Backflow Testing

BACKFLOW

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Protect your Water System from Contamination

If you’ve received a backflow test letter in the mail or are concerned that your backflow prevention device might need to be repaired, you should call a reliable plumbing company right away. Water Doctor of Washington Plumbing Services offers backflow replacement and testing for clients in Southwest Washington.

Now serving Lewis, Thurston, Cowlitz, Clark, and Mason Counties.

What is a Backflow Device?

A mechanical backflow device prevents wastewater from flowing back into your plumbing and up through your sink or toilet, in a process known as backflow.

If your backflow prevention device is damaged, nonpotable water could enter your home, damage your property and contaminate your drinking water. This is why it’s crucial to call a plumber for backflow replacement as soon as you learn there is a problem with your device.

Why backflow testing important?

Since backflow devices are comprised of internal seals, springs, and other moving parts, they can break down or corrode over time. Backflow testing is crucial to ensuring that your device is in working order.

What is backflow?

Backflow is the reversal of water flow from its normal or intended direction. When a customer is connected to a water utility the intention is for water to flow from the water utility to the customer. However, the flow can reverse leading to potentially contaminated water from the customer flowing back into the water distribution system. This situation can be dangerous as it could contaminate the water supply. There are two kinds of backflow, back siphonage, and back pressure.

What is backpressure backflow?

When downstream water pressure exceeds the positive pressure of the incoming water supply then backpressure backflow can occur. Boiler pressure among other things can cause this effect. Proper installation of a backflow prevention device will prevent contamination of the water source from backpressure backflow.

What is back-siphonage backflow?

Back siphonage backpressure is cause by negative pressure or a vacuum created by the supply piping. The effect created is like drinking water through a straw. This can occur when there is a draw on water from the supply line, such as nearby fire-fighting or broken water main.

What can you expect?

Our Certified Backflow Assembly Tester will test your backflow prevention valves. If a valve fails the test, we will repair and retest it. We then file all the paperwork required by the state of Washington.

We can just place you on our worry-free automatic testing schedule whenever you'd like.

Request an Appointment

BACKFLOW TEST REQUEST FORM

Backflow Blog

The Importance of Hiring a Licensed and Certified Backflow Professional

By 7016627896 • February 6, 2023

Backflow contamination is a serious threat to the safety of our water supply. In this blog post, we explore the importance of hiring a licensed and certified backflow professional to ensure that your backflow prevention system is properly installed, tested, and maintained. From compliance with regulations to peace of mind, discover the benefits of hiring a backflow professional and learn why it is crucial to protect your water supply.

Learn how to identify and fix problems with your backflow device to keep your drinking water safe.

How to Know When Your Backflow Device is Not Working Properly

By 7016627896 • January 6, 2023

Backflow devices are critical to protecting your home's water supply from contamination. However, like any plumbing device, they can malfunction or fail. This blog post explains the signs and symptoms of a backflow device that is not working properly, including reduced water pressure, discolored water, and strange odors. You'll also learn about the different types of backflow devices and how they work to prevent backflow. Additionally, you'll get some tips on how to maintain your backflow device and prevent issues from occurring in the first place. Whether you're a homeowner or a business owner, this guide will help you identify the signs of backflow device failure and take the necessary steps to protect your water supply.

Types of Backflow devices

By 7016627896 • November 10, 2022

Backflow devices are essential for preventing water contamination and ensuring the safety of your drinking water. However, with so many types of backflow devices available, it can be challenging to know which one is right for your property. This blog post explains the different types of backflow devices, including the advantages and disadvantages of each, and how they work to prevent backflow. Whether you're a homeowner or a business owner, this guide will help you choose the right type of backflow device for your specific needs and comply with local regulations.

Why does my home need a Backflow Preventer?

November 3, 2022

Backflow is a common plumbing problem that can lead to contamination of your water supply and pose health risks to you and your family. A backflow preventer is a vital device that ensures your water stays safe and clean. This blog post explains why your home needs a backflow preventer, including the potential sources of contamination, the benefits of backflow prevention, and the legal requirements in many areas. You'll also learn about the different types of backflow preventers and how they work. Whether you're a homeowner or a renter, this guide will help you understand the importance of backflow prevention and take the necessary steps to protect your water supply.

Backflow Service Area

Water Doctor of Washington is a local family-owned business that started in 1997 and is headquartered in Chehalis, WA. We proudly serve Washington State with all your Water Treatment and Plumbing needs.

This map indicates our Backflow service area.

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