Agenda Item: 7
CITY OF SANTA CLARITA
AGENDA REPORT
CONSENT CALENDAR
CITY MANAGER APPROVAL:
DATE: November 25, 2025
SUBJECT: RESOLUTION APPROVING THE UPDATED SEWER SYSTEM
MANAGEMENT PLAN (SSMP)
DEPARTMENT: Public Works
PRESENTER: Amalia Marreh
RECOMMENDED ACTION
City Council:
1. Adopt a resolution approving the updated Sewer System Management Plan.
2. Find that the Sewer System Management Plan is exempt from the California Environmental Quality Act pursuant to California Code of Regulations, Title 14, Chapter 3, Article 19, Class 1, Section 15301, Existing Facilities.
3. Authorize the City Manager, or designee, to make future minor updates as may be required by the State Water Resources Control Board that do not have a financial impact to the City, to comply with Waste Discharge Requirements.
4. Direct the City Clerk to record the certified original resolution in the Los Angeles County Registrar-Recorder’s office.
BACKGROUND
On May 2, 2006, the State Water Resources Control Board (SWRCB) adopted the Statewide General Waste Discharge Requirement (WDR) for Sanitary Sewer Systems, Water Quality Order No. 2006-0003-DWQ. The WDR applies to all public agencies in California that own or operate sanitary sewer collection systems with more than one mile of sewer lines that convey untreated wastewater to a publicly owned treatment facility. One of the requirements of the WDR is that each covered agency prepare, certify, and implement a Sewer System Management Plan (SSMP). City of Santa Clarita (City) staff prepared and the City Council adopted the City’s SSMP on May 26, 2009. The City Council recertified the SSMP on March 24, 2015.
The SSMP describes the activities the City uses to manage its sanitary sewer collection system effectively and to reduce sewer overflows in a manner designed to minimize water quality impacts and potential nuisance conditions.
On December 6, 2022, the SWRCB adopted an updated WDR to regulate wastewater collection system management as General Order No. 2022-0103-DWQ. It became effective on June 5, 2023, and superseded the previous State Water Resources Control Board Order No. 2006-0003- DWQ. Pursuant to the updated WDR, enrollees are required to present the SSMP to their governing board for re-adoption every six years following the date of its original approval or whenever there is any significant change in the document, as determined by the SWRCB.
The City utilizes the services of Los Angeles County Department of Public Works Consolidated Sewer Maintenance District (County) for the maintenance and operation of the City’s sewer system. As such, the City’s SSMP was prepared in coordination with the County’s SSMP. In accordance with the WDR, the updated SSMP incorporates all required elements, including identification of the City’s legal authority, operation and maintenance program, pipe design and performance standards, overflow emergency response plan, system evaluation and capacity assurance plan, monitoring and audit program, and communication program.
ALTERNATIVE ACTION
Other action as determined by the City Council.
FISCAL IMPACT
There is no fiscal impact assocated with this action.
ATTACHMENTS
Resolution
Sewer System Management Plan (available in the City Clerk's Reading File)