Welcome to Napa Valley Backflow Testing & Repair
Please try again in 2025
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We are now excepting electronic payments through
 Find us at nvbackflow. Get Venmo from The Google Play Store or Apple App Store 
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Now Serving Yountville!
Napa Valley Backflow Testing & Repair provides testing, repair and installation services for all types of backflow preventers in Napa, Yountville, Saint Helena and American Canyon. We pride ourselves on our excellent service, knowledgable technicians, low pricing and prompt service. We are A+ certified with the Better Business Bureau and are proud to serve the beautiful Napa Valley.
AWWA License: #14456
AWWA License: #16720
Napa Valley Backflow Testing & Repair Provides:
- Friendly office support
- Easy test request system
- Fast, efficient testing to minimize downtime
- Friendly, knowledgeable technicians
- Fast response to breaks and leaks
- We file all the paperwork
- We work closely with the city water departments
- We offer yearly testing cycles
- We minimize all actions needed by customer
Quick FAQ's
What exactly is backflow anyway?
Backflow is the undesirable reversal of water in a customers water system back into the city water supply. Once the water passes through your meter, the city doesn't want it back.
Backflow is the undesirable reversal of water in a customers water system back into the city water supply. Once the water passes through your meter, the city doesn't want it back.
What's a backflow preventer?
A backflow preventer is a mechanical device, containing check valves that close when the pressure in the city water supply drops, thus preventing the reversal of water.
A backflow preventer is a mechanical device, containing check valves that close when the pressure in the city water supply drops, thus preventing the reversal of water.
Why do I need an annual test?
The state of California, per Title 17, requires an annual test of all backflow preventers by an A.W.W.A certified tester. Any structure built after 1987 must have a backflow preventer.
The state of California, per Title 17, requires an annual test of all backflow preventers by an A.W.W.A certified tester. Any structure built after 1987 must have a backflow preventer.
Our Services
Backflow Testing
We test all sizes, types and locations of backflow preventers. From 1/2" to 10" monsters, we get them all certified in Napa, Yountville, Saint Helena and American Canyon.
Backflow Repairs
We provide repairs on all types of backflow preventers at very affordable rates. Compare our estimates with other companies and see.
Backflow Installs
If you need a residential or commercial backflow preventer replaced call us today to get a quote. We urge you to compare our pricing to others.
How To Pay
We accept all major credit cards, personal checks and Venmo. We do not process credit/debit cards on our website. If you would like to pay via credit/debit card you can call our office and we will process it over the phone. We do not keep card information after payment. Under normal circumstances, if you are on our yearly cycle, we leave a self-addressed envelope containing your personal copy of your test report and an invoice for you to mail back with your check.
Paperless Options
Venmo is an app for smart phones and computers that provides a secure payment system similar to PayPal.
You can downlowd and install Venmo
from the Google Play Store for Android devices or Apple App Store for iOS devices. Here are the links:
If we have your email on file we can email you your Intuit Quickbooks invoice directly from Napa Valley Backflow. This is an
excellent way to pay to quickly and securely. Any debit/credit card transactions are completed on Intuits's
secure payment platform.