Smart Water Level Sensor for Sewers, Manholes & Surface Water
The Smart Water Level Sensor is a robust and accurate water level sensor designed for real-time monitoring of wastewater and surface water systems. Whether installed in sewer pipes, manholes, culverts, or open water bodies, this compact sensor delivers reliable height measurements in demanding environmental conditions. Ideal for municipalities, water boards, and system integrators looking to enhance infrastructure visibility, improve flood resilience, and enable smart water management.
Besides water it can measure the distance through air to any acoustically reflective surface.
Main features
- Water level measurements: Measures water levels through air of 4-250cm with an accuracy of 1-2mm (in static conditions).
- Fast response time over the full measurement range: < 1sec
- Multi-Application Monitoring: Easily deployed in sewer networks, manholes, drainage systems, and surface water channels.
- Real-Time Water Level Data: Supports proactive maintenance, overflow prevention, and early flood detection.
- Robust & Waterproof Design: Built to withstand harsh wastewater environments, with IP-rated housing for long-term field deployment.
- Easy Integration: Compatible with telemetry, and various IoT platforms via standard analog or digital outputs
- Low Maintenance, High Uptime: Designed for long-term stability and minimal recalibration, even in high-moisture or debris-prone settings.
- Interfaces: RS485, UART, I2C over RS485. Optional: 4-20mA current interface
The importance of water level monitoring
Accurate water level monitoring is essential for effective wastewater management, surface water control, and flood prevention.
By continuously tracking water height in sewer pipes, manholes, culverts, and open water bodies, municipalities and utilities can detect overflow risks early, optimize drainage capacity, and improve infrastructure resilience.
A reliable water height sensor provides real-time data that supports smarter decision-making, reduces maintenance costs, and enhances public safety.
Thanks to modern sensor technology, this is no longer a high-end investment—today’s industrial water level sensors offer robust performance, seamless system integration, and long-term reliability at a highly affordable price point, making them ideal for both new installations and retrofits in smart water networks.
Technical Specifications
| Feature | Specification |
|---|---|
| Measurement Range | 4 to 250cm |
| Measurement Principle | Radar sensor, 60GHz |
| Accuracy | ±1-2mm |
| Output Signal | RS485, UART, I2C over RS485. Tested with cable lengths upto 30m. Optional: 4-20mA current interface |
| Input Voltage Supply | 18-24 Vdc |
| Input current consumption Idle mode Measurement mode | on request mA on request mA |
| Ingress Protection | IP69 |
| Temperature Range | -5°C to +70°C |
More detailed measurement information and graphs are available on request.
Top Use Cases & Applications for a Smart Water Height Sensor
Smart water height sensors play a critical role in modern water infrastructure by providing real-time, reliable measurements of water levels across diverse environments. From urban sewer systems to open surface water and stormwater management, these sensors help municipalities, utilities, and integrators improve response times, prevent flooding, and optimize system performance. Below are the most practical and widely used applications for deploying water level monitoring technology. Hereby a short summary of the most relevant use cases
Sewer Pipe Level Monitoring
Detect abnormal flow or blockage conditions.
Monitor dry weather flow vs. storm events.
Optimize sewer system performance and maintenance scheduling.
Manhole
Monitoring
Support predictive maintenance and emergency response.
Monitor rising water levels to prevent surcharging or backflow.
Track infiltration/inflow during heavy rainfall.
Surface Water Monitoring
Comply with environmental regulations for water management.
Monitor water levels in rivers, canals, retention ponds, and ditches.
Enable flood forecasting and early warning systems.
Combined Sewer Overflow (CSO) Detection
Report and mitigate CSO incidents in line with compliance.
Track real-time water levels at overflow points.
Identify events that lead to pollution discharge.
Culvert and Drainage System Monitoring
Use as part of climate adaptation and flood resilience planning.
Prevent blockages and flooding in urban drainage infrastructure.
Monitor water level rise due to debris, sediment, or storm surges.
Smart City / IoT Water Infrastructure
Support data-driven decision-making for urban water management.
Integrate with wireless telemetry and SCADA systems.
Enable remote monitoring and automated alerts.
Water Board and Agricultural Use
Detect sediment buildup or flow restrictions.
Monitor ditches and irrigation channels.
Optimize water distribution for crops.
Stormwater Retention Basin Monitoring
Support green-blue infrastructure and sponge city planning.
Monitor capacity and overflow risk.
Automate pumps or gates based on water levels.
Why Water Level Monitoring is important
- Prevent water-related damage and health risks
- Reduce operational and emergency response costs
- Improve sustainability and regulatory compliance
- Enable smarter, more resilient infrastructure
- For more information also see wiki
Smart Water Height Sensor for Sewer, Surface & Stormwater Monitoring
Reliable, low-maintenance water level monitoring – fully IoT-ready
Our smart water level sensor is designed for real-time monitoring of water levels in sewer pipes, manholes, culverts, and surface water bodies. Built for harsh environments and long-term deployments, it offers accurate measurements, open communication interfaces, and seamless integration into SCADA, telemetry, or custom dashboard systems.
Designed for Municipalities, Utilities & OEM Integrators
- Open Protocols for Easy Integration
Supports RS485, UART, I2C over RS485. Optional: 4-20mA current interface and optional IoT protocols like MQTT – ideal for SCADA systems, cloud dashboards, and OEM platforms. - Low Maintenance, High Reliability
Rugged IP68/IP69 design, long calibration intervals, and minimal cleaning needs make this sensor perfect for remote or difficult-to-access locations. - Affordable & Scalable
With a low total cost of ownership, the sensor is well-suited for both standalone installations and network-wide rollouts. - Regulatory Compliance Support
Helps meet national and EU water management standards, including overflow monitoring, surface water reporting, and flood resilience planning. - Data-Ready for Visualization
Easily connect to real-time dashboards or third-party software for actionable insights and automated reporting.
Discover the Advantage of the Smart Water Level Sensor
Experience the precision of Dutch engineering with DutchWaterSensors—where advanced sensor technology meets real-world water monitoring needs for reliable and accurate performance in every drop.
More Info? Contact 2M