Chicagoland and Northwest Indiana Backflow Testing Experts

Quick quotes and on-time backflow testing appointments with certified professionals!

Annual backflow testing is required by Illinois and Indiana law.

Backflow testing is required by law in the State of Illinois and Indiana. Chicago Backflow has been testing backflows in both states for over 30 years, providing expert backflow services to businesses and homes near you. Affordable backflow testing complying with state backflow regulations has been the heart of what we do. 

1 year backflow device warranty
On time Backflow Appointments Icon
Icon stating we are compliant with local and state backflow code

Our team is comprised of fully licensed inspectors who specialize solely in the meticulous testing, certification, and repair of backflow preventers. Unlike other providers, our commitment goes beyond the ordinary.

Backflow Testing Near Me

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Affordable Backflow Testing Program

You will experience a level of assurance that sets us apart with our all-inclusive testing program.

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(708) 389-5600

Excellent Customer Experience

Test with us, and you are family!

We understand annual backflow tests only happen once a year or the backflow emergency at 9pm after hours. During these times, you need professionalism, backflow expertise, fast, 24/7 service. Certainly, you need peace of mind. Choosing CBI ensures you get access the best backflow testers in the State of Illinois and Indiana, the device parts you need, and industry-leading customer service. Our inspectors only job is the testing and maintenance of backflow preventers, making them the best in the business. Our goal is to get in, get the job done, and get out…leaving you with more time and money to get on with your day.

Chicago Backflow Inc.
4.6
Based on 9 reviews
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Robert White
13:35 06 Sep 22
On time
Easy to work with
Priced right
Tested our plumbing/fire system & sprinkler back flow in one visit
Well done
Nice people
J Hy
23:35 30 Jul 22
Top notch service!!! We are a new to the area company that needed a portable RPZ to use on city of Chicago hydrants, the owner himself took the time to sit down with us and write down exactly what to get and where to get it. They also set up a prompt test date for it. Thanks again!
Tommy M
11:44 29 Jun 22
We used CBI for our backflow inspections. They were extremely responsive and quick to give us pricing. The technician, Mark, was on time, professional, quick, efficient and able to answer many question I had about our specific devices. Couldn't have asked for a better experience. CBI had much better pricing than other companies in the area who we've used in the past. 5/5.
Lewis Thomas
17:37 05 May 22
Very professional team from start to finish. Had a couple of jobs for them and they had them scheduled and completed in just a few days. Great company to do business with.
justin zhu
17:41 22 Mar 22
Chicago Backflow was very professional from the office staff to the onsite technician. The office staff provided a time-window and Genaro, the technician called early and showed up on-time.
As a plumbing novice, I do not have much experience with backflows or plumbing. I highly encourage to opt for their $150 test/repair package instead of the standard $99 for first-time customers. It is slightly extra but if the backflow test were to fail, you might be quoted the standard price that will be substantially more.

What to Expect During A Backflow Test

  • Our expert tester will promptly meet with your designated contact to provide a comprehensive briefing for the job at hand. Prior to commencement, we diligently conduct any necessary background or security checks as per your requirements.
  • Upon locating the backflow device, we ensure readiness with the appropriate forms for any agreed-upon tests. The backflow test initiation involves meticulous utilization of various tools and gauges to meticulously assess any pressure differentials within the backflow device.
  • In the majority of cases, the device functions flawlessly and passes the test without issue. However, should a failure occur, our seasoned testers adeptly address the situation by disassembling the device to remove any debris obstructing the valves. Over our years of experience, we’ve encountered an array of obstructions, from tennis balls to large rocks, promptly resolving such issues.
  • Equipped with a comprehensive inventory of spare parts, we are fully prepared to address any necessary repairs on-site. Subsequent to disassembly, resetting the tamper switch is undertaken as part of our meticulous process.
  • Before departing, we consistently ensure to brief the property owner on the completed tasks and any forthcoming visits.

The CBI Promise: Six Points of Excellence

Superior Customer Service
We believe that outstanding service goes beyond technical expertise. We’re here to support you every step of the way, from initial inquiries to follow-up after the job is done. Our team prioritizes responsiveness, clear communication, and a genuinely helpful approach that makes each interaction smooth and informative.
Exceptionally Skilled Mechanics
At CBI, we employ only the most knowledgeable and experienced mechanics in the industry. Our technicians are not only highly trained but also dedicated to continuous learning, ensuring they’re up-to-date on the latest industry practices and regulations.
A Cleaner, Safer Environment
We take pride in treating your facility with respect. Our team promises to leave each job site cleaner than we found it, ensuring that every space is restored to full functionality without any lingering mess.
Code-Approved and Compliant Materials
Safety and compliance are non-negotiable at CBI. We use only materials that meet or exceed code requirements and industry standards, giving you peace of mind that every part of your system is up to code and compliant.
Thorough Testing and Certification
Every new backflow assembly we install is meticulously tested and certified by our expert team. You’ll receive full documentation of your system’s compliance, so you can be confident that your facility meets all regulatory requirements and remains safe for your occupants.
Comprehensive One-Year Warranty on All Parts and Labor
Our commitment doesn’t end when the job is done. We stand by our work and offer a one-year warranty on all parts and labor. If anything isn’t right, we’ll make it right—guaranteed
At Chicago Backflow Inc., we are more than a service provider; we are a backflow testing company built on values, pride in craftsmanship, and an unwavering commitment to our customers. The CBI Star embedded in our logo is more than just a design—it represents our story and our promise to you. Like the iconic stars on the Chicago flag, each point of the CBI Star symbolizes something meaningful.
Our star represents the fateful meeting between our founders, Mike and Don, which sparked the idea for CBI and laid the foundation for a company dedicated to high standards in backflow testing, repair, installation, and emergencies. Each of the six points of our star is a commitment to excellence, embodying our dedication to serving you with unparalleled expertise, service, and quality.

Each point of the CBI Star is a testament to the values that drive our professional, licensed backflow inspectors and our friendly customer service team. When you choose Chicago Backflow Inc., you are choosing a partner who values your safety, peace of mind, and satisfaction above all else. We are proud to serve the Chicago metropolitan and Northwest Indiana community to bring our CBI promise to every job, big or small.
Let CBI protect your facility’s water system with excellence and integrity in backflow testing, repairs, installations, and emergencies.

CBI has tested and certified a wide variety of business and will meet your property/building requirements!

  • Restaurants
  • Multi-Family Buildings
  • Commercial Properties
  • Small Businesses
  • Higher Education Buildings

  • Medical & Hospital Facilities
  • Industrial Complexes
  • High-Rise Buildings
  • Municipal Complexes.

Chicago Backflow proudly serves a diverse range of businesses, from small local shops to large industrial facilities. We understand that each client has unique needs, and we have successfully accommodated numerous special requests to ensure customer satisfaction. Whether it is following specific procedures for repairing devices, such as adjusting how we conduct our work to minimize disruption or meeting strict security requirements through comprehensive background checks for high-security locations, we are committed to providing flexible, professional, and reliable backflow services tailored to each customer’s individual needs. We recognize the importance of maintaining uninterrupted operations and guest experiences. CBI strives to do everything we can to make your experience seamless. Please mention any additional requests or concerns you may have during your scheduling.