Water Quality Monitoring
UN-Standard assessment and SCADA-driven solutions for freshwater safety and ecosystem health.
Understanding Water Quality
Water quality is assessed through key physical, chemical, and biological indicators that reflect the safety and ecological health of freshwater systems. Together, these parameters support UN goals for safe drinking water, healthy ecosystems, and sustainable water resource management.
Key Water Quality Parameters
pH
Measures acidity and affects chemical reactions and organism survival. Most aquatic life thrives between pH 6.5–8.5.
Dissolved Oxygen (DO)
Indicates the amount of oxygen available for aquatic organisms. Low DO signals pollution or ecosystem stress.
Temperature
Influences oxygen solubility, biological activity, and chemical processes — a critical parameter for climate-related water monitoring.
Conductivity
Reflects the concentration of dissolved ions. Used to detect contamination, salinity changes, or industrial discharge.
E. coli
A fecal indicator bacterium essential for evaluating microbiological safety and identifying contamination from sewage or agricultural runoff.
Polyphase SCADA Workflow for Water Quality Monitoring
Our end-to-end SCADA solution captures, processes, and reports water quality data from sensor to compliance report.
Sensor Acquisition
pH, DO, temperature, and conductivity feed into PLC/RTU analog inputs. E. coli results come from an analyzer or lab upload.
Signal Conditioning
Filtering, scaling, and linearization ensure clean, accurate data before transmission.
Data Transmission
Data is transmitted via OPC UA, MQTT, or Modbus TCP to the SCADA layer.
SCADA Processing
Alarms, trend analysis, and live dashboards are generated from incoming data streams.
Storage
A historian database with timestamps archives all readings for compliance and trend analysis.
Reporting
Automated compliance reports and UN SDG-6 datasets are generated on schedule.
Operator Action
Operators acknowledge alarms, dispatch field teams, and log corrective actions directly in the system.
SCADA Deliverables
What the System Must Produce
- Live pH, DO, temperature, and conductivity readings
- E. coli results — latest and historical
- Trend charts: 1-day, 7-day, 30-day, and seasonal
- GIS map of monitoring stations
- Status indicators: OK / Warning / Critical
Agricultural Runoff & Catchment Pond Monitoring
Stormwater runoff and catchment ponds near agricultural land often accumulate elevated nitrogen and ammonia due to fertilizer use and soil leaching. Excess nutrients accelerate eutrophication, reduce dissolved oxygen, and threaten aquatic ecosystems downstream.
A real-time ESP32-based SCADA system continuously measures ammonia, nitrate, pH, turbidity, conductivity, and temperature to detect contamination events as they occur. By streaming live sensor data to a cloud dashboard, the system enables rapid response when concentrations exceed UN water quality guidelines.
Continuous monitoring also supports long-term trend analysis, helping identify seasonal runoff patterns, fertilizer impacts, and watershed vulnerabilities. Integrating alarms, data logging, and automated reporting ensures compliance with international standards while giving environmental managers actionable insight to protect water quality in agricultural catchments.
Monitored Parameters:
Ready to implement water quality monitoring?
Contact Polyphase Automation to discuss a SCADA solution tailored to your site's requirements.
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