Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	084690480
PWS Name	OGLALA RWS PIPELINE
PWS Type	Community water system
Owner Type	Federal government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	3562
County Served

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.

Violations

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, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9603	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	9600	Returned to Compliance	01-JAN-2020	-	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	298	Known	01-AUG-1998	31-AUG-1998	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	598	Known	01-SEP-1997	30-SEP-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	397	Known	01-MAY-1997	31-MAY-1997	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	297	Known	01-APR-1997	30-APR-1997	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	197	Known	01-APR-1997	30-APR-1997	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	697	Known	01-SEP-1996	30-SEP-1996	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	797	Known	01-SEP-1996	30-SEP-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	597	Known	01-AUG-1996	31-AUG-1996	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	497	Known	01-AUG-1996	31-AUG-1996	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	396	Known	01-DEC-1995	31-DEC-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	296	Known	01-NOV-1995	30-NOV-1995	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	196	Known	01-NOV-1995	30-NOV-1995	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9595	Known	01-SEP-1995	30-SEP-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9596	Known	01-SEP-1995	30-SEP-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9496	Known	01-AUG-1995	31-AUG-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9495	Known	01-AUG-1995	31-AUG-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	294	Known	01-SEP-1994	30-SEP-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	295	Known	01-SEP-1994	30-SEP-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	194	Known	01-AUG-1994	31-AUG-1994	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	195	Known	01-AUG-1994	31-AUG-1994	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	1495	Known	01-JAN-1994	31-DEC-1994	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1293	Known	01-JUN-1993	30-JUN-1993	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1093	Known	01-FEB-1993	28-FEB-1993	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	993	Known	01-NOV-1992	30-NOV-1992	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	893	Known	01-SEP-1992	30-SEP-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	892	Known	01-SEP-1992	30-SEP-1992	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	793	Known	01-SEP-1992	30-SEP-1992	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	792	Known	01-SEP-1992	30-SEP-1992	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	692	Known	01-AUG-1992	31-AUG-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	592	Known	01-AUG-1992	31-AUG-1992	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	593	Known	01-AUG-1992	31-AUG-1992	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	693	Known	01-AUG-1992	31-AUG-1992	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	392	Known	01-JUL-1992	31-JUL-1992	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	292	Known	01-JUN-1992	30-JUN-1992	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	192	Known	01-JUN-1992	30-JUN-1992	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	2V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	3V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	5V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	1V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	4V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	9V86	Known	01-JAN-1983	31-DEC-1985	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	7V86	Known	01-JAN-1983	31-DEC-1985	No
MCL	Maximum Contaminant Level Violation, Average	Inorganic Chemicals	Selenium	1V82	Known	30-SEP-1982	29-SEP-1983	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	12486	Known	01-JAN-1982	31-DEC-1985	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1608680	Known	01-JUL-1976	30-JUN-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	1608580	Known	01-JUL-1976	30-JUN-1980	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
13	9603	SOX	State Compliance achieved	26-FEB-2025	Region	-
4	9600	SOX	State Compliance achieved	20-OCT-2020	Region	-
1E82	1V82	SIA	State Violation/Reminder Notice	30-SEP-1982	Region	-

1 - 3 of 3

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL #4B (INACTIVE)	10978	Yes	Well	Ground water	Other	Inactive
WELL #7C	10982	Yes	Well	Ground water	Permanent	Active
WELL #5	10981	Yes	Well	Ground water	Permanent	Active
WELL #2C	10980	Yes	Well	Ground water	Permanent	Active
WELL #2D	10979	Yes	Well	Ground water	Permanent	Active
WELL #4 (MAIN WELL)	10845	Yes	Well	Ground water	Permanent	Active
OGLALA RWS PIPELINE	11141	No	Distribution System/Zone	-	-	Active
GRASS CREEK BOOSTER STATION	12125	No	Other	-	-	Active
OGLALA RWS PIPELINE	11269	No	Other	-	-	Inactive
NW HOUSING STANDPIPE 130K GAL	11804	No	Storage	-	-	Active
LONEMAN STORAGE TANK 75K GAL	11805	No	Storage	-	-	Active
STORAGE TANK 80K GAL	11806	No	Storage	-	-	Active
STORAGE TANK 190K GAL	11807	No	Storage	-	-	Active
GRASS CREEK STORAGE TANK 10K GAL	12120	No	Storage	-	-	Active
TREATMENT PLANT	11460	No	Treatment Plant	-	-	Active

1 - 15 of 15

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	11460	Fluoridation	Other
TREATMENT PLANT	11460	Chloramines	Disinfection

1 - 2 of 2

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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