We test residential and commercial backflow (rpz) valves online to irrigation systems and domestic water supply. We
do not test valves online to fire systems. Krupske Sprinkler Systems is an Illinois licensed plumbing contractor with 3 licensed
llinois Cross-Connection Control Device Inspectors (CCCDI). Backflow tests can be scheduled online or by calling
our office at (815) 464-6801.
The Illinois Plumbing
Code requires that a backflow prevention device be installed on all (Commercial and Residential) irrigation systems to protect
the potable water supply. The law not only requires the use of backflow prevention devices, but also that the devices be tested
once per year.
Both Agency regulations, 35 Ill. Adm. Code
653.802(e)(1), and the Plumbing Code, 77 Ill. Adm. Code 890.1130, require testing of the backflow assembly at the time of
installation and at least annually thereafter. Also, while any Illinois licensed plumber can inspect plumbing or install a
backflow device or assembly, only licensed plumbing contractors certified as Illinois Cross-Connection Control Device Inspectors
(CCCDI) can test that device or assembly.
Some backflow valves
are mounted inside the home; however, most valves online to irrigation systems are mounted outside. If a drop in city
or building water pressure occurs, the RPZ valve will open up, dumping water out at a rate of up to 40 gallons per minute
for a 1" standard irrigation valve rather than allowing the potentially contaminated water to back-flow into the water
supply. This is why we mount our irrigation valves outside unless a municipality requires that the valve be mounted inside.