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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	7497513	Returned to Compliance	01-OCT-2021	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7497514	Returned to Compliance	01-OCT-2021	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7497511	Returned to Compliance	01-JUL-2021	30-SEP-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7497512	Returned to Compliance	01-JUL-2021	30-SEP-2021	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	7497305	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	7497204	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	7497104	Returned to Compliance	01-JUL-2004	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	5943103	Returned to Compliance	01-APR-2003	30-JUN-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	5751003	Returned to Compliance	01-JAN-2003	31-MAR-2003	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	5478403	Returned to Compliance	01-OCT-2002	31-DEC-2002	Yes
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Atrazine	2443497	Returned to Compliance	01-JUL-1997	30-SEP-1997	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8506677	Returned to Compliance	01-OCT-1984	30-SEP-1988	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
8081414	7497514	SIF	State Public Notification received	07-JUN-2022	State	-
8081414	7497513	SIF	State Public Notification received	07-JUN-2022	State	-
8081415	7497512	SIF	State Public Notification received	07-JUN-2022	State	-
8081415	7497511	SIF	State Public Notification received	07-JUN-2022	State	-
8081407	7497104	SOX	State Compliance achieved	26-JUN-2007	State	-
2031805	7497305	SIF	State Public Notification received	18-MAR-2005	State	-
8022405	7497204	SOX	State Compliance achieved	24-FEB-2005	State	-
8081303	5478403	SOX	State Compliance achieved	13-AUG-2003	State	-
8081303	5943103	SOX	State Compliance achieved	13-AUG-2003	State	-
8081303	5751003	SOX	State Compliance achieved	13-AUG-2003	State	-
498	2443497	SIF	State Public Notification received	22-DEC-1997	State	-
85E0002	8506677	SOX	State Compliance achieved	30-SEP-1985	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
CONSECUTIVE CONNECTION NORW	43741	Yes	Consecutive Connection	Surface water	Emergency	Active
LOWER RESERVOIR	34923	Yes	Reservoir	Surface water	Permanent	Active
MEMORIAL RESERVOIR	34922	Yes	Reservoir	Surface water	Permanent	Active
UPPER RESERVOIR	34921	Yes	Reservoir	Surface water	Permanent	Active
INTAKE E BRANCH HURON RIVER	43743	Yes	Intake	Surface water	Permanent	Active
UPPER RESERVOIR SPILLWAY	35923	Yes	Intake	Surface water	Permanent	Active
LOWER RESERVOIR INTAKE 1	35921	Yes	Intake	Surface water	Permanent	Active
LOWER RESERVOIR INTAKE 2	21658	Yes	Intake	Surface water	Permanent	Active
MEMORIAL RESERVOIR INTAKE	21657	Yes	Intake	Surface water	Permanent	Active
HURON RIVER INTAKE	21656	Yes	Intake	Surface water	Permanent	Active
EAST CLEARWELL	34924	No	Clear Well	-	-	Inactive
WEST CLEARWELL	34925	No	Clear Well	-	-	Inactive
NORWALK CITY DISTRIBUTION SYSTEM	26001	No	Distribution System/Zone	-	-	Active
NORWALK CLEARWELL OT	47670	No	Other	-	-	Active
SOUTH DS PUMPING STATION	22553	No	Pump Facility	-	-	Active
W MAIN ST DS PUMPING STATION	22554	No	Pump Facility	-	-	Active
LOWER RESERVOIR TRANSFER PUMP	34916	No	Pump Facility	-	-	Active
MEMORIAL RESERVOIR TRANSFER PUMPS	34917	No	Pump Facility	-	-	Active
LOW SERVICE PUMPS	34919	No	Pump Facility	-	-	Active
HIGH SERVICE PUMPS	34920	No	Pump Facility	-	-	Active
INTAKE PUMPS E BRANCH HURON RIVER	43742	No	Pump Facility	-	-	Active
RESERVOIR TRANSFER PUMP #2	34918	No	Pump Facility	-	-	Inactive
Norwalk, City Of P01	93523	No	Sampling Station	-	-	Inactive
CHESTNUT ELEVATED TANK	429	No	Storage	-	-	Active
SOUTH ELEVATED TANK	430	No	Storage	-	-	Active
WASHWATER ELEVATED TANK	43734	No	Storage	-	-	Active
EAST CLEARWELL	46185	No	Storage	-	-	Active
WEST CLEARWELL	46406	No	Storage	-	-	Active
REACTION TANK	43735	No	Storage	-	-	Inactive
NORWALK CITY	4262	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
NORWALK CITY	4262	Permanganate	Disinfection by-products control
NORWALK CITY	4262	Activated Carbon, Powdered	Organics removal
NORWALK CITY	4262	Innovative	Organics removal
NORWALK CITY	4262	Coagulation	Particulate removal
NORWALK CITY	4262	pH Adjustment, Post	Corrosion control
NORWALK CITY	4262	Coagulation	Particulate removal
NORWALK CITY	4262	Innovative	Particulate removal
NORWALK CITY	4262	Sludge Treatment	Particulate removal
NORWALK CITY	4262	Filtration, Rapid Sand	Particulate removal
NORWALK CITY	4262	Fluoridation	Other
NORWALK CITY	4262	Algae Control	Taste / odor control
NORWALK CITY	4262	Hypochlorination, Post	Disinfection
NORWALK CITY	4262	Inhibitor, Orthophosphate	Corrosion control

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