Clean Water Starts Here...
Clean WaterStarts Here...

How it Works: 

At Certified Testing Services of Clark County we eat, sleep, and breathe backflow testing so you don't have to. We know our customers have better things to do than worrying about their backflow testing. That's why we handle the entire process from beginning to end 


All of our tests include:

- Test of the device including any routine maintenance (flushing, cleaning, etc.) required to achieve a passing test. 

- Quick submission of test results to your water supplier and an emailed copy sent to you for your records.

- Emailed invoice with easy-to-use secure online payment link. (You may also mail payment if preferred)

-Due-date tracking and inclusion on our email reminder list each year. NEVER MISS ANOTHER DUE DATE!


To be added to our testing route fill out the form below. You will receive a "Welcome Email" within ONE BUSINESS DAY confirming receipt of this form and then we will be out to test your device. Thank you and we appreciate your business.



City of Ridgefield

City of Camas

City of Vancouver (zipcodes 98663, 98661, 98660, 98662, 98664) 



Schedule a Test:                                        

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You will receive a WELCOME EMAIL within ONE Business Day confirming that you have been Added to a Testing Route and we will be out to Test your device. It will also explain our process. 

P.O. Box 562
Ridgefield, WA



(360) 600-3273



Residential Test Pricing:

City of Ridgefield - $45

City of Vancouver - $55
City of Camas/Washougal - $55

Clark Public Utilities - $55

City of Battle Ground - $55


Schedule for specific day/time begins at $100


Contact us for testing quote on commercial buildings, fire suppresssion systems and areas outside of Clark County



Company Information

Certified Testing Service Inc.

P.O. Box 562

Ridgefield, WA. 98642

BAT #: B6480

Contractors License #: CERTITC830F


Office:  (360) 600-3273

For support email us at


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