Andy's Backflow Testing (Andy Joslin) has been testing our sprinkler backflow valve for about 30-years, both in his own company, and as an employee of his Father's company (Oregon Backflow, Dave Joslin, now retired). This year, our required testing cost a very reasonable $40 (July, 2025). I wholeheartedly recommend him, he has been accurate, timely, dependable, and very accommodating and easy to work with. One more thing, as a South Salem homeowner, I do not have to worry about. Five Stars, should be Ten. read more