Homeowners in the D.C., Maryland, and Northern Virginia (DMV) region face several water system challenges, from aging infrastructure to frequent storms and strict plumbing codes. However, one often overlooked component when it comes to your home’s water supply is a properly installed backflow preventer. This device prevents contaminated water from entering your home’s clean water lines, especially in areas vulnerable to flooding or municipal line breaks.
Backflow prevention is not only a good idea; it’s generally required by law. Professional installation of a residential backflow preventer helps you remain compliant with local codes, protects your drinking water, and keeps your household safe from harmful pollutants.
John C. Flood has been a trusted plumber in the DMV area for over 120 years. Keep reading to learn more about backflow preventers and our outstanding installation services.
A backflow preventer is a mechanical device installed in your home’s plumbing system that allows water to flow one way into your home. It blocks any reverse flow that could allow contaminants from irrigation systems, storm runoff, or industrial sources to enter your potable water supply.
Without a backflow preventer, sudden drops in pressure can pull dirty water back into your pipes. A working backflow preventer device means that clean water never mixes with contaminated water.
As we touched on earlier, backflow preventers in the DMV area are necessary due to frequent storms and flooding on top of aging infrastructure. In many areas, they’re also required by law.
For Heating, Air Conditioning, Water and Sewer Main Replacements
Cannot be combined with any other offer or discounts. Limited time offer. Coupon must be presented at the time of the initial call. Discounts/promotions cannot be applied.
View More Specials$75.00 OFF
Any Plumbing Service
Minimum of $500.00 job to be applicable. Cannot be combined with any other offer or discounts. Limited time offer. Coupon must be presented at the time of the initial call. Discounts/promotions cannot be applied.
Expires: 09/30/2024
Backflow preventers aren’t “set it and forget it” devices. Over time, their internal parts can wear out, especially when exposed to fluctuating water pressure, freezing temperatures, or the outdoors.
Some signs that you need to replace your home’s backflow preventer include:
If you suspect you need a new backflow preventer, call John C. Flood. The right device depends on your system’s risk level and design. We commonly install the following types of backflow prevention devices:
John C. Flood has over 120 years of experience providing plumbing services for residents in northern Virginia, Maryland, and the District of Columbia. We know the area well, including the municipal codes and how our customers can remain compliant.
We’re respected throughout the community for our reliable service, honest pricing, and fast turnaround time.
Google Reviews
When it comes to residential backflow preventers or any other plumbing needs, make John C. Flood your first call. We guarantee flat-rate pricing 7 days a week, so you never have to pay extra for weekend or evening appointments.
We offer financing options and coupons to help you save money on all our services. Don’t wait until it’s an emergency – contact John C. Flood today for a full plumbing diagnosis of your home’s backflow preventer!
Not all homes need backflow prevention devices, but many do, especially with irrigation systems, pools, or boilers. Local building codes and utility providers often require them to protect the public water supply from contamination caused by cross-connections.
You likely need a backflow preventer if your plumbing system could allow contaminated water to flow backward into the public water supply. Common factors include:
Contact your local water authority to confirm if your property is required to have one.
While you can technically install some simpler devices, like hose bib vacuum breakers, most major assemblies like PVBs, DCAs, or RPZs must be done by a licensed professional. Incorrect installation can lead to system failure and may violate local plumbing codes.
VA Master PLB/HVAC/ELE: 2710010706
VA Class A Contractor: 2705019835
MD Master Plumber/Gasfitter: 24346
MD Master Electrician: 4569
DC Master Plumber/Gas: PGM1002071
DC Contractor License: PC502
©2025 All Rights Reserved. | Sitemap | Privacy Policy