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PWS ID	CA3510001
PWS Name	HOLLISTER, CITY OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	26017
County Served	San Benito

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
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9905023	Known	01-APR-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9905024	Known	01-APR-2024	30-JUN-2024	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9905022	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9905021	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9905020	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9905018	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9905017	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9905016	Returned to Compliance	01-OCT-2015	31-OCT-2015	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	1005018	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	1005017	Returned to Compliance	01-JAN-2010	31-MAR-2010	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Uranium	205016	Returned to Compliance	01-JAN-2002	31-DEC-2004	No
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	5013	Returned to Compliance	01-MAR-2000	31-MAR-2000	No
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9905004	Returned to Compliance	01-JAN-1999	31-MAR-1999	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9905014	Returned to Compliance	01-JAN-1999	01-JAN-2001	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	9905015	Returned to Compliance	01-JAN-1999	01-JAN-2001	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9805001	Returned to Compliance	31-JUL-1998	30-SEP-1998	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	9705003	Returned to Compliance	31-JUL-1997	30-SEP-1997	No
Other	Notification, Public	Miscellaneous Other Rules	-	8700852	Known	01-SEP-1987	30-SEP-1987	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
9905022	9905023	SFL	State Administrative/Compliance Order without penalty issued	25-JUL-2024	State	FAILURE TO SAMPLE IN ACCORDANCE WITH THE APPROVED DISINFECTION BYPRODUCT RULE MONITORING PLAN FOR SECOND QUARTER 2024
9905022	9905024	SFL	State Administrative/Compliance Order without penalty issued	25-JUL-2024	State	FAILURE TO SAMPLE IN ACCORDANCE WITH THE APPROVED DISINFECTION BYPRODUCT RULE MONITORING PLAN FOR SECOND QUARTER 2024
9905021	9905022	SOX	State Compliance achieved	10-JAN-2023	State	RTC 1/10/2023, when their TTHM RAA was back below the MCL
9905019	9905021	SOX	State Compliance achieved	11-JAN-2019	State	-
9905019	9905020	SOX	State Compliance achieved	11-JAN-2019	State	-
9905013	9905018	SOX	State Compliance achieved	30-SEP-2016	State	Compliance met for citation 02_05_16C_004_3510001_02. WS TTHM RAA has returned to <MCL
9905013	9905017	SOX	State Compliance achieved	30-SEP-2016	State	Compliance met for citation 02_05_16C_004_3510001_02. WS TTHM RAA has returned to <MCL
9905018	9905016	SOX	State Compliance achieved	30-NOV-2015	State	This TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
1205018	1005018	SOX	State Compliance achieved	25-AUG-2011	State	ENF_NO:02-05-10C-028; COMPLIANCE WITH 8.31.10 CIT NO N03 DURING 1ST & 2ND QUARTERS 2010-NASH RD WELL
1205018	1005017	SOX	State Compliance achieved	25-AUG-2011	State	ENF_NO:02-05-10C-028; COMPLIANCE WITH 8.31.10 CIT NO N03 DURING 1ST & 2ND QUARTERS 2010-NASH RD WELL
705015	205016	SOX	State Compliance achieved	04-NOV-2005	State	ENF_NO:02-05-05N-045; COMPLIANCE CHEMICAL M&R NOV ISSUED-FAILURE TO MONITOR URANIUM
1305020	9905015	SOX	State Compliance achieved	11-JUN-2002	State	ENF_NO:02-05-02C-006; COMPLIANCE WITH 5.7.02 CIT FAILURE TO CONDUCT T22 DURING 1999-2001
1305020	9905014	SOX	State Compliance achieved	11-JUN-2002	State	ENF_NO:02-05-02C-006; COMPLIANCE WITH 5.7.02 CIT FAILURE TO CONDUCT T22 DURING 1999-2001
5011	5013	SIA	State Violation/Reminder Notice	23-JUN-2000	State	-
9905009	9905004	SOX	State Compliance achieved	16-JUN-1999	State	ENF_NO:NOV; COMPLY WITH PN/ WELL WAS SHUT DOWN
9905010	9705003	SOX	State Compliance achieved	19-FEB-1999	State	COMPLIANCE CHEM MONIT (1996-1998) FAILURE
9905010	9805001	SOX	State Compliance achieved	19-FEB-1999	State	COMPLIANCE CHEM MONIT (1996-1998) FAILURE

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WEST HILLS CONNECTION AT WELL 2	66969	Yes	Consecutive Connection	Surface water	Other	Active
FALLON ROAD WELL 03 - INACTIVE	12165	Yes	Well	Ground water	Permanent	Inactive
CULLUM WELL 01	12167	Yes	Well	Ground water	Permanent	Active
CULLUM WELL 02	12166	Yes	Well	Ground water	Permanent	Active
BUNDESON ROAD WELL 02	12164	Yes	Well	Ground water	Permanent	Active
NASH ROAD WELL 05	12162	Yes	Well	Ground water	Permanent	Active
SOUTH STREET WELL 04	12149	Yes	Well	Ground water	Permanent	Active
SAN FELIPE ROAD WELL 01 - INACTIVE	21481	Yes	Well	Ground water	Other	Inactive
WELL 01 - DESTROYED	18766	Yes	Well	Ground water	Other	Inactive
AIRLINE HIGHWAY WELL 06 - INACTIVE	12160	Yes	Well	Ground water	Other	Inactive
MISSION OAKS MHP INTERTIE- BAD ENTRY	66354	Yes	Consecutive Connection	Ground water	Other	Inactive
MEMORIAL AND SUNSET INTERTIE	30522	Yes	Consecutive Connection	Surface water	Permanent	Active
MEMORIAL DR. - BOOSTER STATION INTERTIE	65814	Yes	Consecutive Connection	Surface water	Permanent	Active
MEMORIAL AND SUNNYSLOPE INTERTIE	65815	Yes	Consecutive Connection	Surface water	Permanent	Active
SANTA ANA PRV	65820	Yes	Consecutive Connection	Surface water	Permanent	Active
SAN BENITO COUNTY CORPORATION YARD PRV	65821	Yes	Consecutive Connection	Surface water	Permanent	Active
WEST HILLS CONNECTION AT WELL 4	65955	Yes	Consecutive Connection	Surface water	Permanent	Active
WEST HILLS CONNECTION AT WELL 5	65956	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	30521	No	Distribution System/Zone	-	-	Active
SOUTH STREET WELL 04 - CL2 TRTMNT XCLD	454	No	Treatment Plant	-	-	Active
NASH ROAD WELL 05 - CL2 TREATMENT XCLD	455	No	Treatment Plant	-	-	Active
CULLUM WELL 02 - CL2 TREATMENT XCLD	465	No	Treatment Plant	-	-	Active
BUNDESON ROAD WELL 02 - CL2 TRTMNT XCLD	488	No	Treatment Plant	-	-	Active
CULLUM WELL 01 - CL2 TREATMENT XCLD	500	No	Treatment Plant	-	-	Active
FALLON ROAD WELL 03 - CL2 TRTMNT - INAC	463	No	Treatment Plant	-	-	Inactive
AIRLINE HIGHWAY WELL 06 CL2 INAC - XCLD	499	No	Treatment Plant	-	-	Inactive
SAN FELIPE RD W01-CL2/ COR CONTR - INAC	6714	No	Treatment Plant	-	-	Inactive
SAN FELIPE ROAD WELL 01-CL2 & CORR CONTR	CA3510001010	No	Treatment Plant	-	-	Inactive

1 - 28 of 28

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
SOUTH STREET WELL 04 - CL2 TRTMNT XCLD	454	Hypochlorination, Post	Disinfection
NASH ROAD WELL 05 - CL2 TREATMENT XCLD	455	Hypochlorination, Post	Disinfection
CULLUM WELL 02 - CL2 TREATMENT XCLD	465	Hypochlorination, Post	Disinfection
BUNDESON ROAD WELL 02 - CL2 TRTMNT XCLD	488	Hypochlorination, Post	Disinfection
AIRLINE HIGHWAY WELL 06 CL2 INAC - XCLD	499	Inhibitor, Orthophosphate	Corrosion control
AIRLINE HIGHWAY WELL 06 CL2 INAC - XCLD	499	Hypochlorination, Post	Disinfection
CULLUM WELL 01 - CL2 TREATMENT XCLD	500	Gaseous Chlorination, Post	Disinfection
SAN FELIPE ROAD WELL 01-CL2 & CORR CONTR	CA3510001010	Hypochlorination, Post	Disinfection
SAN FELIPE ROAD WELL 01-CL2 & CORR CONTR	CA3510001010	Inhibitor, Orthophosphate	Corrosion control

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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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