by Gracey Griffin January 13, 2021 2 min read

"Converting static lumps of iron into information portals"

Waterwatch has developed a smart manhole sensor to monitor liquid levels underground. This information can be used in a variety of situations including Smart City hydrology monitoring. As many manhole covers are located on top of many strategic assets such as sewer, stormwater and water, they are ideal for collecting essential data. 

Until now, manholes have been installed by water authorities and local councils solely to provide access for maintenance workers to work in underground networks. Monitoring this infrastructure has required maintenance crews to be on standby 24/7 and checking networks regularly, costing rate payers enormously.

By marrying digital communication technology with strategically located manhole covers, we are able to create a network or unobtrusive information portals in the ground. This solution can reduce, or even eliminate, the need for inspection personnel to drive out to remote sites and open covers for confined space inspections. The user will be able to monitor networks with real time information to review water levels, flow rates and many other indicators with Waterwatch Live.


The Otago Regional Council has selected the Waterwatch LS1 and specifically designed manhole antenna to monitor their newly commissioned Stock Truck Effluent Disposal (STED) system near Alexandra, NZ - pictured above. 

The Waterwatch sensor, connected to an external antenna, is mounted on the EJ Group Maestro manhole cover. The device is compact and unintrusive making it the perfect solution for confined spaces.

SJ Allen Balclutha clean and service the STED system. They receive notifications from our online platform when maintenance is required or preset thresholds are met. Real time information allows our customers to know what is happening to critical underground networks and to make better informed decisions on time.


For more information, please enquire here:


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