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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, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	9606006	Known	01-MAY-2025	30-JUN-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9606004	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	9606003	Returned to Compliance	01-AUG-1996	31-AUG-1996	Yes

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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
9706007	9606006	SFL	State Administrative/Compliance Order without penalty issued	01-AUG-2025	State	Failed to collect raw source samples in the months following a total coliform positive result in 2 wells.
9706006	9606004	SOX	State Compliance achieved	12-MAR-2013	State	04_06_13C_003_4010001_03
9706004	9606003	SOX	State Compliance achieved	28-APR-1997	State	-

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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
GROVER BEACH INTERCONNECTION	73023	Yes	Consecutive Connection	Ground water	Emergency	Active
WELL 10	45679	Yes	Well	Ground water	Permanent	Active
WELL 07	12064	Yes	Well	Ground water	Permanent	Active
WELL 01	12053	Yes	Well	Ground water	Permanent	Active
WELL 03	12052	Yes	Well	Ground water	Permanent	Active
WELL 05 SERVICE YARD	12050	Yes	Well	Ground water	Permanent	Active
WELL 08 (1990)	12048	Yes	Well	Ground water	Permanent	Active
WELL 09 (1990)	12047	Yes	Well	Ground water	Permanent	Active
WELL 04	12037	Yes	Well	Ground water	Permanent	Active
WELL 06 - AGRICULTURAL - ABANDONED	8129	Yes	Well	Ground water	Other	Inactive
PISMO BEACH EMERGENCY INTERTIE	73027	Yes	Consecutive Connection	Ground water	Emergency	Active
OCEANO CSD EMERGENCY INTERTIE	73029	Yes	Consecutive Connection	Ground water	Emergency	Active
LOPEZ TREATED	31314	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	31313	No	Distribution System/Zone	-	-	Active
RESERVOIR 1	70967	No	Storage	-	-	Active
RESERVOIR 2	70968	No	Storage	-	-	Active
WELL 09 (FE & MN TREATMENT), CL	162	No	Treatment Plant	-	-	Active
BLEND (WELLS 01, 03, 04, 05, 07, 08)	171	No	Treatment Plant	-	-	Active
WELL 10 FE / MN TP, CL	45680	No	Treatment Plant	-	-	Active
CENTRAL TRT CL-WELLS 01,03,04,05,07,&08A	5761	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 09 (FE & MN TREATMENT), CL	162	Hypochlorination, Post	Disinfection
WELL 09 (FE & MN TREATMENT), CL	162	Permanganate	Iron removal
WELL 09 (FE & MN TREATMENT), CL	162	Filtration, Pressure Sand	Iron removal
BLEND (WELLS 01, 03, 04, 05, 07, 08)	171	Hypochlorination, Post	Disinfection
BLEND (WELLS 01, 03, 04, 05, 07, 08)	171	Rapid Mix	Inorganics removal
WELL 10 FE / MN TP, CL	45680	Filtration, Pressure Sand	Iron removal
WELL 10 FE / MN TP, CL	45680	Filtration, Greensand	Manganese removal
WELL 10 FE / MN TP, CL	45680	Hypochlorination, Post	Disinfection
CENTRAL TRT CL-WELLS 01,03,04,05,07,&08A	5761	Hypochlorination, Post	Disinfection

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