARTWELL WTP (A37017)	18007	Activated Carbon, Powdered	Taste / odor control
LAKE HARTWELL WTP (A37017)	18007	Peroxide	Taste / odor control
LAKE HARTWELL WTP (A37017)	18007	Algae Control	Taste / odor control

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