Subsidiaries & Affiliates

PT Tirtanium

A highly respected water treatment chemical provider, PT Tirtanium is a specialist in large scale industries like Lighting, Petrochemical, Fertilizer, Steel plants, Water Treatment Plants, Power Plant Utilities, Marine and even the Oil Field Productions & Refineries industries.


Chemicals produced by PT Tirtanium are specifically designed for, but not limited to, these applications:

  • Boiler Water Treatment
  • Oil & Gas Chemical
  • Reverse Osmosis
  • Geothermal / Mining
  • Sea Water Desalination Unit & Thermal System
  • Cooling Water Treatment


PT Cahayamurni Dirganusa

Established in 1976, PT Cahayamurni Dirganusa is a long-serving construction company that has earned a strong reputation for being involved in the construction of water and wastewater treatment facilities, installation of pipe networks, and has successfully build a series of large-scale hydraulic structures, not only for the local and foreign clients but also for the government agencies.

Its major portfolios comprise of

With its extensive experiences, PT Cahayamurni Dirganusa has built a major portfolio of projects, such as:

  • Water Treatment Plant, capacity up to 3,000 l/sec
  • Waste Water Treatment, capacity up to 75 l/sec
  • Raw Water Intake, capacity up to 3,500 l/sec
  • Reservoir, capacity up to 8,000 m3
  • Pipe Installation, diameter up to 1,600 mm