Backflow Prevention

Protect your drinking water with professional backflow prevention services. Grant Mechanical Inc. installs and tests backflow devices to keep your water supply clean and safe.

What You Need to Know

Backflow occurs when contaminated water flows backward into your clean water supply — often caused by sudden drops in water pressure or faulty plumbing connections. This can introduce harmful contaminants into your home or business’s drinking water system.

Grant Mechanical Inc. provides professional backflow prevention installation, testing, and repair to ensure your water supply remains safe and compliant with local regulations. Our certified technicians assess your plumbing system, install the proper backflow prevention devices, and conduct regular testing to ensure everything is functioning properly.

Whether you’re a homeowner, property manager, or business owner, having a reliable backflow prevention system is not just about compliance — it’s about protecting the health of everyone who relies on your water.

What's Included:

✓ Installation of new backflow prevention devices

✓ Annual testing and certification (as required by local code)

✓ Backflow device repair and replacement

✓ Inspection of cross-connections and risk points

✓ Maintenance of pressure vacuum breakers and double-check valves

✓ System upgrades to meet current safety standards

✓ Coordination with local authorities for compliance reporting

✓ Commercial, industrial, and residential service

✓ Documentation and service records for regulatory compliance

Backflow Prevention FAQ

Q1: What is backflow, and why is it dangerous?

A: Backflow is the reverse flow of contaminated water into your clean water supply. It can introduce pollutants, chemicals, or bacteria that pose serious health risks.

Q2: Do I need a backflow prevention device?

A: Yes, most commercial buildings and some residential properties require them by law, especially if your plumbing connects to irrigation systems, fire sprinklers, or boilers.

Q3: How often should backflow devices be tested?

A: In most municipalities, testing is required annually by a licensed professional to maintain compliance and ensure safety.

Q4: What causes backflow to happen?

A: Backflow can occur due to sudden drops in water pressure — for example, when a fire hydrant is used or a main water line breaks — allowing contaminated water to reverse flow.

Q5: Can you repair existing backflow prevention devices?

A: Yes. We can repair or replace faulty devices and provide the necessary testing documentation after repairs are complete.

Why Choose Us

At Grant Mechanical, we bring professionalism, problem-solving skills, and a touch of humor to every job. Plumbing might be serious business, but we believe service with a smile makes all the difference. After all, laughter is the best medicine… except when it comes to burst pipes—then it’s us.

Let us take the hassle out of plumbing for you. It’s what we do best.

Experience You Can Trust

We've been fixing leaks before it was cool.

Decades of industry knowledge and experience from routine repairs to complex installations.

Personalized Service

Think boutique plumbing without the pretentious vibe.

As a small business, we take pride in attention to detail and a customer-focused approach.

Hands-On Leadership

Yes, the boss gets his hands dirty—literally.

Accessibility and accountability is important to us. Our owner is always involved.

Plumbing Rockstars

We are Plumbers by Day, and Rockstars at Night!

Okay that might be a bit of a stretch.. but we ARE a lot of fun and no stranger to a crowd.

Still Unsure About Something?

Our Process

Grant Mechanical Inc. has a clear and consistent 4-step process that we follow for each project. To understand this process and set appropriate expectations, please review and contact us if you have any questions.

Step 1: Schedule Your Appointment

Fill out our online form, send us an email, call us, or request a call for fast service that fits your schedule.

Step 2: Thorough Inspection

We assess the issue, explain what’s happening, and offer clear solutions with no surprises.

Step 3: Repair or Install Solution

Our licensed plumbers fix the problem using quality materials and best practices.

Step 4: Satisfaction Guaranteed

Once complete, we’ll help you get setup with your new equipment and explain any changes we’ve made.

Service Areas

Grant Mechanical Inc. proudly provides Backflow Prevention to residential and commercial clients in and around the following areas:

More Plumbing Services

Grant Mechanical Inc. provides expert plumbing services to both residential and commercial clients in Cambridge, Ontario and surrounding communities.

With over 25 years of experience, hands-on leadership, and a healthy sense of humour, Grant Mechanical is your trusted plumbing partner in South-Western Ontario.