Enigma3m trial in Johor pinpoints 115 leaks

A subsidiary of Ranhill Holdings Berhad, Ranhill SAJ Sdn Bhd is involved in the process of water treatment and distribution of treated water to consumers right up to billing and collection. The company serves a population of 3.1 million, and manages 22,175km of pipes over an area of approximately 19,000km2.

As of December 2018, the Non-Revenue Water (NRW) level of Johor is at 24 per cent, with plans to push it down to five per cent by 2025. One of the activities implemented to achieve the target is by creating SMART District Monitoring Areas (DMAs). In the initial stage five DMAs were involved in implementing the SMART DMA programme.

During the implementation of SMART DMA, a total of 295 Enigma3m units were installed and deployed at a DMA for at least three months, to find, repair and monitor leaks from the correlations obtained. The pipeline material and distance of the Enigma3m units were dependant on pipe material, ranging from metal to poly pipes. A total of 115 leaks were found and repaired in the second month of Enigma3m installation.

The total pipeline length covered for the Bandar Putra B DMA was 38.51km, with 5052 connections. The Net Night Flow (determined by subtracting Legitimate Night Flow from the Minimum Night Flow) before installation of Enigma3m was at 30.99 l/s and total daily flowrate was 6200 m3/day.