Hach Environmental

The Hach Environmental group of companies provides advanced water measurement technologies used in oceanography, hydrology, meteorology, and wastewater flow monitoring.


OTT Hydromet

OTT Hydromet helps water resource professionals generate reliable data throughout the entire environmental water cycle.

Our solutions focus around:

  • Water quality: Hydrolab multiparameter sondes for attended and unattended measurement of popular water quality parameters
  • Water level: OTT water level sensors with diverse measurement technologies designed for a variety of surface and groundwater applications
  • Water flow and discharge: portable and stationary current meters for discharge measurement in rivers and streams, using acoustic, electromagnetic, and mechanical technology
  • Precipitation: ultra-high accuracy rain gauges and weather sensors with low power consumption for remote usage


Hach Flow Products & Services

Hach Flow Products and Services, including legacy brands Sigma and Marsh-McBirney, is a business unit of Hach Company and has a proven track record of creating industry-leading innovations in open-channel wastewater flow measurement applications. Hach Flow empowers customers with accurate and timely flow data so they can make critical wastewater flow decisions with absolute confidence. From state-of-the-art wireless flow loggers and industry-pioneering non-contact flow sensors, as well as groundbreaking Data Delivery Services (DDS), Hach Flow is committed to providing flexible solutions to deliver good flow data in every open-channel wastewater application.


Sea-Bird Scientific

Sea-Bird Scientific (link goes to the Bellevue product site) combines unprecedented capabilities in providing best-of-class tools for monitoring of physical and biogeochemical variability in blue ocean waters. Sea-Bird Scientific is comprised of Sea-Bird Electronics (Bellevue, WA), WET Labs (Philomath, OR), and Satlantic (Halifax, NS). Today Sea-Bird Scientific employs over 200 people in the US, Canada, and Europe in development, manufacturing, calibration, sales, and support of our products.