End-to-End River Rehabilitation
River Cleaning & Rehabilitation
An end-to-end, technology-enabled approach that integrates flood mitigation, river rehabilitation, waste interception and real-time monitoring into a single coordinated system restoring the Klang River.
- Flood Mitigation
- Waste Interception
- Water Monitoring
Addressing Waste at Multiple Points
LLSB manages a coordinated river-cleaning ecosystem that combines waste interception technologies, log booms, boat-based operations, continuous water-quality monitoring and downstream waste sorting. Together, these interventions address waste at multiple points along the Klang River and support long-term improvement in river conditions.
Channelled into river-cleaning initiatives
Waste removed between 2016 and 2025
Reduction in average monthly waste collection (1,367 MT → 528 MT)
Water quality improvement, with 58% of days at Class III or above in 2025
Log booms, Interceptors & continuous water-quality monitoring stations deployed
Component 01
Interceptor 002 & 005
Pioneering Advanced Waste Interception in Malaysia
Developed by The Ocean Cleanup, the Interceptor is a fully solar-powered river cleaning technology designed to extract plastic and solid waste.
The deployment of the Interceptor system in Malaysia marked a significant milestone in advancing river rehabilitation technologies within the country. Sungai Klang was selected as a priority river for implementation due to its strategic importance as a major urban river system, high pollution load from upstream urban activities, and critical role within Selangor’s economic and development corridor.
Recognising these factors, LLSB — through its mandate under the Selangor Maritime Gateway (SMG) — facilitated the adoption and deployment of the Interceptor system as part of a broader, integrated river rehabilitation strategy.
How it Works
Solar-Powered Waste Extraction
River Deepening and Widening
Dredging operations to increase the river's capacity and improve water flow, reducing the risk of overflow during heavy rainfall.
Riverbank Strengthening and Bund Construction
Construction of protective barriers along the riverbank to manage overflow during periods of heavy rainfall and prevent erosion.
Hydraulic
Optimisation
Optimisation of river flow using SPS technology to improve the overall performance of the river system and reduce flood risks.
Flood Mitigation & River Capacity
Key Capabilities
- High-volume waste interception at critical river points
- High-volume waste interception at critical river points
- High-volume waste interception at critical river points
- High-volume waste interception at critical river points
As of 2025
- ✓A total of five log booms remain in active full-time operation.
- ✓Log Boom Kinrara has been decommissioned due to land-related constraints.
- ✓Log Boom Mini Taman Sentosa operates on an as-needed basis, given the relatively low volume of waste in its designated area
Component 03
Log Boom System
The Log Boom System is a hydraulically engineered river management solution designed to intercept, control, and consolidate floating debris across upstream and midstream river environments. As part of LLSB’s Integrated River Management System (IRMS), the Log Boom functions as a strategic containment and flow-guidance mechanism, ensuring efficient waste capture while maintaining optimal river flow dynamics.
From Passive Barrier to Engineered Solution
Unlike conventional floating barriers, LLSB’s Log Boom System is developed through hydraulic flow analysis and engineering studies, allowing each installation to be customised based on river-specific conditions:
- ✓Flow velocity and discharge patterns
- ✓River geometry and width
- ✓Tidal influence and water level fluctuation
- ✓Waste load distribution and movement behaviour
Key Capabilities
- ✓Captures up to 800–900 metric tonnes of waste per month
- ✓Directs and consolidates floating debris for controlled collection
- ✓Adapts to dynamic river conditions, including high-flow and tidal environments
- ✓Enables strategic placement across upstream pollution sources
Full-Service Delivery Model
- Hydraulic and engineering studies
- System design and customisation
- Installation and deployment
- Maintenance and operational support
Component 03
Continuous River Water Quality Monitoring
The Water Quality Monitoring System (WQMS) is a 24/7 real-time monitoring platform that provides continuous data on river conditions. Installed at strategic locations, the system enables LLSB to monitor, analyse, and respond to changes in water quality with precision and speed.
From Passive Barrier to Engineered Solution
Unlike conventional floating barriers, LLSB’s Log Boom System is developed through hydraulic flow analysis and engineering studies, allowing each installation to be customised based on river-specific conditions:
- ✓ Flow velocity and discharge patterns
- ✓ River geometry and width
- ✓ Tidal influence and water level fluctuation
- ✓ Waste load distribution and movement behaviour
Key Capabilities
- ✓Continuous monitoring of Water Quality Index (WQI) parameters
- ✓Real-time data transmission and analysis
- ✓Early detection of pollution sources and anomalies
- ✓Data-driven decision-making for river management
Full-Service Delivery Model
- Dissolved Oxygen (DO)
- Biochemical Oxygen Demand (BOD)
- Chemical Oxygen Demand (COD)
- Ammoniacal Nitrogen (NH₃-N)
- Total Suspended Solids (TSS)
- pH levels
Measurable Results
Since the implementation of SMG river rehabilitation efforts, water quality has shown measurable improvements — from Class V (highly polluted) to Class III (suitable for Irrigation & Fishery of Common species).
57%
of recorded days showed water quality at Class III or above in 2025, reflecting a positive shift in overall river conditions.
Water Quality Classification
Component 04
Sungai Pinang Waste Sorting Facility
The First Waste Sorting Facility Along the Klang River
Launched in July 2025, the facility is a downstream processing hub for waste intercepted by Interceptor 002 and the adjacent Sungai Pinang log boom. Waste is manually separated into recyclable and non-recyclable streams, supporting better material recovery and Selangor’s transition towards a circular economy.
Located at Sungai Pinang, Klang, the facility was inaugurated in the presence of the Mayor of Klang, the NRES Secretary-General, the MBI Selangor Group CEO, and representatives from relevant agencies.
Full-Service Delivery Model
3,573 kg
651 kg
In Collaboration With
Component 05 · Integrated Water Resource Management
Strengthening Flood Resilience Along the Klang River
Following the major floods of 2021, the Selangor State Government strengthened its focus on flood-risk reduction across communities within the Klang River basin. The Integrated Water Resources Management (IWRM) flood mitigation programme commenced in 2022 and combines river dredging, deepening, widening and bund construction across 12 zones along the 56-kilometre corridor.
As of 2025, implementation is actively progressing in Blocks 1 and 3, covering some of the most critical flood-affected areas, including Taman Sri Muda, Kota Kemuning, Section 17, and Section 24 — supporting more than two million residents along the ZPE SMG corridor.
Block 1
Taman Sri Muda
Block 2
Kota Kemuning
Block 3
Section 17
Block 4
Section 24
Programme Focus
Increasing River Capacity by Up to 40%
The programme focuses on increasing river capacity by up to 40%, while strengthening overall flood resilience and enhancing environmental sustainability along the Klang River corridor.
River Deepening and Widening
Dredging operations to increase the river's capacity and improve water flow, reducing the risk of overflow during heavy rainfall.
Riverbank Strengthening and Bund Construction
Construction of protective barriers along the riverbank to manage overflow during periods of heavy rainfall and prevent erosion.
Hydraulic
Optimisation
Optimisation of river flow using SPS technology to improve the overall performance of the river system and reduce flood risks.
Key Achievement
Measurable Impact on Flood Resilience
22%
Increase in river capacity
Significant improvement in water flow
RM349M
Flood mitigation work delivery
Investment in infrastructure
1,250,873m³
Total
dredged material
Zones 6, 7, and 8
1,870m
Bund
constructed
Riverbank strengthening
Technology Spotlight
SPS Technology
Schematic Precast System — A Scalable Infrastructure Delivery Solution
As the sole distributor of Schematic Precast System (SPS) technology in Malaysia, LLSB offers this modular construction system as a scalable infrastructure solution for deployment locally and across regional and international markets.
What is SPS?
A modular precast concrete system designed to enhance structural integrity, accelerate construction timelines, and improve long-term durability of riverbank and water infrastructure works.
Accelerates Project Delivery
Significantly reduces construction timelines compared to traditional methods.
Reduces Environmental Disruption
Minimises impact on surrounding ecosystems during construction.
Optimises Lifecycle Cost
Improves long-term cost efficiency through durable, low-maintenance solutions.
Enables Replication
Scalable solution for large-scale infrastructure projects across regions.
This strengthens LLSB's positioning as a technology-driven infrastructure partner, capable of participating in large-scale tenders and engineering projects.
