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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	1206005	Returned to Compliance	01-NOV-2022	30-NOV-2022	No
TT	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Stage 1 Disinfectants and Disinfection Byproducts Rule	1206003	Returned to Compliance	03-AUG-2012	-	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	406001	Returned to Compliance	01-JAN-2004	31-MAR-2004	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
9606011	1206005	SOX	State Compliance achieved	24-JUL-2023	State	Failure to collect raw water coliform samples from the raw water sources prior to surface water treatment plant operation
9606006	1206003	SFL	State Administrative/Compliance Order without penalty issued	26-JUL-2013	State	04-06-13C-008
406006	406001	SFL	State Administrative/Compliance Order without penalty issued	27-JUL-2004	State	ENF_NO:05-06-04C-004; TTHM M&R VIOLATION

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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
CHORRO VALLEY PROJECT - SLO COUNTY	31377	Yes	Consecutive Connection	Surface water	Permanent	Active
CO OP WELL 01 - INACTIVE	24039	Yes	Well	Ground water	Permanent	Inactive
WELL 03 - INACTIVE	21518	Yes	Well	Ground water	Other	Inactive
WELL 02 - INACTIVE	21510	Yes	Well	Ground water	Other	Inactive
WHALE ROCK RESERVOIR - RAW	31381	Yes	Intake	Surface water	Permanent	Active
COMBINED TREATMENT PLANT - RAW	31379	Yes	Intake	Surface water	Permanent	Active
CHORRO RESERVOIR - RAW	31378	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	31380	No	Distribution System/Zone	-	-	Active
TREATMENT PLANT - TREATED	209	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT - TREATED	209	Sedimentation	Particulate removal
TREATMENT PLANT - TREATED	209	Rapid Mix	Particulate removal
TREATMENT PLANT - TREATED	209	Flocculation	Particulate removal
TREATMENT PLANT - TREATED	209	Coagulation	Particulate removal
TREATMENT PLANT - TREATED	209	Filtered	Particulate removal
TREATMENT PLANT - TREATED	209	Chloramines	Disinfection

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