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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	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	4831303	Open	01-OCT-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	4735502	Returned to Compliance	01-JAN-2002	31-MAR-2002	No
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	2709094	Returned to Compliance	01-JUL-1994	30-SEP-1994	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	2619694	Returned to Compliance	01-APR-1994	30-JUN-1994	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	2534594	Returned to Compliance	01-JAN-1994	31-MAR-1994	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	2418394	Returned to Compliance	01-OCT-1993	31-DEC-1993	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	2402993	Returned to Compliance	01-JUL-1993	30-SEP-1993	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2456293	Returned to Compliance	01-JUL-1993	30-SEP-1993	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2456193	Returned to Compliance	01-APR-1993	30-JUN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	2479093	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	2478493	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	2478693	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	2478393	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	193	Returned to Compliance	01-JAN-1993	17-DEC-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	2478793	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2456093	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1880292	Known	01-FEB-1992	29-FEB-1992	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1842892	Known	01-JAN-1992	31-JAN-1992	No
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	1358190	Known	01-JUN-1987	30-JUN-1987	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	2006486	Known	14-JUL-1986	13-JUL-1987	Yes

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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
2315802	4735502	SIA	State Violation/Reminder Notice	13-AUG-2002	State	-
1086794	2619694	SOX	State Compliance achieved	04-JAN-1995	State	-
1099994	2709094	SOX	State Compliance achieved	04-JAN-1995	State	-
1086694	2534594	SOX	State Compliance achieved	04-JAN-1995	State	-
1086594	2418394	SOX	State Compliance achieved	04-JAN-1995	State	-
1126793	2402993	SOX	State Compliance achieved	04-JAN-1995	State	-
1045693	2478493	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2478693	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2478793	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2479093	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2478393	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2456293	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2456193	SOX	State Compliance achieved	05-OCT-1994	State	-
1045693	2456093	SOX	State Compliance achieved	05-OCT-1994	State	-
194	193	EOX	Federal Compliance achieved	17-DEC-1993	ODSWeb	-

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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
CATAWBA RIVER (S12101)	8617	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION	10022	No	Distribution System/Zone	-	-	Active
CHESTER METRO WATER PLNT (A12001)	7221	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
CHESTER METRO WATER PLNT (A12001)	7221	Activated Carbon, Powdered	Taste / odor control
CHESTER METRO WATER PLNT (A12001)	7221	pH Adjustment, Pre	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	Sedimentation	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	Rapid Mix	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	Flocculation	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	Filtration, Rapid Sand	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	Coagulation	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	Gaseous Chlorination, Pre	Disinfection
CHESTER METRO WATER PLNT (A12001)	7221	Gaseous Chlorination, Post	Disinfection
CHESTER METRO WATER PLNT (A12001)	7221	Inhibitor, Bimetallic Phospate	Corrosion control
CHESTER METRO WATER PLNT (A12001)	7221	Fluoridation	Other
CHESTER METRO WATER PLNT (A12001)	7221	Algae Control	Disinfection by-products control
CHESTER METRO WATER PLNT (A12001)	7221	Chlorine Dioxide	Disinfection by-products control
CHESTER METRO WATER PLNT (A12001)	7221	Chloramines	Disinfection
CHESTER METRO WATER PLNT (A12001)	7221	Sludge Treatment	Particulate removal
CHESTER METRO WATER PLNT (A12001)	7221	pH Adjustment, Pre	Iron removal

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