PT WIKA Tirta Jaya Jatiluhur’s Digital Transformation of West Java’s Regional Clean Water System
Organization: PT WIKA Tirta Jaya Jatiluhur (WTJJ)
Project Name: SPAM Regional Jatiluhur I – Transforming Water for a Better Tomorrow
Location: West Java, Indonesia (serving Jakarta, Bekasi, and Karawang)
Project Phase: Completed and Operational
Estimated Project Cost: IDR 1.05 Trillion
Bentley Software: Bentley LumenRT, Bentley iTwin Capture, Bentley iTwin IoT, Bentley MicroStation, Bentley OpenFlows, Bentley OpenSite, Bentley PlantSight, PLAXIS, Bentley ProjectWise, and Bentley SYNCHRO
Additional Context: PT WIKA Tirta Jaya Jatiluhur (WTJJ) delivered an 80–kilometer regional clean water system serving more than 380,000 residents across West Java, reducing reliance on groundwater and enhancing climate resilience. By integrating Bentley’s OpenFlows, PLAXIS, and SYNCHRO within a connected digital ecosystem, the team achieved 18% energy savings, shortened delivery by 25%, cut 1,200 tons of CO2 emissions, and reduced the approval process for key facilities by 50%.
Project
In West Java, Indonesia, communities in Jakarta, Bekasi, and Karawang—a region that is home to more than 30 million people—faced a growing water crisis. Dependence on groundwater strained natural resources and caused land settling, threatening the long-term resilience of one of the world’s most densely populated urban corridors. A sustainable solution was needed to protect the people in these communities and the environment.
To address this challenge, PT Wika Tirta Jaya Jatiluhur (WTJJ) launched the SPAM Regional Jatiluhur I, transforming water for a better tomorrow project. Their goal was to develop a regional water supply system capable of delivering 4,750 liters of clean water every second, ensuring safe and reliable access for more than 380,000 residents while reducing pressure on groundwater reserves.
By December 2024, their vision had become reality. The project emerged as one of Southeast Asia’s most ambitious clean water initiatives and engineering achievements. The project also serves as a powerful example of how digital innovation, sustainability, and community well-being can come together to build resilient water infrastructure for the future.
Facts
- More than 380,000 residents will gain reliable access to clean water, while the construction phase has created over 1,500 local jobs.
- Leveraging digital workflows enabled a 25% faster project delivery and a 30% reduction in design rework.
- The project is expected to reduce 1,200 tons of CO2 emissions and deliver 18% energy savings at pump stations.
“Bentley’s solutions enabled us to transform water infrastructure delivery with a strong focus on environmental stewardship, community impact, and long-term resilience.”
Solution
Delivering an 80-kilometer clean water system that included intake structures, treatment facilities, pumping stations, and transmission mains was a big undertaking. The WTJJ team knew that traditional methods would not be enough. They needed a digital strategy that could align cost, quality, and sustainability goals while keeping a complex, multi-stakeholder project on track.
Bentley’s software portfolio provided that foundation. OpenFlows was used to model the hydraulic performance of the entire network, from treatment plant to distribution mains, ensuring that pipelines were sized correctly, pressure zones balanced, and pump stations optimized for energy savings. PLAXIS gave engineers predictive insight into soil stability along the 80-kilometer corridor, reducing excavation risks in riverside and wetland areas. SYNCHRO 4D visualized construction of critical assets, such as pumping stations, pipe networks, and treatment units, helping the team coordinate construction stages efficiently and minimize delays.
Collaboration was equally vital. With ProjectWise, engineers, contractors, and regulators shared one set of data, which shortened design cycles and helped avoid clashes between civil, mechanical, and geotechnical work. PlantSight centralized engineering and operational data, creating the foundation for a digital twin that now supports long-term operation of treatment and pumping facilities. iTwin IoT connected field sensors to live dashboards, enabling predictive monitoring of pump performance, pipe stress, and trench stability, moving the team from reactive fixes to proactive asset management.
Visualization also played a key role. Using Bentley LumenRT, technical designs of treatment facilities and pump houses were transformed into immersive experiences that accelerated government approvals and helped communities understand the benefits of the new infrastructure.
By weaving these tools into a single digital ecosystem, WTJJ delivered a clean water pipeline, as well as treatment plants, pump stations, and supporting systems that now serve hundreds of thousands of residents, becoming a model of resilience and collaboration for Indonesia’s water sector.
Outcome
The WTJJ project was completed on time and within budget, but its real success lies in the measurable improvements to both infrastructure and community outcomes. By using OpenFlows to optimize pump station design, the team achieved up to 18% energy savings in daily operations, lowering costs and reducing the system’s long-term carbon footprint. PLAXIS simulations ensured trench stability and safeguarded the integrity of the transmission mains, which helped the project avoid pipeline failures during commissioning and saved an estimated IDR 12 billion in potential rework and downtime.
Construction sequencing through SYNCHRO 4D shortened the delivery schedule by 25% and cut more than 60 working days from the timeline, ensuring that treatment plants and pumping facilities became operational sooner. Meanwhile, immersive visualizations created with Bentley LumenRT helped regulators and stakeholders move quickly and confidently, reducing the approval process for key facilities by 50%.
The combination of these efficiencies translated into a 22% return on investment. More importantly, more than 380,000 residents now enjoy reliable access to clean water, reducing reliance on groundwater and strengthening climate resilience in the greater Jakarta–Bekasi–Karawang corridor of more than 30 million people. Beyond serving immediate needs, the digital twin created with PlantSight and iTwin IoT continues to monitor pumps, pipelines, and treatment units, ensuring that this critical infrastructure will remain safe, efficient, and sustainable for decades to come.
Software
Bentley Software: Bentley LumenRT, Bentley iTwin Capture, Bentley iTwin IoT, Bentley MicroStation, Bentley OpenFlows, Bentley OpenSite, Bentley PlantSight, PLAXIS, Bentley ProjectWise, and Bentley SYNCHRO.
Learn more about how Bentley’s OpenFlows and ProjectWise can help deliver sustainable water infrastructure projects.
Bentley Year in Infrastructure (YII) and the Going Digital Awards is an annual event where global industry leaders come together to showcase infrastructure delivery and performance excellence and exchange visionary ideas for the future. Find out more on the YII site.
