Aquatek Plumbing is a full service plumbing company in San Jose, California. Its listing covers repiping, repairs, inspections and maintenance, and adds backflow certification and repair.
Backflow prevention testing is separately certified work in California, and plumbing contractors are licensed through the Contractors State License Board.
The address on record is a post office box rather than a street location, so this is a company to reach by phone rather than to call on.