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 worrrying about their backflow testing. That's why we handle the entire process from beginning to end.


Our standard residential tests are $45.00. For that price we will test the device, generate the required test report, and send an official copy directly to your water supplier.  You will also receive a report copy for your records with your invoice for the year.


As an added convenience we will add your home to our priority routes for the following year. You will receive a courtesy reminder card  about a month before your test is due.

 Schedule a Test:

by Phone at:

Office: (360) 600-3273


or Online Using the Form Below:


You will receive a Welcome confirmation email within 1 business day. 

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P.O. Box 562
Ridgefield, WA


(360) 600-3273
(360) 857-8730

WA. Contractors Lic. #:



Always Use a Licensed and Insured Contractor!

Company Information

Certified Testing Service Inc.

P.O. Box 562

Ridgefield, WA. 98642

BAT #: B6480

Contractors License #: CERTITC830F


Office:  (360) 600-3273
Mobile: (360) 857-8730

For support email us at


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