EM-2Q

Wireless Water Quality Monitoring Solutions

Environmental monitoring is crucial in combating pollution in surface water — rivers, lakes, reservoirs and coastal waters. Global initiatives like the UK Environment Act 2021 are driving the need for robust, continuous, wireless monitoring. EM-2Q delivers it.

Global Need

A pressing issue for surface water everywhere

Global water quality monitoring across rivers, lakes and coastal waters

Globally, surface-water quality monitoring has become urgent as pollution rises in rivers, lakes and coastal waters. Effective monitoring is the first step in implementing quantifiable improvement programmes aimed at combating pollution.

Continuous data collection is essential for understanding pollution patterns, implementing mitigation strategies, and ensuring compliance with environmental regulations — the ability to deploy robust monitoring systems in environmentally sensitive and remote areas is critical.

The EM-2Q Advantage

Built for the realities of the field

01

Rapid Deployment

Wireless architecture enables quick, easy deployment of integrated sensor packs near the riverbed — eliminating the need for extensive riverbank or shore infrastructure.

02

Reliable Communication

Patented Electromagnetic Field Signalling (EMFS) ensures dependable data transmission from submerged sensors to topside devices — even through ice, ground and turbid water.

03

Minimal Environmental Impact

Designed to be environmentally friendly and non-disruptive: systems stay out of sight and out of the way, with no adverse effects on aquatic life.

04

Flexible Integration

Easily integrates with multiparameter sondes and a range of sensor packs. The topside EM-2 gateway can be placed up to 100m away for flexible siting.

How It Works

From riverbed sensor to the cloud

CSignum EM-2Q wireless water quality monitoring — data travelling through ice, water and ground to a topside EM-2 gateway and the CSignum Cloud, with drone and portable data recovery.
Rivers · Reservoirs · Coastal

Continuous water quality, captured wirelessly

From combined sewer overflows to under-ice conditions — EM-2Q delivers real-time data from the places that matter most.

Applications & Benefits

Three ways to recover your data

Continuous Monitoring

Real-time data for compliance with regulations such as the UK Environment Act 2021. EM-2Q eliminates the riverbed gateway — data is published wirelessly, up to 100m from the riverside.

Manual Data Harvesting

For broader environmental studies where real-time data isn't required, an EM-2Q communications system carries data to a topside gateway on demand — no diver retrieval, minimising tampering risk.

Drone Data Recovery

Ideal where data retrieval via drone is most effective. Airbag-recovery technology floats the unit to the surface on demand, then re-submerges — concealed, secure and rapidly redeployable.

EM-2 Innovative Features

The EM-2 is only the beginning

  • Electromagnetic Field Signalling (EMFS)
  • Reliable communication through water
  • Communication through ice & subterranean environments
  • Integration with widely-used sensor systems
  • Environmental resilience
  • Airbag inflation on demand

Rivers, Lakes & Reservoirs

Pollution tracking and compliance with global environmental regulations including the UK Environment Act 2021.

Offshore Wind Farms

Continuous monitoring of marine ecosystems around wind farms, helping mitigate environmental impacts.

Subsea & Underground

From offshore energy infrastructure to underground mining and tunnelling operations.