Backflow Testing, Installation & Repair
Safe water, fully compliant.
If your business’s backflow preventer is not working, it is a problem, for your safety and your compliance. We test, install, and repair backflow assemblies of all makes and sizes for restaurants, rentals, offices, and properties across Clarksburg and Montgomery County, send annual reminders, and submit your results so you do not have to worry about a thing.
Tested & filed
Compliance handled for youWhy backflow protection matters
A backflow preventer keeps contaminated water from being siphoned backward into the clean water supply, protecting your customers, your staff, and the public. Because lives depend on it, the water authority requires most commercial and irrigation backflow assemblies to be tested every year by a certified tester. We handle the whole process: testing all makes, models, and sizes, repairing or replacing assemblies that fail, installing the right device for new businesses, and submitting the results for you, so you stay safe and compliant without the hassle.
What we do
Backflow services
Testing, repair, installation, and the paperwork, handled by certified pros so you stay compliant.
Backflow Testing
Certified annual testing on all makes, models, and sizes of backflow assemblies, done right and documented.
Backflow Repair
When an assembly fails, we rebuild or repair it fast so you pass and stay open for business.
Backflow Installation
For new businesses and builds, we determine and install the right backflow prevention device for your needs.
Annual Testing & Reminders
We track your due dates and notify you when it is time, so a lapsed test never catches you off guard.
Test Result Submission
We submit your test results to the water authority for you, so you do not have to worry about a thing.
Backflow Replacement
Old or failed preventers replaced with a compliant assembly sized correctly for your system.
How it works
How backflow testing works
We make staying compliant simple, start to finish.
Schedule the test
We track your due date and reach out, or come right away when you call.
Test the assembly
A certified tester checks your backflow preventer to confirm it is protecting your water.
Repair if it fails
If it does not pass, we rebuild, repair, or replace it on the spot when possible.
Submit the results
We file the report with the water authority for you, so your compliance is documented.
When to call
When you need backflow service
If any of these apply, it is time to test, repair, or install, and we will keep you compliant.
Your annual test is due
Most commercial and irrigation assemblies must be tested every year. We track it so you never lapse.
You got a notice from the water authority
If you received a testing notice or a non-compliance letter, we handle the test and the paperwork.
You are opening or building a business
New construction and new businesses need the right device selected, installed, and tested.
Your assembly failed a test
A failed backflow test means repair or replacement before you are compliant again.
Discolored or odd-tasting water
Backflow issues can let contaminants into the supply. Get it checked right away.
You added irrigation or equipment
New irrigation, boilers, or equipment often require their own backflow protection.
Test due or got a notice? We'll handle it.
Know your device
Types of backflow preventers
We test, repair, and install every common type, and help you pick the right one for new installs.
RPZ Assembly
Reduced pressure zone assemblies, used for high-hazard applications where protection is critical.
Double Check Valve
Double check valve assemblies, common for lower-hazard commercial and fire line protection.
PVB / Irrigation
Pressure vacuum breakers and irrigation backflow devices that protect against lawn and system contaminants.
Compliance in Maryland
Why this matters here
Across Montgomery County, water authorities require annual backflow testing for most commercial properties and irrigation systems, with results filed on time. Miss it and you risk fines or a shut-off. We track your due dates, test and repair as needed, and submit everything, so compliance is one less thing on your plate.
- Most commercial and irrigation backflows need annual testing
- Let us track your due date so a test never lapses
- Failed assemblies must be repaired or replaced to comply
- We submit results to the water authority for you
Set it and forget it
Annual reminders
Put your backflow testing on autopilot. We will notify you when it is due and handle the test and filing every year.
Certified & licensed
A crew you are glad to let in
Backflow testing has to be done by a certified tester, and our own trained, background checked team is exactly that. We test it right, fix what fails, file the paperwork, and keep your business safe and compliant.

From our neighbors
What your neighbors say
Good questions
Backflow testing FAQ
What business owners and property managers ask us most about backflow.
What is a backflow preventer and why does it need testing?
A backflow preventer stops contaminated water from flowing backward into the clean water supply. Because it protects public health, the water authority requires most commercial and irrigation assemblies to be tested every year by a certified tester to confirm they still work.
How often does backflow need to be tested?
In most of Montgomery County, commercial and irrigation backflow assemblies must be tested annually. We track your due date and remind you, so a lapsed test never catches you off guard.
Do you submit the test results for me?
Yes. We file your backflow test results with the water authority for you, so your compliance is documented and you do not have to worry about a thing.
What happens if my backflow fails the test?
If an assembly does not pass, we repair or rebuild it, and replace it if needed, then retest so you are compliant. We can often do the repair on the same visit.
Do you install new backflow devices?
Yes. For new businesses and builds, we determine which backflow prevention device your system requires, then install and test it to code.
Do I need backflow testing for irrigation?
Often yes. Irrigation systems typically require their own backflow protection and annual testing. We test and service irrigation backflow devices along with your other assemblies.
What areas do you serve?
We serve Clarksburg, Germantown, Gaithersburg, Rockville, Damascus, Potomac, North Bethesda, and the surrounding Montgomery and Frederick County area.
Let's get you tested.
Let's Flow.
Test due, failed assembly, or a new install? Book online or call a real person. We test, repair, install, and file the results, so your business stays safe and compliant. Here 24/7 for emergencies.
