Networks / Pipelines

Event Duration Monitors

EDM’s are being installed across NI Water’s wastewater network over a multi-year investment programme, legislation is the pivotal driver.

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By the end of the current Price Control period (PC21) NIW aims to have 900 EDMs operational, providing key reliable information.

EDMs are required at High Amenity/Sensitive Receiving waters, including designated shellfish waters, bathing waters, Special Areas of Conservation, Marine Conservation Zones. The EDM contract provides 3 different types of EDM installations nto storm overflows (SO): wastewater pumping stations (WwPS), SO mains-powered installation and SO battery-powered datalogger installation. Ultrasonic level instrumentation is used as the measurement tool, with the process involving multiple teams across NIW.

The instrumentation records continuously, uploading data every 2 minutes. This provides real-time assets monitoring helping to plan for and prevent environmental spills

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