How to Prep for Your Annual Backflow Test in Illinois
If you're a homeowner or business owner in Illinois, staying compliant with backflow testing requirements is key to protecting your property and your local water supply. Annual backflow prevention device testing helps ensure contaminated water doesn't reverse flow into clean water lines—a serious health hazard if left unchecked.
In this post, we’ll walk you through how to prepare for your backflow test so it goes smoothly, meets your city or village’s regulations, and avoids costly delays or rescheduling.
What Is a Backflow Test?
A backflow test is an inspection performed by a licensed and certified backflow tester to verify that your backflow prevention device is functioning correctly. These devices are typically found on:
Irrigation systems
Fire sprinkler systems
Commercial and industrial plumbing systems
In many areas—including Lake County, Illinois—annual testing is required by local municipalities or water providers.
1. Locate Your Backflow Preventer
Start by identifying where your backflow device is installed. It’s commonly located:
Outdoors near your irrigation system or water meter
Inside a utility or mechanical room (in commercial properties)
In or near fire protection systems
Knowing the exact location helps both you and your backflow tester get started faster.
2. Clear Access to the Device
To perform a proper backflow test, your technician needs clear access to the device. Make sure to:
Trim bushes or landscaping if it’s outside
Remove snow or debris
Unlock any gates, rooms, or enclosures around the device
This ensures the testing equipment can be connected without obstacles.
3. Confirm the Water Supply Is On
Backflow testing requires water pressure to measure performance. If the system is turned off (often the case in winter), turn it back on before your scheduled test.
If you’re not sure whether your system is active, your landscaper or maintenance crew can assist.
4. Notify Tenants or Staff (If Applicable)
If your backflow device is in a shared space or could cause a brief water interruption, let others know in advance. This applies to:
Apartment buildings
Office complexes
Commercial tenants
Proactive communication helps avoid complaints or confusion during the service window.
5. Look for Visible Damage or Leaks
Take a quick visual inspection around the device. If you notice:
Leaking water
Rust or corrosion
Cracks (common after freezing temperatures)
…it’s best to report this before testing. Damage can prevent the test from being completed and may require repairs first.
6. Hire a Certified Backflow Tester in Illinois
In Illinois, backflow testing must be done by a state-certified backflow prevention tester. At Lake County Backflow, we’re fully licensed, insured, and specialize in testing for:
Irrigation backflow systems
Fire protection systems
Commercial and industrial plumbing
We handle test submission, documentation, and reminders for future tests to keep you in full compliance.
Why Backflow Testing Is Important
Protects your drinking water from contamination
Keeps your property compliant with local ordinances
Avoids fines or service interruptions
Identifies problems early, before they become expensive
Final Thoughts
Your annual backflow test doesn’t need to be stressful. A little preparation goes a long way in keeping your water safe and your plumbing systems running smoothly.
Need to schedule your backflow test in Lake County, IL or nearby areas?
✅ Contact Lake County Backflow today to book your inspection or get answers to your questions. We’re here to make the process easy, professional, and fully compliant.
Top Plumbing and Water Resources for Illinois Homeowners
As a homeowner in Illinois, staying on top of your plumbing and water systems isn’t just about comfort—it’s about safety, compliance, and protecting your investment. Whether you're dealing with an emergency, planning preventive maintenance, or just looking to learn more, having reliable resources at your fingertips makes a big difference.
Here are some of the top plumbing and water resources every Illinois homeowner should know about:
1. Illinois Department of Public Health (IDPH) – Plumbing Program
The IDPH oversees plumbing code enforcement and licensing across the state. Their site includes access to state plumbing codes, approved backflow devices, and information on how to maintain safe, code-compliant systems.
2. Lake County Public Works – Water & Sewer Services
Visit Lake County Public Works »
For Lake County residents, this is your go-to resource for water utility info, service alerts, and water quality reports. They also provide guidance on meter maintenance, water main flushing, and backflow prevention requirements.
3. DuPage County Backflow – Certified Testing & Education
DuPageBackflow.com is a trusted provider in DuPage County offering expert backflow testing and education. Their site is a great resource for homeowners who want to understand their annual testing obligations and stay in compliance with local regulations.
4. Illinois EPA – Safe Drinking Water Program
The Illinois EPA’s drinking water section is full of valuable info—from lead service line updates to public water system reports. It’s ideal for anyone looking to stay informed about the quality of their water and broader state initiatives.
5. Local Plumbing & Backflow Testing Professionals
When it comes to protecting your water supply, choosing the right professional matters. At Lake County Backflow, we specialize in certified backflow testing for residential and commercial properties throughout Lake, McHenry, and northern Cook counties. We're here to make annual testing quick, simple, and affordable.
Contact Lake County Backflow »
6. Syncta – Digital Tools for Water System Management
For property managers or homeowners looking to stay organized, Syncta is a digital tool many professionals (including us) use to manage testing, inspections, and reports online. It’s a great way to stay on top of deadlines and keep everything in one place.
Final Thoughts
Water safety and plumbing maintenance might not be glamorous, but they’re essential. Staying informed and having the right tools and pros on your side will save you time, money, and stress in the long run.
If you have questions about backflow testing or need help navigating local requirements, reach out to Lake County Backflow. We’re happy to help!
What Is Backflow Testing and Why It's Essential
Backflow testing might not be the first thing that comes to mind when you think about plumbing or property maintenance, but it plays a critical role in protecting public health. Whether you're a homeowner, business owner, or property manager, understanding backflow and why testing is necessary can help prevent serious contamination issues in your water supply.
What Is Backflow?
Backflow happens when water flows in the reverse direction from its intended path. Normally, water should flow from the municipal supply into your home or building. But under certain conditions—like a drop in pressure or a malfunction in the system—contaminated water can be sucked or pushed back into the clean water supply. This is called back siphonage or back pressure.
The risk? Contaminants like fertilizers, pesticides, human waste, or industrial chemicals can enter your drinking water. And that’s not just a plumbing problem—it’s a public health hazard.
How Does a Backflow Preventer Work?
To stop this from happening, plumbing systems use a backflow preventer—a device that only allows water to flow in one direction. Think of it like a one-way valve for your water line. It’s especially important in systems where there’s a cross-connection between clean and potentially contaminated water sources. These include irrigation systems, fire sprinklers, and commercial plumbing setups.
But here’s the catch: backflow preventers can wear out, break, or malfunction. That’s where testing comes in.
What Is Backflow Testing?
Backflow testing is the process of checking that your backflow prevention device is working properly. It typically involves:
Shutting off the water supply to isolate the device.
Using a test kit to measure pressure and flow through the device.
Checking valves to make sure they open and close correctly.
Looking for leaks or signs of failure.
The test must be done by a certified backflow tester—someone trained and licensed to handle this specific task.
Why Is Backflow Testing Necessary?
1. Health and Safety
This is the number one reason. If your backflow preventer fails and you don’t catch it, contaminated water can end up in your drinking supply. That means bacteria, chemicals, or even raw sewage can get into your faucet. Backflow incidents have led to serious illnesses and even deaths in the past.
2. Legal Requirements
In many cities and states, annual backflow testing is mandatory for certain properties. This is especially true for commercial buildings, apartment complexes, or any property with irrigation systems or fire suppression systems. Failing to comply can lead to fines, shutoff notices, or worse.
3. Early Detection of Issues
Backflow testing doesn’t just protect water quality. It also helps identify leaks or mechanical failures in your plumbing system that could become costly problems down the road.
4. Maintaining Insurance and Compliance
Some insurance policies require regular backflow testing to maintain coverage. Plus, keeping up with your local utility or city’s regulations avoids any disruptions in service.
Who Needs Backflow Testing?
Not every home has a backflow preventer that needs annual testing, but the following types of properties usually do:
Commercial buildings
Multifamily residential properties
Properties with irrigation systems
Facilities with fire sprinklers
Industrial or medical facilities
If you’re unsure, your local water authority or a licensed plumber can tell you whether your property needs it.
Final Thoughts
Backflow testing isn’t just a box to check—it’s a crucial safeguard for your water and your community. Skipping it puts everyone at risk. If your property has a backflow preventer, make sure it gets tested annually by a certified professional. It’s a small step that makes a big difference in keeping water safe, clean, and flowing in the right direction.
We’re Opening Soon!
Let Lake County Backflow Handle Your Next Test
We’re proud to announce that Lake County Backflow will be opening soon and ready to serve homeowners, businesses, and property managers throughout Lake County.
If you have a backflow prevention device, you already know it needs to be tested every year to stay in compliance with state and local regulations. But finding a reliable, responsive company to handle that test? That can be a hassle. That’s why we’re here.
At Lake County Backflow, we make backflow testing simple. Our goal is to provide fast, honest, and professional service — no runaround, no upselling, just what you need to keep your system safe and compliant.
We’re fully certified, insured, and committed to doing the job right the first time. Whether you’re managing a single-family home or a multi-unit commercial property, we’re ready to make your backflow testing one less thing you have to worry about.
Here’s what you can expect with Lake County Backflow:
Timely scheduling – We show up when we say we will.
Transparent pricing – No surprises or hidden fees.
Professional reports – Filed properly with your water provider.
Friendly service – We’re easy to work with and happy to answer questions.
We’re wrapping up the final steps before officially opening, but we’re already building our early schedule — and we’d love to test your backflow device. If you’d like to be one of our first customers, reach out now and we’ll make sure you’re at the top of the list.
Stay tuned for more updates. In the meantime, feel free to contact us with questions or to reserve your spot.
Thanks for supporting a local business — we can’t wait to work with you.