Founded in 1992 on the premise that precision water velocity measurement should be practical, affordable, and easy, SonTek today offers the widest variety of acoustic Doppler instrumentation on earth.

Simply put, our instruments use sound waves to tell you how fast water is moving, where it is moving, and even if it is not moving at all. Our customers are scientists, engineers, hydrologists, research associates, water resource planners and anyone that needs to collect velocity (speed) data in every kind of body of water imaginable. Our products could be as easily found in a university laboratory as they could in the deep ocean, along the coast, or in a river, lake, or stream. From the depths of the Pacific Ocean, to the Amazon River, to the small creek in your backyard, there are SonTek instruments hard at work every day.

SonTek is now a part of Xylem, a leading provider of fluid technology and equipment solutions for the planet's most challenging water issues.