Drinking Water

Distribution Network Chlorine Decay Detected 6 Hours Earlier Than Periodic Sampling

Drinking Water Distribution · South / Southeast Asia

Representative of distribution network monitoring projects

The Challenge

A regional water utility managing a municipal distribution network faced a recurring problem: residual chlorine at network endpoints was frequently found to be below the regulatory minimum during routine inspection rounds — but by the time this was identified, the affected water had already been in the network for hours. The utility's sampling schedule covered endpoints every 48–72 hours, leaving long windows during which chlorine decay went undetected. Consumer complaints about taste and odor had also increased, though the source within the network was difficult to locate.

The Solution

Linksens deployed S-RC053 Residual Chlorine Sensors (amperometric method) at key distribution nodes — including pressure zone boundaries, storage tank outlets, and identified low-chlorine risk points. S-TUR033 Turbidity Sensors were added at endpoints most vulnerable to secondary contamination. All sensors connected to the C-MT013 Water Quality Controller with 4G data transmission to a centralized monitoring dashboard, providing continuous readings from all nodes with configurable alert thresholds specific to each location. When residual chlorine at any node approaches the regulatory minimum, operators receive an immediate notification — rather than discovering the problem at the next scheduled inspection.

The Results

"Representative of distribution network deployments where continuous monitoring is replacing periodic sampling schedules across utilities managing aging infrastructure."