Here, the inspection is a requirement for "commercial" installations only, not residential. Start adding a couple of hundred dollars to each installation, and you will end up with hundreds of homeowners doing it themselves. Either not using a backflow device or using the cheapest one they can find even if it is not the proper one for their application.
hj, one of the problems that I see is that you are using the Arizona Cross Connection Control (CCC) standards as being the CCC standards for the global community that reads this forum. Arizona is in the minority when it comes to allowing residential water customers to not need a backflow device tested.
The OP to this thread needed repair advice. Part of the correct answer should also have been to have the repaired device tested by a certified backflow assembly tester. By not providind that notice you may have exposed readers to possible liability, fines, and prosicution. Just because you live in an area (Arizona) that does not require residential backflow assembly testing, doesn't mean that other parts of the planet don't require testing.
http://www.cdphe.state.co.us/regulations/wqccregs/100301primarydrinkingwater.pdf
COLORADO PRIMARY DRINKING WATER REGULATIONS
12.1 Control of Hazardous Cross-Connection
(a) A public water system or a consecutive distribution system of a public water system shall have no uncontrolled cross-connections to a pipe, fixture, or supply, any of which contain water not meeting all applicable provisions of the Colorado Primary Drinking Water Regulations.
(b) A supplier of water shall protect the public water system from contamination in the following manner:
(1) Identify potentially uncontrolled hazardous service cross connections.
(2) Require system users to install and maintain containment devices on any uncontrolled hazardous service cross connections, provided the Department has determined that the device is consistent with the degree of hazard posed by the uncontrolled cross connection.
(3) Installation of containment devices shall be approved by the public water system upon installation.
(4) All containment devices shall be tested and maintained as necessary on installation and at least annually thereafter, by a Certified Cross-Connection Control Technician.
(c) Public water systems shall retain maintenance records of all containment devices. Section 1.6.3 requires these records to be available for inspection by Department personnel. All maintenance records shall be kept for three years.
(d) A public water system shall notify the Department of any cross-connection, as defined in section 1.5.2(29), within 10 calendar days of its discovery. The cross-connection shall be corrected within 10 days of being ordered in writing by the Department to correct the problem. Failure to do so may result in an enforcement order.
(e) Violations shall be subject to the provisions and penalties prescribed by sections 25.1.114 and 25.1.114.1, Colorado Revised Statutes, and to such other actions as provided by law.
In Colorado, those that maintain a cross connection, or have knowledge of a cross connection are guilty of a crime as defined in CRS 25-1-114(h) and may also be subject to civil action as defined in CRS 25-114.1. The Colorado Department of Public Health & Environment has issued a new version of the Colorado Primary Drinking Water Regulations that provides for the implementation of cross-connection control programs by public water suppliers in Colorado.
Mick