| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1151426 |
01/19/2026 |
Order Conditions |
The City of Hollister violated General Permit section III.3 and section VI.B.1 when treatment storage, and/or disposal of waste caused or contributed to nuisance odor complaints from 1/19/26 through 2/17/26 as described in the NOV. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Report |
| 1151427 |
12/10/2025 |
Order Conditions |
City of Hollister is violating General Permit section IV.E.2 and IV.E.3 by using the effluent storage pond (the off-specification pond) for sludge storage (documented in Attachment A). The Central Coast Water Board did not observe a liner at the effluent storage pond; therefore, the Central Coast Water Board assumes that this pond does not preclude infiltration of waste into soil or groundwater. Based on the description of the Facility in the Notice of Applicability, the effluent storage pond was not authorized for sludge storage. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Inspection |
| 1151423 |
12/10/2025 |
Order Conditions |
City of Hollister violated General Permit section VI.B.4 and section VI.B.1 as the wastewater system, including the headworks screening, the rotating drum screens, the MBR, the sludge stabilization ponds, and the chlorine contact chamber were not in good working order. The system was not operating as designed or as described in the Title 22 Engineering Report. During the December 10, 2025 site inspection, equipment failure was observed at numerous processes, including, but not limited to, the rotating drum screens and the MBR |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Inspection |
| 1151428 |
12/10/2025 |
Order Conditions |
The City of Hollister violated General Permit section III.12 by producing recycled water in a manner that is different than their accepted Title 22 Engineering Reprot. Based on observations from the December 10, 2025 site inspection (Attachment A), the City of Hollister is not operating the recycled water components as described in the most recent Title 22 Engineering Report dated April 2008. Additionally, Central Coast Water Board staff observed that the chlorine contact chamber is not being operated as described in the Title 22 Engineering Report. NOV Table 1 provides a summary of residual chlorine concentrations for the period between March 2, 2024, and August 13, 2025, that exceeded the designated range outlined in the Title 22 Engineering Report. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Inspection |
| 1151425 |
08/24/2025 |
LREP |
The City of Hollister violated the General Permit section VI.C.2 because Central Coast Water Board staff were not notified of the bypass or overflow conditions that occurred starting on August 24, 2025 until the December 10, 2025 site inspection. Notification of bypass or overflow, and additional reporting, is also required by Standard Provisions C.3, Standard Provisions D.1, and Monitoring and Reporting Program Section VIII.B. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Report |
| 1151424 |
08/24/2025 |
Order Conditions |
The City of Hollister violated the General Permit section III.5 by allowing partially treated wastewater to overflow from the aeration basins. City of Hollister staff explained that the water was contained in on-site sewer drains that were re-routed to the headworks. During the January 15, 2026 monthly meeting with Central Coast Water Board staff to discuss project status, the City of Hollister reported that overflow at the aeration basins occurred between August 24, 2025, and August 27, 2025; September 9, 2025 through September 20, 2025; and from September 22, 2025 until approximately December 24, 2025. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Report |
| 1145531 |
05/20/2025 |
CAT1 |
Settleable Solids Daily Maximum limit is 0.5 mg/L and reported value was 1.5 mg/L. |
|
Violation |
B |
Report |
| 1139765 |
10/18/2024 |
DMON |
Failure to monitor influent for the third week of August. |
|
Violation |
B |
Report |
| 1135215 |
07/15/2024 |
DMON |
Failure to monitor influent and effluent PH for the first week of August as well as effluent PH for the third week of August. |
|
Violation |
B |
Report |
| 1151429 |
05/02/2024 |
Deficient Reporting |
[8 Violations] The City of Hollister violated the General Permit section VI.D, by submitting self-monitoring reports that were missing the required reporting information. A review of Central Coast Water Board records indicate that the submitted quarterly and annual reports for the 2024 and 2025 reporting period did not contain all required information. Missing report information includes, but may not be limited to the instances described in the NOV. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Report |
| 1151431 |
01/01/2024 |
Order Conditions |
[50 Receiving Water (Groundwater) Violations condensed into this order condition violation] Based on a review of data from the reports shown in Attachment B Table B-1, the City of Hollister is likely violating the groundwater limitations for constituents detected in site wells MW-14, MW-31S, MW-4, P-10D, and P-8. as described in NOV Attachment B. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Report |
| 1151430 |
01/01/2024 |
Order Conditions |
[71 Effluent Violations condensed into this order condition violation] Data indicates there are likely violations of effluent limitations and groundwater limitations, of total dissolved solids, sodium, chloride, sulfate, total nitrogen, total suspended solids, and settleable solids as described in NOV Attachment B. |
City of Hollister is meeting with the Central Coast Water Board monthly to describe compliance progress. The first monthly meeting occurred on January 15, 2026. The City of Hollister must submit a Non-Compliance Report on or before April 20, 2026. The City of Hollister must obtain Central Coast Water Board staff approval prior to delivering recycled water. The City of Hollister must demonstrate it can comply with Title 22 Code of Regulations, Division 4, Chapter 3. |
Violation |
B |
Report |
| 1123744 |
01/01/2023 |
CAT1 |
Chloride Annual Average (Mean) limit is 150 mg/L and reported value was 223 mg/L. |
Discharger did not report specific corrective actions. |
Violation |
B |
Report |
| 1110437 |
07/05/2022 |
OEV |
Total Coliform Instantaneous Maximum limit is 23 MPN/100 mL and reported value was 86 MPN/100 mL. |
|
Violation |
B |
Report |
| 1100154 |
12/31/2021 |
CAT1 |
Chloride Annual Average (Mean) limit is 150 mg/L and reported value was 237 mg/L. |
|
Violation |
B |
Report |
| 1100153 |
12/31/2021 |
CAT1 |
Sodium, Total Daily Average (Mean) limit is 200 mg/L and reported value was 203 mg/L. |
|
Violation |
B |
Report |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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