Backflow Testing & Prevention

Backflow Testing

Backflow Testing & Prevention in Glendale & Surrounding Areas

Got a letter from your water provider? We test your backflow device, fix it if it fails and file the results for you. One call, done.

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Licensed & Insured

CSLB #1137484

150+ Five-Star
Reviews

Google and Yelp

10+ Years
Experience

Homes and businesses

Open 24 Hours

Mon to Sat

100% Satisfaction

Guarantee

Durable Pipe Repairs

Keep Your Water Safe and Your Water Provider Happy

A backflow prevention device keeps contaminated water from flowing backward into the clean public water supply. Fertilizer from your sprinkler system, chemicals from a commercial kitchen or water from a fire line should never end up in the drinking water. The device is what stops it.

Because the stakes are high, local water providers require these devices to be tested every year by a certified tester. YLP Plumbing handles the whole process: the test, any repairs or replacement, and filing the results with your water provider before the deadline. Homeowners, property managers and business owners get it off their to do list in one visit.

Sign

When You Need Backflow Service

You received an annual test notice

From your water provider.

New irrigation system

Most require a backflow device.

New commercial or fire line

Backflow protection is required.

Your device failed its test

Repair or replacement is needed.

Leaking or dripping device

A sign of worn internal parts.

Buying or managing a property

Make sure devices are compliant.

What we do

Our Backflow Services

Annual Backflow Testing

Performed by a certified tester.

Results Filing

We submit your test results to your water provider.

Backflow Repair

Worn checks, springs and seals rebuilt.

Device Installation and Replacement

For irrigation, commercial and fire lines.

Multi-Property Testing

Scheduling for property managers with several sites.

How it works

How Backflow Testing Works

1 Schedule

Book before your water provider’s deadline.

2 Test

We test the device on site, usually in under an hour.

3 Repair if Needed:

Upfront pricing for any repair.

4 File the Results

Submitted to your water provider, copy sent to you.

Test deadline coming up? Book now and we'll handle the paperwork.

Why YLP

Why Choose YLP for Backflow Testing

Certified Testing

Done right the first time.

Paperwork Handled

We file with your water provider.

Test and Repair in One Call

No need for a second company.

Homes and Businesses

Irrigation, commercial and multi-unit properties.

Cost

How Much Does Backflow Testing Cost?

Testing is usually a set price per device. Total cost depends on:

Close: Call for a free, upfront quote.

Customers We've Kept Compliant

Hear from homeowners and businesses who have used our plumbing services and
shared their experience with the service, communication, and overall process.

    
 
 
       Posted on Google  
   
   MN G 
 
 
 
 Trustindex verifies that the original source of the review is Google. Amazing job from Richard and the crew. 5/5 stars highly recommend this business.
  
 
      Posted on Google  
   
   Azka Khan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Richard came out to our house in LA county for camera inspection and they jetted and cleared our line. Wonderful job, the whole crew was amazing.
  
 
      Posted on Google  
   
   Muhammad 
 
 
 
 Trustindex verifies that the original source of the review is Google. YLP helped us out on multiple occasions. From their home inspections before we purchased our new home in 2025 to the water heaters we needed replaced and the drain clearing we needed. Its been a wonderful experience every single time. Richard and the office treat us like family, always punctual and professional.
  
 
      Posted on Google  
   
   Ibrahim Bshb 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fantastic work from the team. Recommend anyone in the Glendale California region to choose this team!
  
 
      Posted on Google  
   
   Huzaifa Ghori 
 
 
 
 Trustindex verifies that the original source of the review is Google. YLP Plumbing is the best choice for all your plumbing needs across the pasedena area. I had Richard come out and do an assessment for my father in laws house and he gave an amazing diagnosis with a great price and they did the job the same day. I highly recommend YLP. btw they have a lot of reviews on Yelp, thats where i found them.
  
 
      Posted on Google  
   
   Selda Elmayan 
 
 
 
 Trustindex verifies that the original source of the review is Google. I recently had my entire house repiped, and I couldn’t be happier with the results! Richard was professional, punctual, and extremely knowledgeable throughout the whole process. They explained everything clearly, worked efficiently, and made sure my home was clean after each day of work.

The water pressure is amazing now, and it feels great knowing my plumbing system is brand new and built to last. Finding someone this reliable and skilled is rare—I highly recommend YLP plumbing to anyone needing repiping or any plumbing work done right the first time!

SERVICE AREAS

Backflow Testing Across Our Service Area

Certified testing for customers of Glendale, Burbank, Pasadena and LA-area water providers

Common Questions

Backflow Testing FAQs

Why does my water provider require a backflow test?

To protect the public drinking water supply from contamination. Devices wear out over time, so annual testing confirms they still work.

How often do I need a test?

Typically once a year, and after any repair or installation.

Do you file the results for me?

Yes. We submit the results to your water provider and send you a copy

What happens if my device fails?

We’ll explain why, give you an upfront price to repair or replace it and retest once it’s fixed.

How long does a test take?

Most tests take under an hour per device.

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