# Cross-Connection Control in Los Angeles County, CA > Hazard assessments, CCC program administration, and CCC Plans for Los Angeles County water systems, with completed work for Norwalk and El Segundo. Source: https://www.exoduswater.com/california-coverage/los-angeles-county Los Angeles County, California # Cross-Connection Control and Water System Compliance in Los Angeles County Exodus runs the City of Norwalk’s cross-connection control program and completed a hazard assessment program for the City of El Segundo. [Request service](https://www.exoduswater.com/contact-us?county=Los%20Angeles) [See the local work](#local-work) At a glance ## Completed work in Los Angeles County - **City of Norwalk** Hazard Assessments, Cross-Connection Control Program - **City of El Segundo** Hazard Assessments Every Exodus service is available in Los Angeles County, coordinated from our headquarters in Thousand Oaks. [Request service](https://www.exoduswater.com/contact-us?county=Los%20Angeles) [(805) 991-7333](tel:+18059917333) Completed in Los Angeles County ## Hazard assessments, inside a program or on their own Our Los Angeles County work centers on hazard assessments: reviewing service connections for cross-connection hazards and the backflow protection each one requires. For Norwalk, hazard assessments sit inside a full program. Exodus also coordinates backflow testing and handles ongoing program administration built to the state policy handbook. For El Segundo, the engagement was a limited-scope hazard assessment program, completed with the hazard assessment report delivered to the City. Case Study ### City of Norwalk Hazard Assessments, Cross-Connection Control Program One of the larger city water systems in Los Angeles County Exodus runs Norwalk’s cross-connection control program: hazard assessments, testing coordination, and program administration. [See Cross-Connection Control services →](https://www.exoduswater.com/cross-connection-control) Case Study ### City of El Segundo Hazard Assessments City water department with 5,233 service connections in Los Angeles County Exodus completed El Segundo’s limited-scope hazard assessment program and delivered the report to the City. [See Cross-Connection Control services →](https://www.exoduswater.com/cross-connection-control) ## Services for Los Angeles County water systems Hazard assessments can be done in person or by approved alternative methods, and they connect to the rest of a cross-connection control program. - ### [Hazard Assessments](https://www.exoduswater.com/cross-connection-control) Identifies cross-connection hazards and the backflow protection required, in person or by approved alternative methods. - ### [Ongoing CCCP Administration & Program Coordination](https://www.exoduswater.com/cross-connection-control) Coordinator/specialist support, tracking, scheduling, and recordkeeping to keep your program current. - ### [Backflow Prevention Assembly Survey & Inventory](https://www.exoduswater.com/cross-connection-control) Locates and catalogs existing backflow assemblies and air gaps to build your tracking baseline. - ### [Backflow Prevention Assembly Field Testing & Air-Gap Inspection](https://www.exoduswater.com/backflow) Annual and post-repair testing by a certified tester, with air-gap inspections and repair coordination. - ### [Backflow Incident Response & Notification Support](https://www.exoduswater.com/cross-connection-control) Investigation, notification, and reporting support when a backflow incident occurs. - ### [CCCP Development](https://www.exoduswater.com/cross-connection-control) Complete, submittal-ready CCC Plan built to the State CCCPH for your system type, prepared with a certified CCC Specialist. Service pages - [Cross-Connection Control programs ](https://www.exoduswater.com/cross-connection-control) - [Backflow testing ](https://www.exoduswater.com/backflow) - [All services ](https://www.exoduswater.com/services) ## Who oversees water systems in Los Angeles County The State Water Resources Control Board’s Division of Drinking Water (DDW) regulates California public water systems through its district offices. In counties that have elected a Local Primacy Agency (LPA) program, the county environmental health agency oversees small community water systems with fewer than 200 service connections and noncommunity water systems, under a delegation agreement with the State Water Board. Cross-Connection Control Plans go to whichever of the two oversees your system. According to the State Water Board’s district office map, four DDW districts share the Division’s office at 500 North Central Avenue in Glendale: Hollywood (District 07), Metropolitan (District 15), Central (District 16), and Angeles (District 22). Which one reviews your system depends on the system; we confirm it before a plan is submitted. Sources - [State Water Board, Division of Drinking Water District Offices map (effective July 2026) (opens in a new tab) ](https://www.waterboards.ca.gov/drinking%5Fwater/programs/documents/ddwem/DDWdistrictofficesmap.pdf) - [State Water Board, Capacity Development Report (Local Primacy Agencies) (opens in a new tab) ](https://www.waterboards.ca.gov/drinking%5Fwater/certlic/drinkingwater/docs/2025/2023-2025-capdev-report.pdf) - [State Water Board, Division of Drinking Water district list (opens in a new tab) ](https://www.waterboards.ca.gov/drinking%5Fwater/programs/districts/) Not sure which office reviews your plan? Tell us your system name or public water system number and we will identify the reviewing office as part of scoping your project. More regional pages - [Ventura County ](https://www.exoduswater.com/california-coverage/ventura-county) - [San Bernardino County ](https://www.exoduswater.com/california-coverage/san-bernardino-county) - [Los Angeles County on the coverage map ](https://www.exoduswater.com/california-coverage#los-angeles-county) ## Planning cross-connection control work in Los Angeles County? Send a request or call, and we will confirm scope, the reviewing office, and next steps for your system. [Request service](https://www.exoduswater.com/contact-us?county=Los%20Angeles) [(805) 991-7333](tel:+18059917333)