Water quality

How to measure water pollution in order to reduce harmful effects on humans and the environment

Why water quality is important

According to UNICEF, four billion people - almost two-thirds of the world's population - do not have enough drinking water for at least one month a year. And more than two billion people live in countries where the water supply is permanently inadequate.

Often these are regions with high water pollution. At the same time, awareness of health issues is steadily increasing worldwide. These aspects are leading to ever increasing demands for good water quality.

To ensure that water is of good quality, it must be permanently monitored. This is achieved by means of sensors. An important indicator of water quality is its total organic carbon (TOC) level. Consequently, in the future TOC sensors will make a significant contribution to achieving better water quality in various markets and applications, such as in appliances, waterworks and bioreactors.

Water Pollution

Water pollution is a huge problem today. But through monitoring the quality of various natural waters and drinking water, harmful effects on the environment and human health can be reduced and the efficiency of drinking water treatment optimized.

To achieve this, various guidelines laid out in official ecological and drinking water quality regulations must be fulfilled. The requirements for process engineering and water quality control are increasing.

Reliable measuring stations that continuously supply data are therefore an essential component for dynamic process control and continuous monitoring of water Quality.

Water quality sensing: our sensor solutions

An important parameter for measuring water quality is the TOC level, which is the amount of carbon contained in an organic compound, i.e. a measurement of all organic contaminants in water. Therefore, TOC is often used as a non-specific indicator of water quality or the cleanliness of pharmaceutical production facilities.

TOC sensor

TOC sensors detect harmful pollutants, such as benzene and antibiotics, and industrial pollutants, such as pesticides, detergents, plastics and solvents. At the same time, the sensor also detects harmless pollutants, such as organic substances from algae or leaves.

  • Optimizes filter life-time
  • Demonstrates to your customer the value of their product
  • Collects water quality data
  • Helps differentiate products from the competition
  • Enables better understanding of local customers’ needs
  • Provides real-time water quality information
  • Creates alerts for severe contamination Events
  • Monitors the lifetime and performance of filters
Water quality trends

Filtration systems

The number of residential water filtration systems in use are on the rise. People want to monitor water at the point of use.

Online monitoring

The online monitoring of different water quality parameters optimizes cleaning processes and reduces costs.


Digitalization enables online monitoring at multiple points of the distribution network.

Real-time data

The desire to collect real-time data is causing an increase in online monitoring of water. This in turn increases measurement accuracy and allows authorities to act quickly in the case of an emergency.

Per- and polyfluorinated substances

Investments in clean water and drinking water are increasing worldwide, including in the monitoring and remediation of per- and polyfluorinated substances (PFAS)


In the pharmaceutical industry regulations are very strict and quality level needs to be high. In water management standards of maximal concentration of contaminants are provided by the government. There is no clear test procedure mode.

How to improve water quality?


High-end water purifiers and water dispensers provide the user with confirmation and thus assurance that the water is safe to drink. A TOC sensor installed after the filter stage monitors whether the filter is working.

Waterworks and Wastewater

Treatment of wastewater in local waterworks ensures that water is safe for the environment and healthy to humans.


Devices that support biologically active environment to produce biological material on a large scale.



“Reliable monitoring stations that provide continuous data are an essential component of drinking water supply and environmental protection – both for dynamic process control as well as for continuous monitoring of water quality.”

World Health Organisation (WHO)

“No WHO health-based guideline value has yet been established. TOC is an indicator of organic matter, particularly in raw water. TOC is a useful operational water quality parameter to indicate change.”

World Health Organisation (WHO)

Applied sensing solutions

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