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Annual testing ensures systems comply with required regional regulations.

Backflow happens when water flows in the opposite direction, allowing pollutants from a property to enter the clean water supply. This can introduce substances such as chemicals, bacteria, and other contaminants into what should be potable water. It’s a serious concern that requires proper prevention measures.

Annual backflow testing in San Francisco, California, and Bay Area counties is not optional—it’s a regulatory requirement. In line with the California Code of Regulations, Title 17, and local ordinances, any property equipped with a backflow prevention device must be tested each year. These evaluations must be completed by certified professionals to confirm compliance and system reliability.

What Is Backflow and Why Does It Matter?
Backflow occurs when water flows in the reverse direction, often caused by pressure changes in the plumbing system. When this happens, contaminants from the ground, irrigation systems, or industrial fluids can enter your clean water supply. Backflow prevention devices are essential in safeguarding drinking water from harmful pollutants.

Why Choose Our Backflow Testing Services
With over a decade of experience, we deliver professional backflow testing and prevention services across the San Francisco region. We’ve worked with a wide range of residential, commercial, and industrial clients. Our team offers:

  • Thorough inspections to confirm your system adheres to required safety regulations
  • Prompt, dependable service with options for same-day testing and emergency response
  • Straightforward pricing without unexpected charges

We’re committed to maintaining high standards and keeping your system operating as intended year after year.

The Benefits of Annual Backflow Testing

  • Protects Drinking Water – Prevents hazardous contamination of your water supply.
  • Ensures Legal Compliance – Avoid fines and stay compliant with local and state requirements.
  • Promotes System Reliability – Regular testing ensures your system functions properly year-round.
  • Early Detection – Catch and resolve minor issues before they become costly repairs.

Frequently Asked Questions

What is backflow and why is it dangerous?
Backflow happens when dirty water flows into clean water lines, potentially introducing harmful contaminants like chemicals or bacteria into your home’s drinking water.
How often should backflow preventers be tested?
Backflow prevention devices should be tested once a year to comply with safety regulations and ensure they’re working correctly.
Who is required to get a backflow test?
Any property with a backflow prevention device, including residential homes, commercial buildings, or industrial sites, is typically required by law to have annual testing.
Can backflow affect my drinking water quality?
Yes, backflow can cause pollutants to enter your drinking water supply, which can be harmful to your health if not detected and prevented.
What causes backflow in a plumbing system?
Backflow can be caused by sudden drops in water pressure, burst pipes, or cross-connections between clean and dirty water sources.
How do I know if my backflow system is working properly?
The only way to be sure is to have it tested by a certified technician who can assess and confirm proper function and compliance.
What happens if I skip my annual backflow test?
Skipping backflow testing can result in fines, legal penalties, or even contamination of your water supply. Annual testing helps keep your system and your water safe.

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