Application field

Waste Water

ColiMinder™ is a real-time online wastewater monitoring system.
It is able to monitor faecal contamination level of wastewater, providing a result in 15 minutes.

Efficiency in process control by online e.coli monitoring

Wastewater processes are the largest water treatment processes with disinfection efforts involving a huge amount of chemicals and energy. In wastewater treatment, contamination levels also show extreme diurnal variations.

There is a huge potential of savings through adopting the disinfection intensity to the actual contamination, as monitored by the ColiMinder.

The ColiMinder has proven capability to measure faecal contamination in wastewater treatment processes, , providing results within 15 minutes, regardless of the contamination level.

It is insallted all over the globe for

  • Monitoring fecal contamination of wastewater effluent
  • Monitoring contamination level before/after disinfection to control process performance
  • Controlling any step of wastewater treatment process, especially during contamination events such as CSOs.

How does it work?

The ColiMinder measures the specific metabolic (enzymatic) activity of the target organisms present in the sample.

The measured value provides information about the energy turnover of living organisms in the sample. Living organisms need energy, which they gain through their metabolism, so the metabolic activity reflects the energetic turnover of the existing microorganisms. The measured activity directly indicates the faecal contamination level of the water.



How did it prove reliability?

The ColiMinder’s performance, reliability, stability and robustness have been evaluated, validated and proven in several scientific studies as well as in many customer applications all around the globe.

The results of technology validations by universities have been published in several peer reviewed scientific publications. E.g. in a scientific comparison study on Online microbial monitoring of drinking water: How do different techniques respond to contaminations in practice?, conducted by the University of Ghent and published in Water Research Journal, the ColiMinder was the only device to detect 100% of all contaminants in a national drinking water network

Internal validations are conducted regularly and form a part of our quality management.

The ColiMinder has proven that it can fully map the microbiological water quality of drinking water and is perfectly able to measure all kinds of contaminations, even if it was on the lowest level.

Please ask us for further information!

Can I do compliance testing with the ColiMinder?

The ColiMinder provides operational monitoring, as recommended e.g., by the WHO. It helps our customers to achieve the goals set out in compliance regulations by real-time monitoring of microbial contamination, enabling quick reaction on probable contamination events. It does not replace compliance testing. 


Receive real-time warning

In case of contamination events

Monitor your process performance

In order to increase process efficiency, safety and sustainability

Learn more about your process

The result timelines (microbiological activity & turbidity) carry important
additional information about the dynamics of your system

Safeguard your water quality

during production as well as in storage facilities and distribution networks

Scan your distribution network quickly

in case of microbiological contamination events, to identify source of contamination

Avoid overdosing

Adjust disinfection intensity to actual contamination



Austrian municipal drinking water production from groundwater well: the ColiMinder monitoring at raw water intake and after activated carbon filtration.


The metropolitan drinking water R&D plant of the City of Seoul, Korea, using the ColiMinder to evaluate performance of two different activated carbon filtration columns


De Watergroep’s national drinking water network, Belgium: the ColiMinder is monitoring microbiological contamination level in semi final drinking water.


The ColiMinder down under: in Unitywater’s drinking water network, it is safeguarding microbial quality of final drinking water, installed at remote BliBli reservoir.

Result timeline of a drinking water production

sample 1 (black) monitoring raw water intake and sample 2 (green) after activated carbon filtration

ColiMinder use cases

proven by customers!

The ColiMinder bacterial analyzer can be installed at any stage of a drinking water production process for real-time monitoring of microbiological contamination.

River bank filtration wells

Flocculation process

Groundwater wells

Disinfection process

Raw water intakes

Distribution network

Any type of filters

Storage tanks

DOWNLOAD White paper

Several White Papers on Drinking Water measurements provide further in-depth information about drinking water measurements with the ColiMinder.

9 + 10 =


The ColiMinder™ had proven its reliability and stability in various drinking water applications world-wide


Austrian municipal drinking water production from groundwater well: the ColiMinder monitoring raw water intake and after activated carbon filtration in alternating mode.

Quick live introduction