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Since its incorporation in 1960, the unprecedented growth of San Dimas has transformed the City from an essentially rural area to a well-balanced community offering industrial, commercial, and residential living. In addition to the 1,700 acre Frank G. Bonelli Recreational Area which lies within the City boundaries, there are many parks such as San Dimas Canyon Park, a city-owned golf course (San Dimas Canyon Golf Club), and over 27 miles of equestrian trails for riding. The city services include an extensive recreational program for youth and for senior citizens, and the City boasts a new modern City Hall, with excellent provisions made for County Sheriff and Fire Departments, along with a fine Los Angeles County Library and Engineering Regional Office.
Departments

The City of San Dimas is committed to excellence in the planning of the community with due consideration for the physical and social environment. The City Council and all City employees are committed to well-maintained facilities and being responsive to the needs of residents by providing necessary programs.

The City recognizes that its function is to serve the San Dimas residents and businesses and to address their concerns in a cooperative and courteous manner. San Dimas acknowledges that the community has a character that is enhanced by the preservation of its history, historical buildings, and terrain. The City serves as a resource giving all people a sense of belonging to the City through programs, organizations, and activities.
Residents Services

The City of San Dimas has something for everyone. Our goal is to provide inclusive programs and services to foster health and wellness, lifelong learning, and community.
Business Services

The City of San Dimas keeps you up to date on City projects and smart growth strategies that promote economic growth and sustainability to enhance San Dimas' unique cultural and historical character.

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Documents

Sewer Information

The City’s sewers are maintained by Los Angeles County Consolidated Sewer Maintenance District. The County’s Annual Report provides information on how to avoid an expensive drain back up, as well as contact information and background on the division. Visit the Los Angeles County Department of Public Works website for more information.

To provide a consistent, statewide regulatory approach to address the issue of sanitary sewer overflow (SSO), the State Water Resources Control Board (State Water Board) adopted Statewide General Waste Discharge Requirements (WDRs) for Sanitary Sewer Systems, Water Quality Order No. 2006-0003 (Sanitary Sewer Systems WDR) on May 2, 2006. The Sanitary Sewer Systems WDR requires public agencies that own or operate sanitary sewer systems to develop and implement sewer system management plans and report all SSOs to the State Water Board’s online SSO database.

The State Water Resources Control Board requires all agencies that own or operate a wastewater collection system, to develop and implement a Sewer System Management Plan (SSMP) that documents how the City manages its wastewater collection system. On December 6, 2022, the State Water Resources Control Board adopted the reissued Statewide General Waste Discharge Requirements and the Monitoring and Reporting Program (WDR) by issuing Order No. 2022-0103-DWQ.

This WDR requires owners and operators of publicly owned collection sewer systems to develop and present a Sanitary Sewer Management Plan (SSMP) to their governing body for approval. The WDR requires that the SSMP be updated every five years and must include any significant program changes. The City of San Dimas is required to comply with this order as it owns approximately 103 miles of sewer that are primarily maintained by the Los Angeles County Sewer Maintenance District.

The City’s Sewer System Management Plan (SSMP) can be viewed through the link below. Hard copies and copies of the attachments may be considered upon request at City Hall.

Adopted Sewer System Management Plan

If you have any questions or concerns regarding the sewer, please contact the City of San Dimas Public Works Department at (909) 394-6240. For emergencies, contact the Los Angeles County Consolidated Sewer Maintenance District directly at 1-800-675-HELP(4357).