Cities in Michigan that Require Regular Backflow Testing

Are you searching for information on backflow testing Michigan residents? Backflow testing is a new requirement that many cities in Michigan are implementing, leaving homeowners confused about what to do or who to call. 

You’re in the right place if you’ve recently received a backflow testing notice from your township and aren’t sure what to do. Here, we’ll explain backflow testing, its benefits, and Michigan cities requiring regular testing. 

So, keep reading to learn more about backflow testing Michigan edition. 

What is Backflow Testing? 

Backflow testing is part of the state’s cross-connection control program to help prevent water contamination. It refers to the process of checking backflow prevention devices to ensure they are working correctly. These devices are installed in water systems to prevent contaminants from flowing back into the clean water supply.

What is Backflow?

Backflow occurs when the normal direction of water flow is reversed, potentially causing contaminated water to enter the clean water supply. This can happen due to backpressure (when the pressure in a system exceeds the pressure of the incoming water supply) or back-siphonage (when there is a sudden drop in water pressure, such as during a fire hydrant use or a water main break).

The Basics of Backflow Prevention Devices 

Backflow prevention devices are essential components in protecting water systems from contamination. They are designed to prevent reverse flow, which can occur due to backpressure or back siphonage. These devices are also the ones that will be “tested” to ensure they’re working.

Next, we will explore the most common types of backflow prevention devices. 

Air Gap

An air gap is a physical separation between the water supply and the receiving vessel. It is the simplest and most effective form of backflow prevention.

Air gaps rely on gravity to prevent contaminated water from siphoning back into the clean water supply. A vertical space (usually twice the diameter of the water supply pipe) between the outlet and the flood-level rim of the receiving vessel ensures that water cannot flow back into the supply system.

It is commonly used in sink faucets, dishwashers, and commercial kitchen equipment. It is typically found in places where water discharge occurs, such as sinks and tanks.

Reduced Pressure Zone (RPZ) Assemblies

RPZ assemblies are advanced backflow prevention devices that provide the highest protection against back pressure and back siphonage. They consist of two independently acting check valves with a pressure-monitored chamber between them. If the pressure in the supply side drops, the relief valve opens to discharge water, preventing backflow.

These are often installed in high-risk areas such as commercial and industrial properties, irrigation systems, and medical facilities where the potential for contamination is significant.

Double Check Valve Assemblies

A double check valve assembly consists of two check valves assembled in series, offering redundancy if one valve fails. Both check valves operate independently, allowing water to flow in one direction and preventing reverse flow if backpressure occurs.

These devices are most suitable for low to medium-hazard applications such as residential sprinkler systems, fire protection systems, and smaller commercial buildings.

Pressure Vacuum Breakers (PVB)

Pressure vacuum breakers are commonly used in irrigation systems to prevent back siphonage. The device consists of an inlet shutoff valve, a check valve, an air inlet valve, and an outlet shutoff valve. When pressure drops, the air inlet valve opens to break the vacuum and prevent backflow.

Atmospheric Vacuum Breakers (AVB)

Atmospheric Vacuum Breakers, or AVBs, are simple and cost-effective backflow prevention devices designed for backsiphonage protection. They consist of a check valve and an air inlet valve that opens when the pressure drops, allowing air to enter and preventing reverse flow. AVBs are commonly used in hose bibs, lawn sprinkler systems, and other point-of-use installations where the risk of backpressure is low.

The Benefits of Backflow Testing Michigan Requirements

After the Flint water crisis, Michigan is taking water contaminants more seriously than ever before. For residents, backflow testing may be an annoying requirement to add to a long list of things but rest assured, it has benefits. 

1. Health and safety: Ensures drinking water remains free from contaminants and pollutants, protecting public health.
2. Regulatory compliance: Many local and state regulations require regular backflow testing to maintain water safety standards. Performing backflow testing can save homeowners from receiving fines or penalties. 
3. Preventing contamination: Identifies potential issues before they cause contamination, ensuring that problems are addressed promptly.
4. System integrity: Helps maintain the integrity and reliability of the water supply system by ensuring all components are functioning correctly.
5. Cost savings: Prevents costly repairs and health issues that could arise from contaminated water supplies.
6. Peace of mind: Assures homeowners and businesses that their water supply is safe and secure.

Michigan Cities that Require Backflow Testing 

Are you unsure if you’re in a city requiring backflow testing? Here’s the complete list of cities that require backflow testing as of the writing of this article. 

• Troy – Troy mandates regular backflow assembly testing to prevent contaminants from entering the drinking water supply through backflow situations.
• Grand Rapids – The city has a robust cross-connection control program that includes backflow prevention to protect the water system from contamination​.
• Grand Traverse County – This county also requires backflow prevention and testing to safeguard against potential contaminants entering the water supply​.
• Royal Oak – The city requires backflow prevention systems and regular inspections to ensure compliance and protect the drinking water supply from contamination.

The Final Word: Backflow Testing Michigan

Backflow testing Michigan wise or across the US, is a helpful way to prevent contaminants from reaching our water. Here, you’ve not only learned the benefits gained from backflow prevention and keeping up with regular testing of – but the cities in Michigan that require it, too. 

Whether it is required or not, backflow prevention is an environmentally conscious way to protect the earth from contaminants. As more cities and townships require it, it may be best to get ahead of the curve and install your backflow prevention device beforehand. 

Or, if you’re asked to submit backflow testing Michigan results, WaterWork Plumbing can help. WaterWork Plumbing is the premier residential and commercial plumbing provider of Fabulous Ferndale and beyond. 
Brush up on even more educational resources as a homeowner in Michigan with our how-to guides, or call in the professionals for your plumbing repair needs. Contact our helpful and friendly team to schedule an appointment now.