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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
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2000130	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2000129	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1900128	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1900127	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1600126	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	1100125	Returned to Compliance	01-FEB-2011	-	Yes
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	1000124	Returned to Compliance	01-FEB-2010	-	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	1000123	Returned to Compliance	02-JAN-2010	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0900122	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0900121	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800114	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800113	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	0800118	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	0800117	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	0800115	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	0800120	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	0800116	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	0800119	Returned to Compliance	01-APR-2008	30-JUN-2008	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800112	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800111	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0700110	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Pentachlorophenol	0700109	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Pentachlorophenol	0700108	Returned to Compliance	01-OCT-2006	31-DEC-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Pentachlorophenol	0600107	Returned to Compliance	01-JUL-2006	30-SEP-2006	Yes
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Pentachlorophenol	0600106	Returned to Compliance	01-APR-2006	30-JUN-2006	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	0400105	Returned to Compliance	01-JAN-2004	30-MAR-2004	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9700104	Returned to Compliance	01-FEB-1997	28-FEB-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9400103	Returned to Compliance	01-MAR-1994	31-MAR-1994	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9300102	Returned to Compliance	01-APR-1993	30-JUN-1993	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9300101	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	8016018	Known	01-JUL-1976	30-JUN-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8016017	Known	01-JUL-1976	30-JUN-1980	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
1900083	1900127	SOX	State Compliance achieved	18-JUN-2020	State	-
1900084	1900128	SOX	State Compliance achieved	18-JUN-2020	State	-
2000085	2000129	SOX	State Compliance achieved	18-JUN-2020	State	-
2000086	2000130	SOX	State Compliance achieved	18-JUN-2020	State	-
1600075	1600126	SOX	State Compliance achieved	27-JUL-2016	State	-
1100072	1100125	SOX	State Compliance achieved	15-APR-2011	State	-
1000070	1000123	SIF	State Public Notification received	02-FEB-2011	State	-
1000068	1000124	SOX	State Compliance achieved	19-APR-2010	State	-
0800063	0800114	SOX	State Compliance achieved	01-JUL-2009	State	-
0900064	0900121	SOX	State Compliance achieved	01-JUL-2009	State	-
0900065	0900122	SOX	State Compliance achieved	01-JUL-2009	State	-
0700059	0700110	SOX	State Compliance achieved	01-JUL-2009	State	-
0800060	0800111	SOX	State Compliance achieved	01-JUL-2009	State	-
0800062	0800113	SOX	State Compliance achieved	01-JUL-2009	State	-
0800061	0800112	SOX	State Compliance achieved	01-JUL-2009	State	-
0800049	0800120	SOX	State Compliance achieved	12-NOV-2008	State	-
0800047	0800118	SOX	State Compliance achieved	12-NOV-2008	State	-
0800046	0800117	SOX	State Compliance achieved	12-NOV-2008	State	-
0800045	0800116	SOX	State Compliance achieved	12-NOV-2008	State	-
0800044	0800115	SOX	State Compliance achieved	12-NOV-2008	State	-
0800048	0800119	SOX	State Compliance achieved	12-NOV-2008	State	-
0600026	0600107	SOX	State Compliance achieved	18-JUN-2007	State	-
0600025	0600106	SOX	State Compliance achieved	18-JUN-2007	State	-
0700027	0700108	SOX	State Compliance achieved	18-JUN-2007	State	-
0700028	0700109	SOX	State Compliance achieved	18-JUN-2007	State	-
0400017	0400105	SIF	State Public Notification received	06-MAY-2004	State	-
9700011	9700104	SIE	State Public Notification requested	26-MAR-1997	State	-
9400009	9400103	SIF	State Public Notification received	25-APR-1994	State	-
9300006	9300102	SOX	State Compliance achieved	09-AUG-1993	State	-
9300006	9300101	SOX	State Compliance achieved	09-AUG-1993	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
MISSOURI RIVER	001	Yes	Intake	Surface water	Other	Inactive
COLLECTOR WELL	010	Yes	Well	Ground water	Permanent	Active
NEBRASKA #2	009	Yes	Well	Ground water	Emergency	Inactive
NEBRASKA #1	008	Yes	Well	Ground water	Emergency	Inactive
1 ES 1MG	002	No	Storage	-	-	Active
2.3 MG GROUND STORAGE	003	No	Storage	-	-	Active
1 ES 1 MG	007	No	Storage	-	-	Active
RO GROUNDWATER PLANT	011	No	Treatment Plant	-	-	Active
PUMP STATION/ENTRY POINT	012	No	Treatment Plant	-	-	Active
NEBRASKA TREATMENT PLANT	004	No	Treatment Plant	-	-	Inactive
OLD TREATMENT PLANT	006	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
NEBRASKA TREATMENT PLANT	004	Hypochlorination, Post	Disinfection
NEBRASKA TREATMENT PLANT	004	Fluoridation	Other
NEBRASKA TREATMENT PLANT	004	Filtration, Greensand	Iron removal
NEBRASKA TREATMENT PLANT	004	Inhibitor, Polyphosphate	Corrosion control
NEBRASKA TREATMENT PLANT	004	Lime - Soda Ash Addition	Softening (hardness removal)
NEBRASKA TREATMENT PLANT	004	Activated Carbon, Powdered	Taste / odor control
NEBRASKA TREATMENT PLANT	004	pH Adjustment	Softening (hardness removal)
NEBRASKA TREATMENT PLANT	004	Coagulation	Particulate removal
NEBRASKA TREATMENT PLANT	004	Rapid Mix	Particulate removal
NEBRASKA TREATMENT PLANT	004	Sedimentation	Particulate removal
OLD TREATMENT PLANT	006	Gaseous Chlorination, Post	Disinfection
OLD TREATMENT PLANT	006	Filtered	Particulate removal
OLD TREATMENT PLANT	006	Coagulation	Softening (hardness removal)
OLD TREATMENT PLANT	006	Lime - Soda Ash Addition	Softening (hardness removal)
OLD TREATMENT PLANT	006	Fluoridation	Other
OLD TREATMENT PLANT	006	Inhibitor, Polyphosphate	Corrosion control
RO GROUNDWATER PLANT	011	Hypochlorination, Post	Disinfection
RO GROUNDWATER PLANT	011	Fluoridation	Other
RO GROUNDWATER PLANT	011	Reverse Osmosis	Softening (hardness removal)
RO GROUNDWATER PLANT	011	Filtration, Cartridge	Particulate removal
RO GROUNDWATER PLANT	011	Filtered	Particulate removal
RO GROUNDWATER PLANT	011	Aeration, Cascade	Iron removal
RO GROUNDWATER PLANT	011	Sedimentation	Particulate removal
RO GROUNDWATER PLANT	011	pH Adjustment, Post	Corrosion control
RO GROUNDWATER PLANT	011	Inhibitor, Polyphosphate	Corrosion control
RO GROUNDWATER PLANT	011	Coagulation	Particulate removal
PUMP STATION/ENTRY POINT	012	Fluoridation	Other

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