When it comes to backflow preventer testing, a lot of Charleston homeowners ask the same question:
“Can’t I just test it myself?”
It sounds like it should be simple enough? After all, it’s just checking water pressure and flow, right? Wrong. In Charleston, backflow testing isn’t just about turning a few valves. It’s a tightly regulated process that involves the city, certified equipment, and a licensed professional to keep your drinking water safe.

A Rooter Man Charleston technician uses specialized equipment to perform a certified backflow test and ensure safe, compliant water service.
Why You Can’t Legally Test Your Backflow Preventer Yourself in Charleston
In Charleston and the surrounding areas, only certified testers are allowed to perform backflow tests, and for good reason. Rooter Man’s licensed backflow testers work directly with Charleston Water System to schedule shutoffs, complete official testing documentation, and submit pass/fail results on behalf of homeowners.
Every test must be recorded with the city. Even if you had the right tools (which most homeowners don’t), it’s very difficult to pass a backflow unit without city coordination.
So when you see DIY videos online about backflow testing, they don’t apply here in terms of passing the city’s testing regulations. Charleston operates under strict compliance requirements in order to best protect Charleston’s public water supply.
The Role of a Certified Backflow Tester
Rooter Man’s certified backflow testing involves specialized equipment, including calibrated test kits that read pressure levels inside the backflow preventer. Each backflow must complete a state course annually through the South Carolina Department of Environmental Services.
Testing isn’t just checking if water is flowing the right way. It’s about ensuring sewer water or contaminants never enter your home’s clean water line. That means verifying the internal valves, seals, and differential pressures inside the device, something that takes training and precision to get right.
What Most Homeowners Don’t Realize About Backflow Preventer Testing
Many homeowners, especially new ones, don’t realize just how important a backflow preventer really is. It’s what keeps wastewater, irrigation runoff, and other contaminants from being siphoned back into the clean water supply.
During a professional inspection, Rooter Man techs first visually check for wear or corrosion, then test pressure to see if the system passes.
- If the backflow passes, it’s documented with Charleston Water and you’re good for another year.
- If it fails, the technician opens it up to inspect and clean or replace the failing parts – often saving the customer from having to buy a new unit entirely.
- What our techs do goes above and beyond the kind of expertise you get from a YouTube tutorial.
The Charleston Difference: Communication, Compliance, and Care
Testing in Charleston isn’t just about plumbing, it’s about partnership with the city. Rooter Man coordinates directly with Charleston Water to schedule water shutoffs and ensure everything is done by the book.
Even our most experienced testers, like Bear, note that there are several types of backflow preventers used throughout the Lowcountry. Each one has a slightly different build, making experience and familiarity essential for accurate testing.
Why Homeowners Appreciate the Professional Process
Most homeowners we work with are understanding and even honestly relieved when they learn they can’t test their own backflow preventers. Once they realize how much coordination, documentation, and skill it takes, they feel more confident knowing their system is being handled correctly.
Rooter Man makes it easy. We send annual testing reminders, provide official reports, and even give you a heads-up about your system’s condition. Whether you might need a replacement next year or if it still has several good years left, our techs will keep you informed on the condition of your backflow.
Bottom Line: Hire a Pro and Protect Your Water
Trying to test your own backflow preventer in Charleston isn’t just risky — it’s non-compliant. A certified professional ensures your water system stays safe, your reports are filed correctly, and your home remains up to code.
Rooter Man’s backflow testers handle everything from scheduling with Charleston Water to testing, documentation, and repairs if needed — so you don’t have to lift a wrench.


