Cross-Connection Program

Coming Soon: PWP to Launch New Online System for Cross Connection Program

Pasadena Water and Power (PWP) is in the process of converting to an online system for backflow device annual testing and reporting. Effective fall 2023, customers who currently have backflow device(s) will be required to submit the testing reports online. This upgrade will not impact the testing schedule of your device(s).

Each year, PWP mails testing reminder notices to over 700 water customers who are required to equip and maintain backflow prevention devices at their drinking water meters and/or fire services. These devices need to be tested at the time of installation, after repairs or a relocation, and annually on an ongoing basis. The testing is mandated by the State and managed by PWP’s Cross Connection Control Program. Currently, customers are required to complete the testing and return the completed test reports to PWP by mail or email. Once implemented, the online system will replace this process for submitting testing reports.

PWP is preparing to launch a cloud-based platform through Syncta[1]. Certified testers will use this platform to submit the completed test results online which will prevent lost mail and improve reporting timeliness and convenience. In addition to testing report submittals, the online system will provide key automation features allowing customers to:

  • Store device information and compliance history
  • Receive reminders when the annual testing is due
  • Change customer contact information

More detailed information on system enrollment, testing report submission, and other frequently asked questions will be provided on this page in the coming months.

For questions, contact or call (626) 744-4498.

[1] Syncta applies a processing charge of $4.95 per device when testers submit a test report online. The processing fee is not a city fee. It is directly charged to testers by Syncta.

Program Overview

Pasadena Water is committed to providing safe and reliable water. A Cross-Connection Program is one of the tools used to protect the water distribution system. There are two types of Cross-Connection Control programs, system protection and internal protection. System protection protects the water supply up to the service connection or water meter. System protection prevents any on-site contamination from getting back into the water distribution system by requiring a backflow prevention assembly to be installed at the meter or service connection. Internal protection protects the quality of water within the customer’s plumbing system.  

Our Cross-Connection Control Program is a joint effort of the Pasadena Water and Pasadena Public Health Departments. Pasadena Water is responsible for system protection while the Pasadena Public Health Department is responsible for internal protection. The Pasadena Water Cross-Connection Control Program oversees and monitors the installation, testing, and maintenance of backflow prevention assemblies within the Pasadena Water Department’s service area. The program utilizes administrative staff to maintain our database, send reminder notices, conduct site surveys, and to assist stakeholders.

Frequently Asked Questions

What is backflow?
Backflow occurs when water from your property's plumbing flows backward into the City's water system. Backflow conditions can occur when the City's water system pressure drops (like during a fire or a water main break), or when a customer's water pressure is higher than the City's water system.

Who is required to install a backflow prevention device?
Under state law, any customer's water system that has the potential to create a hazardous condition is required to install a backflow prevention device. This includes, but not limited to, fire services, irrigation services, industrial, commercial, medical services, hotels/motels, schools, food facilities, multi-story buildings, and multi-family domestic water services.

What is needed to install a backflow device?
If your property is required to install a backflow device, you must follow the requirements for new or upgraded water services. Visit our Water Services Planning page for more information.

I received a notice of annual backflow prevention assembly testing, now what?
It is the responsibility (and at the expense) of the consumer at any premise where backflow prevention assemblies are installed to have a field test performed. The field test is to be completed by the due date on the notice and be performed by a certified backflow prevention assembly tester at least once per year.

Who can I call to test my backflow prevention assembly?
A backflow prevention assembly tester that is certified with the County of Los Angeles Public Health Department. Click here for a list of L.A. County Certified Backflow Prevention Testing businesses.

How do I know if a tester is certified to test my backflow prevention assembly?
Click here for a list of L.A. County Certified Backflow Prevention Device Testers.

Where can I get another Field Test Form?
If your property has a backflow device, you will automatically receive a Field Test Form from PWP for your certified tester to complete. You may need another form if you misplace your form, have a backflow device that needs to be replaced, or have a new backflow device that needs to be installed. Certification form for new installations. Certification form for existing devices.

What happens if my device fails its annual test?
Submit the failed test form and promptly make arrangements to repair the backflow prevention assembly then re-test. If the backflow prevention assembly continues to fail, the device will have to be replaced and tested.

What if my backflow device is stolen?
PWP has noticed an increase in backflow device theft. Unfortunately, because backflow preventers are made of brass and copper, they are a target for thieves. If your device is stolen, first inform the Pasadena Police Department by calling their non-emergency number at 626.744.4241. Then, contact PWP to report the theft and get additional information about replacement bypass meter installs by calling 626.744.4498 or emailing Remember to immediately replace and retest the backflow prevention device. Learn more about how to prevent theft of your device, and what steps to take in the event of theft by clicking here

My backflow assembly has been tested and certified, now what?
You can e-mail the field test form to:

Or, you can mail the original test report to:

Pasadena Water and Power
Cross-Connection Control Program
150 S. Los Robles Ave. Suite 200
Pasadena, CA. 91101


What is the City of Pasadena’s Cross-Connection Policy?
Pasadena Water has established requirements and regulations for cross-connection and backflow prevention complementary to those imposed by State and Municipal regulations. Please click here to download the Cross Connection Policy in Appendix “A-2” of our Water Regulations.