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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	2300107	Returned to Compliance	01-OCT-2023	-	No
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	2200106	Returned to Compliance	27-JUL-2022	-	Yes
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	1800105	Returned to Compliance	08-JAN-2018	-	Yes
Other	Failure to Notify Other PWS	Ground Water Rule	Groundwater Rule	1100102	Returned to Compliance	04-AUG-2011	-	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	1100103	Returned to Compliance	01-AUG-2011	31-AUG-2011	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1100104	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	1000101	Returned to Compliance	01-FEB-2010	-	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9300100	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8015517	Known	01-JUL-1976	30-JUN-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	8015518	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
2300018	2300107	SOX	State Compliance achieved	24-SEP-2024	State	-
2200017	2200106	SOX	State Compliance achieved	08-FEB-2024	State	-
1800014	1800105	SOX	State Compliance achieved	09-AUG-2018	State	-
1100010	1100104	SOX	State Compliance achieved	10-JAN-2012	State	-
1100011	1100103	SOX	State Compliance achieved	01-OCT-2011	State	-
1100006	1100102	SOX	State Compliance achieved	29-AUG-2011	State	-
1000004	1000101	SOX	State Compliance achieved	19-FEB-2010	State	-
9300002	9300100	SOX	State Compliance achieved	07-FEB-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
BIG SIOUX RWS	007	Yes	Consecutive Connection	Ground water	Permanent	Active
#3	010	Yes	Well	Ground water	Other	Inactive
#2	009	Yes	Well	Ground water	Other	Inactive
#1	008	Yes	Well	Ground water	Other	Inactive
ENTRY PT-#1 & #2	006	No	Other	-	-	Inactive
1 ES 100000	004	No	Storage	-	-	Active
1 ES 250000	005	No	Storage	-	-	Active
TREAT SITE - #1	001	No	Treatment Plant	-	-	Inactive
TREAT SITE - #2	002	No	Treatment Plant	-	-	Inactive
TREAT SITE - #3	003	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TREAT SITE - #1	001	Gaseous Chlorination, Post	Disinfection
TREAT SITE - #1	001	Fluoridation	Other
TREAT SITE - #1	001	Inhibitor, Polyphosphate	Corrosion control
TREAT SITE - #2	002	Gaseous Chlorination, Post	Disinfection
TREAT SITE - #2	002	Fluoridation	Other
TREAT SITE - #3	003	Gaseous Chlorination, Post	Disinfection
TREAT SITE - #3	003	Fluoridation	Other
TREAT SITE - #3	003	Inhibitor, Polyphosphate	Corrosion control

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