Stockton Backflow Prevention Services: Protecting Your Water Supply

Clean, safe drinking water is something every homeowner and business owner can count on. But without proper safeguards, contaminated water from irrigation systems, toilets, or commercial plumbing can flow backward into your water supply. This is where backflow prevention devices come into play—and Knights Plumbing & Drain is your trusted expert for backflow installation, maintenance, and annual testing.

If your property requires backflow services, don’t wait. Call us today at 1-209-689-2001 to schedule professional installation or testing. More about our Plumber here

What Is Backflow—and Why Is It Dangerous?

Backflow occurs when water flows in the reverse direction due to pressure changes in your plumbing system. This can allow dirty or contaminated water—often from sprinkler systems, boilers, or industrial equipment—to mix with the clean drinking water supply.

Backflow can introduce harmful contaminants like:

  • Fertilizers and pesticides

  • Bacteria from toilets or sinks

  • Industrial chemicals

  • Dirty water from pools or irrigation systems

To prevent this, California plumbing codes require backflow prevention devices on many types of residential, commercial, and municipal properties.

Do You Need a Backflow Prevention Device?

You may be required to install a backflow prevention device if:

  • You have a sprinkler or irrigation system

  • You use a well or other secondary water source

  • You operate a restaurant, salon, laundry facility, or medical building

  • Your business handles chemicals, hazardous materials, or food prep

  • Your property connects to Stockton’s public water supply with a risk of cross-contamination

Our team can assess your plumbing setup and determine whether a device is required, and ensure it meets Stockton Irrigation District (MID) and City of  Stockton water safety regulations.

Backflow Prevention Device Installation

Knights Plumbing & Drain provides professional backflow installation services for:

  • Residential homes

  • Multi-family housing complexes

  • Commercial buildings

  • Schools, churches, and municipal buildings

We install top-quality Reduced Pressure Zone (RPZ) and Double Check Valve Assembly (DCVA) devices that meet all California codes. Our licensed plumbers ensure proper placement, secure connections, and full compliance with city inspection requirements.

Whether you need a new system installed or want to upgrade an old device, we’ve got the experience and tools to do the job right.

Certified Backflow Testing

Backflow prevention devices must be tested annually by a state-certified backflow tester. This ensures the device is working properly and keeping contaminants out of your water system.

Knights Plumbing & Drain offers:

  • State-certified testing for all makes and models

  • Fast and accurate results

  • Digital reports for your records

  • Automatic reminders for your next annual test

  • Repairs or replacements if your system fails inspection

We’ll also file the required paperwork with local water authorities so you remain compliant with city and state backflow regulations.

Repair and Maintenance Services

Backflow devices can wear down over time due to mineral buildup, corrosion, or freezing. If your device is leaking, failing tests, or hasn’t been serviced in years, it may need repair or replacement.

Our services include:

  • Valve and seal replacements

  • Leak detection and sealing

  • Full rebuilds of existing backflow assemblies

  • Upgrading to code-compliant units

  • Winterization and insulation services to protect from freezing

We’ll restore your system to optimal function so you can stay protected and in compliance.

Why Choose Knights Plumbing & Drain?

At Knights Plumbing & Drain, we understand how important it is to keep your water safe—and your plumbing system up to code. Stockton customers choose us for backflow prevention services because we offer:

  • Licensed and certified backflow testers

  • Code-compliant installations and repairs

  • Honest, upfront pricing with no hidden fees

  • Quick turnaround times and scheduling flexibility

  • Comprehensive reporting for local water departments

  • Excellent customer service with clear communication

We’re a local team that knows Stockton’s regulations, neighborhoods, and water systems. You can count on us for dependable service backed by years of experience.

Protect Your Water Supply—Call Knights Plumbing & Drain

Don’t leave your water safety to chance. Whether you need a brand-new backflow prevention system, annual testing, or emergency repairs, Knights Plumbing & Drain has your back.

Knights Plumbing & Drain
Stockton CA
209-689-2001

We’ll help you protect your property, your family, and your community—one backflow device at a time. Call today to schedule your appointment.