Blair Merlehan Plumbing

Backflow Prevention in Wagga Wagga

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Wagga Wagga Backflow Prevention

When it comes to water safety, prevention is everything. Backflow occurs when water flows in the wrong direction—carrying contaminants from gardens, pipes, or industrial systems into your clean supply. It’s a serious health risk, but thankfully, it’s entirely preventable.


At Blair Merlehan Plumbing in Wagga Wagga, we offer certified backflow prevention and testing services to ensure your water stays clean, compliant, and safe to use. Whether you're a homeowner, business owner, or manage a commercial site, we’ve got the experience and licensing to install and maintain devices that meet regulatory standards.


We make sure your system is secure, working correctly, and protected against cross-contamination.


Call 0406 804 633 to schedule your backflow test or install today.

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Certified Testing, Maintenance & Device Installations

Backflow prevention devices are required in many homes and commercial settings—especially when your plumbing connects to irrigation systems, fire hose reels, or any setup with the potential for contamination.


We supply, install, test, and certify these devices to meet council and legal requirements. With routine testing, we ensure your device is functioning as it should and hasn't been compromised by wear, age, or water pressure changes.


We also handle device replacements and upgrades, along with submitting compliance paperwork to local authorities where required. Our testing process is thorough, quick, and disruption-free—perfect for businesses that need to keep things moving without delays.


Need annual testing or a new installation? We’re here to help protect your water supply.

A Man Is Working on A Hose in The Dirt — Blair Merlehan Plumbing in Wagga Wagga, NSW
A Man Is Kneeling Down Fixing a Water Pump — Blair Merlehan Plumbing in Wagga Wagga, NSW

Back Flow Prevention Installations & Servicing

Backflow prevention devices stop contaminated water from entering your clean water supply. They’re essential in properties with irrigation systems, fire hoses, or commercial kitchens. Installation and annual servicing by a qualified plumber keeps the device operating correctly and compliant with local water authority requirements.

Backflow Prevention Devices

There are several types of backflow prevention devices, including single check valves and RPZ valves. The type needed depends on property risk level. Devices must be installed correctly and tested regularly to ensure they’re providing the right level of protection.

A Man Is Fixing a Water Meter on A Pipe — Blair Merlehan Plumbing in Wagga Wagga, NSW
A Close up Of a Water Pipe with A Valve Attached to It — Blair Merlehan Plumbing in Wagga Wagga, NSW

Water Pressure Testing

Water pressure that’s too high or low can cause damage to appliances and fixtures or lead to poor flow. A plumber can carry out pressure testing to identify the issue, then make adjustments or install pressure-reducing valves where needed.

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