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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
MON	Monitoring, Lab Certification/Method Error (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	9511003	Returned to Compliance	01-APR-2025	31-MAY-2025	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	511005	Returned to Compliance	01-JUL-2005	31-JUL-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	511004	Returned to Compliance	01-JUN-2005	30-JUN-2005	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9511002	Returned to Compliance	01-MAR-1995	31-MAR-1995	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	9511001	Returned to Compliance	01-FEB-1995	28-FEB-1995	Yes
Other	Notification, Public	Miscellaneous Other Rules	-	8010227	Known	28-JUL-1980	27-AUG-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
9911010	9511003	SOX	State Compliance achieved	15-SEP-2025	State	-
611008	511004	SIA	State Violation/Reminder Notice	23-SEP-2005	State	ENF_NO:03-11-05E-087; MR3 JUN/JUL 2005 INCORRECT # OF ROU'S COLLECTED
611008	511005	SIA	State Violation/Reminder Notice	23-SEP-2005	State	ENF_NO:03-11-05E-087; MR3 JUN/JUL 2005 INCORRECT # OF ROU'S COLLECTED
9511005	9511002	SOX	State Compliance achieved	17-APR-1995	State	ENF_NO:03-11-95C-009; 3/95 NTU STD PN M2
9511003	9511001	SOX	State Compliance achieved	06-APR-1995	State	ENF_NO:03-11-95C-007;

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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
LIME KILN SOURCE - ABANDONED	33950	Yes	Intake	Surface water	Other	Inactive
MONO VILLAGE WELL 7	58701	Yes	Well	Ground water	Permanent	Active
MILL VILLA WELL - RAW	24512	Yes	Well	Ground water	Permanent	Active
RYBAR WELL 4 - INACTIVE	58711	Yes	Well	Ground water	Other	Inactive
RYBAR WELL 3 RAW INAC	58710	Yes	Well	Ground water	Other	Inactive
MONO VILLAGE WELL 2 -INAC	58700	Yes	Well	Ground water	Other	Inactive
CUESTA SERENA WELL 02 - INACTIVE	23649	Yes	Well	Ground water	Other	Inactive
CUESTA SERENA WELL 01 - INACTIVE	23648	Yes	Well	Ground water	Other	Inactive
RYBAR WELL 2 RAW - STBY	58708	Yes	Well	Ground water	Emergency	Active
RYBAR WELL 1 RAW - STBY	58707	Yes	Well	Ground water	Emergency	Active
CUESTA CENTER WELL 1 RAW - STBY	58706	Yes	Well	Ground water	Emergency	Active
LAMBERT LAKE WELL 1 RAW - STBY	58705	Yes	Well	Ground water	Emergency	Active
LIME KILN SOURCE - INACTIVE	CA5510001002	Yes	Reservoir	Surface water	Other	Inactive
SHAWS FLAT DITCH - RAW	33951	Yes	Intake	Surface water	Permanent	Active
MONO VILLAGE PHOENIX DITCH - INACTIVE	58697	Yes	Intake	Surface water	Other	Inactive
DISTRIBUTION SYSTEM	33949	No	Distribution System/Zone	-	-	Active
GREENLEY WTP - TREATED	4125	No	Treatment Plant	-	-	Active
SONORA WTP - TREATED	4137	No	Treatment Plant	-	-	Active
MONO VILLAGE WELL FE/MN PRE	58702	No	Treatment Plant	-	-	Active
MONO VILLAGE WELL FE/MN POST	58703	No	Treatment Plant	-	-	Active
RYBAR WELL 2 TREATED GAC	58709	No	Treatment Plant	-	-	Active
LAMBERT LAKE WELL - TRT CL & CCT	62150	No	Treatment Plant	-	-	Active
MILL VILLA WELL - TRT FE/MN_CL_CCT	6819	No	Treatment Plant	-	-	Active
MONO VILLAGE WTP TREATED - INACTIVE	58698	No	Treatment Plant	-	-	Inactive
CUESTA CENTER WELL - TRT CL & CCT INAC	62149	No	Treatment Plant	-	-	Inactive
MILL VILLA WELL - TREATED - INACTIVE	CA5510001008	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
GREENLEY WTP - TREATED	4125	Filtration, Rapid Sand	Particulate removal
GREENLEY WTP - TREATED	4125	Sedimentation	Particulate removal
GREENLEY WTP - TREATED	4125	Flocculation	Particulate removal
GREENLEY WTP - TREATED	4125	Rapid Mix	Particulate removal
GREENLEY WTP - TREATED	4125	Coagulation	Particulate removal
GREENLEY WTP - TREATED	4125	Hypochlorination, Pre	Disinfection
GREENLEY WTP - TREATED	4125	Hypochlorination, Post	Disinfection
SONORA WTP - TREATED	4137	Hypochlorination, Pre	Disinfection
SONORA WTP - TREATED	4137	Hypochlorination, Post	Disinfection
SONORA WTP - TREATED	4137	pH Adjustment, Post	Corrosion control
SONORA WTP - TREATED	4137	Filtration, Pressure Sand	Particulate removal
SONORA WTP - TREATED	4137	Sedimentation	Particulate removal
SONORA WTP - TREATED	4137	Flocculation	Particulate removal
SONORA WTP - TREATED	4137	Rapid Mix	Particulate removal
SONORA WTP - TREATED	4137	Coagulation	Particulate removal
MONO VILLAGE WTP TREATED - INACTIVE	58698	Filtration, Pressure Sand	Particulate removal
MONO VILLAGE WTP TREATED - INACTIVE	58698	Coagulation	Particulate removal
MONO VILLAGE WTP TREATED - INACTIVE	58698	Flocculation	Particulate removal
MONO VILLAGE WTP TREATED - INACTIVE	58698	Sedimentation	Particulate removal
MONO VILLAGE WTP TREATED - INACTIVE	58698	Hypochlorination, Post	Disinfection
MONO VILLAGE WTP TREATED - INACTIVE	58698	Hypochlorination, Pre	Disinfection
MONO VILLAGE WELL FE/MN PRE	58702	Hypochlorination, Post	Disinfection
MONO VILLAGE WELL FE/MN POST	58703	Filtration, Pressure Sand	Iron removal
RYBAR WELL 2 TREATED GAC	58709	Hypochlorination, Post	Disinfection
RYBAR WELL 2 TREATED GAC	58709	Activated Carbon, Granular	Organics removal
CUESTA CENTER WELL - TRT CL & CCT INAC	62149	Sequestration	Iron removal
CUESTA CENTER WELL - TRT CL & CCT INAC	62149	Hypochlorination, Post	Disinfection
LAMBERT LAKE WELL - TRT CL & CCT	62150	Sequestration	Iron removal
LAMBERT LAKE WELL - TRT CL & CCT	62150	Hypochlorination, Post	Disinfection
MILL VILLA WELL - TRT FE/MN_CL_CCT	6819	Filtration, Greensand	Iron removal
MILL VILLA WELL - TRT FE/MN_CL_CCT	6819	Hypochlorination, Pre	Iron removal
MILL VILLA WELL - TRT FE/MN_CL_CCT	6819	Inhibitor, Orthophosphate	Corrosion control
MILL VILLA WELL - TREATED - INACTIVE	CA5510001008	Sequestration	Iron removal
MILL VILLA WELL - TREATED - INACTIVE	CA5510001008	Sequestration	Manganese removal
MILL VILLA WELL - TREATED - INACTIVE	CA5510001008	Gaseous Chlorination, Post	Disinfection

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