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Coastal & Estuary
Flow & Discharge
Flood Warning
Groundwater
Meteorology
Surface Water
Nutrient Monitoring
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NEW: AQUARIUS

Water monitoring agencies worldwide trust AQUARIUS to acquire, process, model, and publish water information in near real-time.

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Discount on OTT SVR 100

The OTT SVR 100 is the ideal non-contact sensor for measuring open channel flow, and we are now offering it at a discounted price in our latest promotion.

To the offer

OTT UV Nitrate Sensor

The OTT ecoN can transmit data via SDI-12 interface due to the new OTT ecoN Modbus to SDI-12 Converter.

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OTT CAST: Let's Talk About The Weather

No Trade Shows? Welcome to our new podcast series instead! Register to get free access to three 20-minutes episodes.

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NEW: ISE sensors for the HL Series

The Ion Selective Electrode sensors for Ammonium, Nitrate or Chloride are used for attended monitoring and qualitative monitoring programs

Discover the ISE's now

NEW: OTT ecoLog 1000 Water Level Logger

Introducing the new self-contained, cellular groundwater level logger for measuring water level and temperature.

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An Introduction to AQUARIUS

It's not as simple as just collecting water data and making decisions, there's much more to your job. Meet AQUARIUS, the world's leading software platform for water data management.

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Discover our project overview

You are looking for OTT HydroMet references to inform yourself about implemented projects? You find them on the project overview!

To the project overview

NEW: The OTT HydroMet Blog

Now, we’re ready to launch our new OTT HydroMet Blog. There you find, as usual, interesting and astonishing stories from the hydrological community as well as news about the broad product portfolio by OTT, Hydrolab, and Sutron.

To the OTT HydroMet blog