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PWS ID	NV0000356
PWS Name	GLENBROOK WATER COOPERATIVE INC
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1000
County Served	Douglas

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
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	52846	Returned to Compliance	17-OCT-2024	-	Yes
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	52845	Returned to Compliance	17-OCT-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	52841	Returned to Compliance	01-DEC-2020	28-FEB-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	52842	Returned to Compliance	01-DEC-2020	28-FEB-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Bromate	52832	Returned to Compliance	01-JAN-2014	31-MAR-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Bromate	52831	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	52829	Returned to Compliance	01-JAN-2013	31-MAR-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	52828	Returned to Compliance	01-JAN-2013	31-MAR-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	52827	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	52826	Returned to Compliance	01-OCT-2012	31-DEC-2012	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52822	Returned to Compliance	01-OCT-2010	31-OCT-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52821	Returned to Compliance	01-SEP-2010	30-SEP-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52820	Returned to Compliance	01-AUG-2010	31-AUG-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52819	Returned to Compliance	01-JUL-2010	31-JUL-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52818	Returned to Compliance	01-JUN-2010	30-JUN-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52817	Returned to Compliance	01-APR-2010	30-APR-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52816	Returned to Compliance	01-MAR-2010	31-MAR-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52815	Returned to Compliance	01-FEB-2010	28-FEB-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52812	Returned to Compliance	01-JAN-2010	31-JAN-2010	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52814	Returned to Compliance	01-DEC-2009	31-DEC-2009	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	52813	Returned to Compliance	01-NOV-2009	30-NOV-2009	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	52810	Returned to Compliance	01-JUL-2009	-	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	48108	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	50908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	48308	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	48008	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	48208	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	48708	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	47808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	47708	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	47608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	48608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	48508	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	50608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	48808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	47908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	48908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	50708	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	49008	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	49108	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	49208	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	49308	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	49408	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	49508	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	49608	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	49808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	49908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	50808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	50008	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	50108	Returned to Compliance	01-JAN-2007	31-DEC-2007	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
125277	52846	SOX	State Compliance achieved	28-MAY-2025	State	-
125278	52845	SOX	State Compliance achieved	21-NOV-2024	State	-
125266	52842	SOX	State Compliance achieved	01-AUG-2023	State	-
125266	52841	SOX	State Compliance achieved	01-AUG-2023	State	-
125251	52832	SOX	State Compliance achieved	11-MAR-2015	State	-
125252	52831	SOX	State Compliance achieved	11-MAR-2015	State	-
125236	52828	SOX	State Compliance achieved	25-FEB-2014	State	4 QTRS OF SAMPLES TAKEN AT APPROVED LOCATION.
125236	52829	SOX	State Compliance achieved	25-FEB-2014	State	4 QTRS OF SAMPLES TAKEN AT APPROVED LOCATION.
125231	52826	SOX	State Compliance achieved	12-AUG-2013	State	SAMPLE TAKEN AT CORRECT LOCATION
125231	52827	SOX	State Compliance achieved	12-AUG-2013	State	SAMPLE TAKEN AT CORRECT LOCATION
125219	52815	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52814	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52813	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52812	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52817	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52816	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52818	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52819	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52820	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52821	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125219	52822	SOX	State Compliance achieved	20-DEC-2010	State	6 WEEKS OF CORRECT MONITORING.
125224	52810	SOX	State Compliance achieved	28-JUN-2010	State	-
125216	49808	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49908	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50108	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50208	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50308	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50408	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50508	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50608	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50708	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50808	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	50908	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49708	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49608	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49508	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49408	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49308	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49208	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49108	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	49008	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48908	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48808	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48708	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48608	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48508	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48408	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48308	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48208	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.
125216	48108	SOX	State Compliance achieved	30-DEC-2008	State	SAMPLED MAY 23, 2008 FOR MBAS, VOC, DIOXIN, SOC, IOC.

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LAKE TAHOE INTAKE	502	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	1383	No	Distribution System/Zone	-	-	Active
RAW WATER PUMPS	10388	No	Pump Facility	-	-	Active
FINISHED WATER PUMPS	6000	No	Pump Facility	-	-	Active
STORAGE TANK 500K	4353	No	Storage	-	-	Active
LAKE TAHOE SURFACE WATER PLANT	8025	No	Treatment Plant	-	-	Active
LAKE TAHOE SURFACE WATER PLANT	841	No	Treatment Plant	-	-	Inactive

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
LAKE TAHOE SURFACE WATER PLANT	8025	Hypochlorination, Post	Disinfection
LAKE TAHOE SURFACE WATER PLANT	8025	Reducing Agents	De-chlorination
LAKE TAHOE SURFACE WATER PLANT	8025	4-Log Treatment of Viruses	Disinfection
LAKE TAHOE SURFACE WATER PLANT	8025	Ozonation, Pre	Disinfection
LAKE TAHOE SURFACE WATER PLANT	8025	3-Log Remove/Inactivate G Lamblia	Disinfection
LAKE TAHOE SURFACE WATER PLANT	8025	3-Log Treatment of Crypto	Disinfection
LAKE TAHOE SURFACE WATER PLANT	8025	Ultraviolet Radiation	Disinfection
LAKE TAHOE SURFACE WATER PLANT	841	Ozonation, Pre	Disinfection
LAKE TAHOE SURFACE WATER PLANT	841	Ultraviolet Radiation	Disinfection
LAKE TAHOE SURFACE WATER PLANT	841	Hypochlorination, Post	Disinfection

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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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