Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	055293401
PWS Name	LAC VIEUX DESERT
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	1740
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
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	1004666	Returned to Compliance	17-OCT-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1004665	Returned to Compliance	22-FEB-2020	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1004617	Returned to Compliance	01-APR-2019	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1004618	Returned to Compliance	01-APR-2019	30-JUN-2019	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1004614	Returned to Compliance	01-OCT-2018	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	1004615	Returned to Compliance	01-JAN-2018	31-DEC-2018	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1004613	Returned to Compliance	01-JUL-2017	-	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	1004628	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	1004631	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	1004630	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	1004627	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	1004622	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	1004629	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	1004626	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	1004625	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	1004624	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	1004623	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	1004621	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	1004620	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	1004619	Returned to Compliance	01-JAN-2017	31-DEC-2019	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1004609	Returned to Compliance	01-JAN-2016	31-JAN-2016	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	1004607	Returned to Compliance	01-SEP-2012	30-SEP-2012	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1004606	Returned to Compliance	01-APR-2011	30-APR-2011	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	1004611	Returned to Compliance	01-JAN-2008	31-DEC-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	1004610	Returned to Compliance	01-JAN-2008	31-DEC-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	1004612	Returned to Compliance	01-JAN-2008	31-DEC-2016	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	1004407	Returned to Compliance	01-APR-2007	30-APR-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1004507	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1004105	Returned to Compliance	01-MAY-2005	31-MAY-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1004605	Known	01-APR-2005	30-JUN-2005	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	798	Known	01-OCT-1997	31-OCT-1997	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	596	Known	01-NOV-1995	30-NOV-1995	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	494	Known	01-AUG-1994	31-AUG-1994	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	394	Known	01-JUL-1994	31-JUL-1994	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	294	Known	01-MAR-1994	31-MAR-1994	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	194	Known	01-FEB-1994	28-FEB-1994	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	193	Known	01-AUG-1993	31-AUG-1993	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	293	Known	01-JUL-1993	31-JUL-1993	Yes
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	896	Returned to Compliance	01-JAN-1993	31-DEC-1996	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	492	Returned to Compliance	01-NOV-1991	30-NOV-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	192	Returned to Compliance	01-AUG-1991	31-AUG-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	292	Returned to Compliance	01-JUL-1991	31-JUL-1991	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	291	Returned to Compliance	01-MAY-1991	31-MAY-1991	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
2443	1004666	EIF	Federal Public Notification received from PWS	26-JUN-2025	Region	-
2438	1004665	EOX	Federal Compliance achieved	18-AUG-2021	Region	-
2434	1004618	EIF	Federal Public Notification received from PWS	26-JUN-2020	Region	-
2434	1004617	EIF	Federal Public Notification received from PWS	26-JUN-2020	Region	-
2432	1004627	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004628	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004629	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004631	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004630	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004619	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004620	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004621	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004622	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004623	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004626	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004625	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2432	1004624	EOX	Federal Compliance achieved	11-MAR-2020	Region	-
2427	1004615	EOX	Federal Compliance achieved	08-AUG-2019	Region	-
2426	1004614	EIF	Federal Public Notification received from PWS	27-JUN-2019	Region	-
2414	1004613	EOX	Federal Compliance achieved	27-APR-2018	Region	-
2412	1004611	EOX	Federal Compliance achieved	26-JAN-2017	Region	-
2412	1004610	EOX	Federal Compliance achieved	26-JAN-2017	Region	-
2412	1004612	EOX	Federal Compliance achieved	26-JAN-2017	Region	-
2411	1004609	EOX	Federal Compliance achieved	16-FEB-2016	Region	-
2410	1004607	EOX	Federal Compliance achieved	02-OCT-2012	Region	-
2409	1004606	EOX	Federal Compliance achieved	11-MAY-2011	Region	-
2407	1004507	EOX	Federal Compliance achieved	30-SEP-2007	Region	-
2307	1004407	EOX	Federal Compliance achieved	31-MAY-2007	Region	-
1605	1004105	EOX	Federal Compliance achieved	30-JUN-2005	Region	-
198	798	EIF	Federal Public Notification received from PWS	10-OCT-1997	Region	LS
696	896	EOX	Federal Compliance achieved	01-JUL-1997	Region	DB
396	596	EIF	Federal Public Notification received from PWS	25-JAN-1996	Region	LS
694	394	EIF	Federal Public Notification received from PWS	26-AUG-1994	Region	LS
394	294	EIA	Federal Violation/Reminder Notice	11-MAY-1994	Region	LS
594	194	EIA	Federal Violation/Reminder Notice	08-APR-1994	Region	LS
1192	291	EOX	Federal Compliance achieved	01-JUN-1992	Region	BM
1192	292	EOX	Federal Compliance achieved	01-JUN-1992	Region	BM
1192	492	EOX	Federal Compliance achieved	01-JUN-1992	Region	BM
1192	192	EOX	Federal Compliance achieved	01-JUN-1992	Region	BM

1 - 39 of 39

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WATERSMEET WL#1	1203	Yes	Well	Ground water	Permanent	Active
WATERSMEET WL#2	1204	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	687	No	Distribution System/Zone	-	-	Active
SAMPLING SITE # 1	1735	No	Sampling Station	-	-	Active
SAMPLING SITE # 2	1736	No	Sampling Station	-	-	Active
ENTRY POINT #1	685	No	Sampling Station	-	-	Active
TREATMENT PLANT #1	55	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT #1	55	Hypochlorination, Post	Disinfection

1 - 1 of 1

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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