YSI, a Xylem brand

Yellow Springs, US 45387


About YSI, a Xylem brand


Yellow Springs, US 45387

More Info on 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.

Products & Press Releases

YSI IQ SensorNet Monitoring WWTP Tank
Utility Management

Digital Multiparameter System

April 3, 2018
The new digital-based IQ SensorNet 2020 XT is an ideal modular solution for online water quality instrumentation, for continuous monitoring and control. This instrument is a digital...

Articles & News

Case Studies

Monitoring the Water Quality of the Thames

Sept. 14, 2021
The water quality of the River Thames has affected the activities of mankind for centuries. In 1858, Parliament was suspended because of a stench arising from pollution in the...
Utility Management

How To Measure With ISEs

Sept. 2, 2016
Best practices for obtaining reliable ammonium & nitrate concentration measurements from online ISE sensors
Scioto Reserve Anoxic Zone
Utility Management

Fine Tuning Plant Processes

May 4, 2015
Online monitoring enables Ohio wastewater treatment plants to achieve compliance
App_WWTP-WM_Aeration_basin_2013 copy

Controlling Dissolved Oxygen

Sept. 10, 2014
Controlling the most common target for aeration system optimization
YSI IQSN Tech Review W&WD
Tech Reviews

Instrumentation Offers Easy & Efficient Process Monitoring

May 1, 2013
YSI introduced its new digital based IQ Sensor Net 2020 XT. The 2020 XT is a modular solution for online water quality instrumentation designed for monitoring and control of wastewater...
YSI EXO1Handheld
Tech Reviews

Multiparameter Sondes Operate in Challenging Environments

March 29, 2013
Sondes are ideal for use in rivers, streams & reservoirs, as well as source water, storm water & drinking water applications
Case Studies

The Unhealthy Greening of Maine’s Casco Bay

June 25, 2008
When it rains in Maine, dangerous chemicals run off the ground and into the clamflats and beaches of Casco Bay. Volunteers and staff from Friends of Casco Bay (FOCB), a nonprofit...
Case Studies

Tracking Water Quality

April 9, 2008
Nestled among the foothills of the Sierra Nevada mountain range, the Pardee reservoir is 100 miles from San Francisco Bay. But this outpost is the crucial origination point for...
Case Studies

Gathering Comprehensive Water Quality Data

Feb. 21, 2008
Robert M. Ellisonundefined Ferries crossing the Neuse River and Pamlico Sound on regular routes have been equipped with a water quality monitoring system for continuous collection...
Case Studies

Unattended Water Quality Monitoring Protects Water Supply at Taiwan Reservoir

Sept. 28, 2007
The steep 1,600-ft peaks and dramatic canyons that have made the Shimen Reservoir one of Taiwan's popular tourist attractions are the products of massive erosion – erosion that...

All content from YSI, a Xylem brand

Case Studies

Monitoring Wastewater Treatment Facility Efficiency and Effluent Quality

July 5, 2007
Ron Schuyler of RTW, Inc. approaches waste treatment from a holistic perspective, and regards wastewater treatment facilities (WWTFs) as complex living systems. The Bug Doctor...
Case Studies

Simpler Water Intake Monitoring System Reduces Frequency of Site Visits

May 2, 2007
Darren Hanson, YSI Hydrodataundefined Until recently, drinking water utility managers have relied on traditional, wall-mounted systems to monitor water quality upstream of extraction...
Case Studies

Mecklenburg County Finds a Solution to Water Quality Problems

March 21, 2007
Steve Werblow, Freelance Writer for YSI Inc.undefined With more than 500 sq miles to cover, including a network of streams flowing through a handful of towns and dozens of active...
Case Studies

Optical DO Sensors Improve Microbial Efficiency at Wastewater Treatment Plants

Dec. 7, 2006
Dissolved oxygen (DO) monitoring in wastewater is critical for efficient operation of wastewater treatment plants. Continuous and reliable DO monitoring can improve plant efficiency...
Case Studies

Water Quality Monitors Protect Rivers During Drought

Oct. 19, 2006
Graham Mellor for YSI Hydrodataundefined Due to the drought in the southeast of England during 2005 and 2006, the Environment Agency has allowed increased water abstraction from...
Case Studies

Monitoring Network Protects International Aquaculture Investment

Aug. 17, 2006
The driving force in the aquaculture industry worldwide is the growing demand for humans to have a healthy food source. Aquaculture is the term used for the cultivation, or “...
Mead profiler1
Case Studies

Monitoring and Protecting Water Quality in Lake Mead

June 22, 2006
Lake Mead was formed following the completion of Boulder Dam (now called Hoover Dam) in 1935. At the time, it was the largest artificial lake in the world. However, due to increases...
Case Studies

Ambitious water quality study could guide development for years

April 19, 2006
Eric Gurr, the city’s storm water utility manager, has designed a water quality study on a grand scale. He’s identifying the waterborne pollutants that enter and leave his city...
Case Studies

Building A Baseline in Florida

Feb. 23, 2006
The Florida Department of Environmental Protection (DEP) knows that establishing dissolved oxygen (DO) and nutrient criteria for the state’s water bodies is a challenge – both...