SonTek's Sound Principles. Good Advice.

SonTek has been around since September 1992, and has worked to advance environmental science in over 100 countries by manufacturing affordable, reliable acoustic Doppler instrumentation for water velocity measurement in oceans, rivers, lakes, harbors, estuaries, and laboratories.

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.

Employees bring a broad range of applications expertise with a strong focus on finding local solutions to the world’s most challenging water problems. Our motto "Sound Principles. Good Advice." represents a culture of collaborative relationships with our customers and the broader water monitoring community.

SonTek is located in San Diego, California and is a brand of Xylem Inc. Learn more at

We're always here to help! Contact us at or +1.858.546.8327.