The following backflow assembly testing companies which have been verified by City of Chandler Water Quality as holding an active Registrar of Contractors license and insurance coverage.
| Company | City | Phone |
|---|---|---|
| 4 Peaks Fire Protection, LLC | Tempe | 480-284-0468 |
| 5 M Construction LLC | Gilbert | 602-803-5780 |
| AAA Backflow Testing & Repair | Surprise | 480-837-8206 |
| ABC Water Works Inc | Mesa | 480-753-5849 |
| ACS Inspection Services LLC | Peoria | 623-556-9580 |
| Aero Automatic Sprinkler Co | Phoenix | 623-580-7802 |
| Allied Fire Protection Inc | Mesa | 480-830-4163 |
| American Backflow & Fire Prevention | Peoria | 480-630-1610 |
| Andrew's Service Inc | Scottsdale | 602-992-9560 |
| AP Fire Protection LLC | Glendale | 623-772-5344 |
| Apex Landscape Management, LLC | Chandler | 480-857-2621 |
| Armor Fire Protection, Inc. | Gilbert | 480-633-5922 |
| Arrowhead Superior Refigeration Services | Peoria | 602-368-5191 |
| Atlas Fire Co LLC | Glendale | 602-688-4964 |
| AZ Fire Protection | Glendale | 602-607-8302 |
| Backflow Paradise Inc | Glendale | 623-297-9703 |
| Backflow Prevention Device Inspections, Inc | Phoenix | 602-788-5411 |
| Backflow Technologies | Rio Rico | 520-313-5392 |
| Benson Systems | Tempe | 480-892-8688 |
| BPS Inc | Phoenix | 602-361-4719 |
| Brightview Landscape Services Inc | Gilbert | 480-545-0456 |
| Brush Fire & Security Inc | Mesa | 480-892-1246 |
| Canyon State Fire Equipment | Queen Creek | 480-208-0304 |
| Caretaker Landscape Management | Gilbert | 602-620-5599 |
| CertiPro Fire & Life Safety | Mesa | 480-829-7600 |
| Cintas Fire Protection | Phoenix | 623-245-0636 |
| City Wide Plumbing & Service Co | Tempe | 480-966-8795 |
| Collins Commercial Services | Scottsdale | 480-277-9604 |
| Competitive Backflow LLC | Peoria | 480-286-3690 |
| Complete Fire Protection Inc | Queen Creek | 480-987-8200 |
| Contractor Fire Protection Inc | Mesa | 480-539-3323 |
| Cure All Plumbing | Gilbert | 480-895-5858 |
| Desert State Fire | Mesa | 480-264-3763 |
| DLC Resources | Phoenix | 602-300-8396 |
| Dust Devil Plumbing Inc | Glendale | 602-618-4043 |
| Farnsworth Piping LLC | Mesa | 480-290-1077 |
| Firehouse Solutions LLC | Mesa | 833-347-3473 |
| Fireshield Services LLC | Mesa | 888-540-7632 |
| Firetrol Protection Systems | Tempe | 480-294-6970 |
| Galaxy Fire Protection | Phoenix | 602-490-9797 |
| Greenway Technologies | Phoenix | 602-478-7313 |
| Guardian Fire Protection | Gilbert | 602-526-6022 |
| Halo Fire Protection | Mesa | 480-325-2280 |
| Industry Standard Fire Protection LLC | Peoria | 480-798-1871 |
| Innovative Plumbing | Glendale | 602-228-9094 |
| JAZ Backflow Prevention LLC | Scottsdale | 480-675-9237 |
| Johnson Controls Inc | Tempe | 866-854-4544 |
| JR Holmes Backflow Prevention | Paradise Valley | 480-907-7428 |
| Matrix Fire LLC | Gilbert | 480-805-9005 |
| Metering Services Inc | Tempe | 480-894-0200 |
| Metro Fire Equipment Inc | Gilbert | 480-464-0509 |
| Mountain State Fire Protection | Mesa | 480-716-8900 |
| National Fire Control | Mesa | 480-967-5705 |
| Nuflow Fire Protection LLC | Surprise | 602-879-2143 |
| NV Solutions | Litchfield Park | 602-319-8817 |
| Olympic West Fire Protection | Tempe | 480-968-9634 |
| Out West Fire Specialist LLC | Goodyear | 480-234-1092 |
| Pass Fire Protection, LLC | Phoenix | 505-389-9556 |
| PM Plumbing & Mechanical Inc | Mesa | 480-844-2892 |
| Procheck Inc | Glendale | 602-527-9113 |
| RCI Systems Inc | Mesa | 480-894-8711 |
| Saguaro Fire Protection | Queen Creek | 480-250-7207 |
| Sea Bass Plumbing LLC | Gilbert | 702-425-0973 |
| Septon Development Group | Scottsdale | 480-235-8529 |
| Service 1st Fire Protection | Phoenix | 623-582-3369 |
| SLP Alliance Trade Services LLC | Phoenix | 602-705-2369 |
| Southwest Integrated Solutions | Glendale | 623-322-5088 |
| Summit Fire Protection Co | Tempe | 831-239-8873 |
| Superstition Fire Protection | Mesa | 480-830-6132 |
| Titan Alarm Inc | Phoenix | 602-680-4567 |
| Trade Wind Mechanical & Plumbing Inc | Phoenix | 602-675-0466 |