Services
Backflow tester names come from city lists. Extinguisher and sprinkler pages explain the work and where licensing is published. They do not add companies that were not on an imported roster.
Backflow testing
A backflow prevention assembly is tested to show it still stops water from reversing into the public supply. The launch cities publish who may submit those tests.
Fire extinguisher inspection
Portable fire extinguishers are a different license from a backflow test. This site does not yet list extinguisher companies, because no official city roster was imported.
Fire sprinkler inspection
Fire sprinkler systems are inspected on a fire-code schedule. A backflow assembly on a fire line is often tested from the same property, but the city backflow list is not a sprinkler-license list.