YSI, a Xylem brand
YSI provides monitoring equipment and services to governments, universities, and private organizations whose goal is to make the best use of natural resources. Products include: Multiparameter sondes for unattended monitoring and profiling of water quality; Multiparameter instruments for sampling water quality; Acoustic Doppler meters for measurements of velocity, tides, and currents; Buoys with full array of monitoring instrumentation, data acquisition systems, and meteorological sensors. Our trusted solutions help water resources professionals - throughout the aquaculture, coastal/estuaries, drinking water, ground water, storm water, and surface water industries - obtain the quality data needed to make informed decisions about critical projects.


1725 Brannum Lane
Yellow Springs, OH 45387
United States
Phone: 937-767-7241
Fax: 937-767-9353

Product Categories

Instrumentation, BOD; Instrumentation, Dissolved Oxygen; Instrumentation, Water Quality Monitoring; Multiparameter Sensors; Sensors, Dissolved Oxygen


Are you planning to upgrade your current water/wastewater facilities in the next year?:
Between drought, algae, deteriorating infrastructure and increased regulatory scrutiny, the demands... more
Associations in the water and wastewater industry are accustomed to monitoring and advocating for... more
Time is running out. Every year, Water & Wastes Digest supports future water and wastewater... more
As Eleanor Roosevelt once quipped, “Great minds discuss ideas; average minds discuss events; small minds discuss people... more
New ideas such as a waterless car wash can be helpful in times of drought
I am an eternal optimist. Some people who know me and work with me may not always agree, but I am. I think this has to... more
Utilizing incentives to alleviate aging infrastructure & workforce concerns
As a former U.S. Environmen­tal Pro­tection Agency (EPA) water official, I am often asked to talk about... more
Email Subscriptions