- Maintenance Superintendents Association - A non-profit volunteer organization of municipal government employees related to municipal maintenance and repair. History and background, quarterly newsletter and board members contact information.
- South Coast Air Quality Management District - Smog control agency for all or portions of Los Angeles, Orange, Riverside and San Bernardino Counties. Smog reports and pollution history, news, rules, regulations, programs for businesses.
- Southern California Association of Governments - SCAG represents the interests of over 15 million residents (excludes San Diego County), and is the area's metropolitan planning organization. Includes programs, projects and services.
