Water Quality Monitoring

Human actions related to growth, urbanization, and industrialization are placing tremendous stress on water resources. Compounding this stress are risks related to climate change and global water scarcity, which further threaten the long-term stability of water supplies.

As an important measure to help protect waterways and aquatic ecosystems, water quality and water level monitoring can provide data and valuable insights that help scientists and water managers better understand the conditions of water resources and how those conditions change and are affected by development, agriculture, and other activities. Information such as water temperature, water level, dissolved oxygen, conductivity, salinity, pH, and turbidity can be invaluable in helping governments and municipalities control water pollution and make more informed water management and conservation decisions.

Onset provides research-grade data loggers for capturing accurate water quality and water level data. Simple to use, reliable, and easy to deploy, Onset’s data loggers are capable of operating in harsh conditions and a wide range of temperature extremes.

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Water Quality Monitoring Kit

Monitor water temperature, pH levels, dissolved oxygen, ORP or conductivity with ease!

$0.00 (ex gst)

HOBO MX2001 - Water Level Bluetooth Data Logger

The HOBO® MX2001 is the industry’s first water level data logger designed for convenient wireless setup and download from mobile devices via Bluetooth Low Energy.

$0.00 (ex gst)

HOBO MX2501 - pH and Temperature Bluetooth Data Logger

The new low-cost HOBO® MX2501 pH and Temperature logger is designed for long-term monitoring of pH in estuaries, lakes, streams, rivers, and oceans.

$1,516.00 (ex gst)

HOBO U22-001 - Water Temperature Pro v2 Data Logger

The durable HOBO Water Temp Pro v2 has 12-bit resolution and a precision sensor for ±0.2°C accuracy over a wide temperature range. Designed with a durable streamlined case for extended deployment in fresh or salt water.

$275.00 (ex gst)

HOBO U26-001 - Dissolved Oxygen Data Logger

The HOBO U26 Dissolved Oxygen Logger is a highly precise, low-cost data logger for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters. Used by aquatic biologists, hydrologists, and other research professionals, the HOBO U26 combines the high accuracy, robust performance of industry-leading RDO® Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design.

$2,765.00 (ex gst)

HOBO U24-001 - Conductivity/Salinity (Fresh Water) Data Logger

The HOBO U24 Conductivity Logger is a high-accuracy, cost-effective water quality data logger for measuring conductivity and temperature in streams, lakes, and other freshwater sources

$1,720.00 (ex gst)

pHionics STs DO (Dissolved Oxygen) Sensor with 4-20mA

The pHionics STs Series™ Dissolved Oxygen sensor accurately measures dissolved oxygen (0-20 mg/L or percent saturation) and temperature (0-50°C) over long periods of time with little maintenance required.

$2,592.00 (ex gst)

pHionics STs ORP (Redox) Sensor with 4-20mA output

The pHionics STs Series™ ORP sensor provides reliable ORP (redox) and temperature measurements to a datalogger, RTU, PLC, or SCADA system for continuous water quality monitoring.

$1,985.00 (ex gst)

pHionics STs pH Sensor with 4-20mA output

The pHionics STs Series™ pH sensor provides accurate pH and temperature measurements from 0-14pH to a datalogger or RTU for continuous water quality monitoring.

$1,883.00 (ex gst)

pHionics STs Conductivity Sensor with 4-20mA output

The pHionics STs Series™ Conductivity is a water quality sensor designed to pair with a datalogger or RTU for real-time data capture.

$2,329.00 (ex gst)

Water Quality Monitoring

Water Quality Monitoring

Top Products ↓ Resources View all Data loggers

Water Quality Monitoring Kit

HOBO MX2001 - Water Level Bluetooth Data Logger

HOBO MX2501 - pH and Temperature Bluetooth Data Logger

HOBO U22-001 - Water Temperature Pro v2 Data Logger

HOBO U26-001 - Dissolved Oxygen Data Logger

HOBO U24-001 - Conductivity/Salinity (Fresh Water) Data Logger

pHionics STs DO (Dissolved Oxygen) Sensor with 4-20mA

pHionics STs ORP (Redox) Sensor with 4-20mA output

pHionics STs pH Sensor with 4-20mA output

pHionics STs Conductivity Sensor with 4-20mA output

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