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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	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	39203	Returned to Compliance	01-DEC-2002	31-DEC-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	39103	Returned to Compliance	01-NOV-2002	30-NOV-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	39003	Returned to Compliance	01-OCT-2002	31-OCT-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38903	Returned to Compliance	01-SEP-2002	30-SEP-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38803	Returned to Compliance	01-AUG-2002	31-AUG-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38703	Returned to Compliance	01-JUL-2002	31-JUL-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38603	Returned to Compliance	01-JUN-2002	30-JUN-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38503	Returned to Compliance	01-MAY-2002	31-MAY-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38403	Returned to Compliance	01-APR-2002	30-APR-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38303	Returned to Compliance	01-MAR-2002	31-MAR-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38203	Returned to Compliance	01-FEB-2002	28-FEB-2002	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	38103	Returned to Compliance	01-JAN-2002	31-JAN-2002	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	192	Known	01-AUG-1992	31-AUG-1992	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
503	38103	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38203	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38303	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38403	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38503	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	39203	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38703	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38803	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38903	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	39003	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	39103	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002
503	38603	SOX	State Compliance achieved	16-MAY-2003	State	WEEK END MONITORING RESUMED AS OF DECEMBER 2002

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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
LAKE TAHOE INTAKE	473	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	1346	No	Distribution System/Zone	-	-	Active
TP BOOSTER PS	5571	No	Pump Facility	-	-	Active
LOWER CAVE ROCK BOOSTER	5572	No	Pump Facility	-	-	Active
UPPER CAVE ROCK BOOSTER	5573	No	Pump Facility	-	-	Active
HIDDEN WOODS BOOSTER	5574	No	Pump Facility	-	-	Active
INTAKE PUMPS	6307	No	Pump Facility	-	-	Active
UPPER CAVE ROCK STORAGE TANK 216K	3770	No	Storage	-	-	Active
LAKERIDGE STORAGE TANK 300K	3772	No	Storage	-	-	Active
HIDDEN WOODS STORAGE TANK 124K	3773	No	Storage	-	-	Active
SKYLAND STORAGE TANK 850K	3774	No	Storage	-	-	Active
LOWER CAVE ROCK STORAGE TANK 187K GAL	7617	No	Storage	-	-	Active
LOWER CAVE ROCK STORAGE TANK 56K	3771	No	Storage	-	-	Inactive
LAKERIDGE HYDRO TANK	5570	No	Storage	-	-	Inactive
LAKE TAHOE SURFACE WATER PLANT	833	No	Treatment Plant	-	-	Active
ARIA MOBILE TEMPORARY TREATMENT PLANT	9895	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
LAKE TAHOE SURFACE WATER PLANT	833	Hypochlorination, Post	Disinfection
LAKE TAHOE SURFACE WATER PLANT	833	Hypochlorination, Pre	Disinfection
LAKE TAHOE SURFACE WATER PLANT	833	Microscreening	Particulate removal
ARIA MOBILE TEMPORARY TREATMENT PLANT	9895	Microscreening	Particulate removal

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