Our leadership team brings decades of combined expertise in infrastructure, water systems, environmental management, and project development.
We collaborate with leading international and local organizations, engineering firms, utilities, and industry partners to deliver sustainable water, wastewater, environmental, and infrastructure solutions.
Original Engineering Consultants Co., Ltd. (OEC) is a leading Japanese engineering consultancy established in 1962, specializing in water supply, sewerage, sanitation, solid waste management, industrial wastewater, flood control, and environmental infrastructure. OEC has extensive experience in feasibility studies, planning, detailed engineering design, construction supervision, and asset management. The company has implemented projects throughout Japan and internationally across Asia, the Pacific, the Middle East, and South America.
Ardurra International PTE LTD, Singapore
VHD International(Vietnam)
JFE
Maynilad
Manila Water
Environkonsult
CEST Inc.
EDCOP
RASA Engineering
DADEC
Leonardo Audit
ALAI
Tsicore
PPE Supplier
JFE
Maynilad
Manila Water
Environkonsult
CEST Inc.
EDCOP
RASA Engineering
DADEC
Leonardo Audit
ALAI
Tsicore
PPE Supplier
A selection of infrastructure, environmental, and water management projects delivered through our consultancy expertise.
RAJ Asia Consultants Inc. provides consultancy services for the construction management of the 46 MLD Cupang Water Reclamation Facility (DAO 2021-19 Upgrading Project) with a project cost of ₱1.317 Billion.
Scope includes design review, construction supervision, testing and commissioning, process probing, and compliance verification to meet DENR DAO 2021-19 standards.
Discuss Similar Project
RAJ Asia Consultants Inc. provides consultancy services for the construction management of the 16 MLD Talayan Water Reclamation Facility (DAO 2021-19 Upgrading Project) with a project cost of ₱860 Million.
Scope includes design review, construction supervision, testing and commissioning, process probing, and operational optimization for regulatory compliance.
Discuss Similar Project
This Feasibility Study evaluates the technical, environmental, financial, and economic viability of the proposed Water Impounding Reservoir Project in Barangay Mabini, Surigao City. It aims to identify the most practical and sustainable solution to improve the city's water supply and serve as the basis for the project's conceptual and Detailed Engineering Design (DED).
Initial investigations identified Parang-Parang Creek as a suitable raw water source due to its abundant wet-season flow. The proposed reservoir will capture excess runoff for use during dry periods, improving water supply reliability, reducing seasonal shortages, and strengthening the resilience of Surigao City's water system.
Discuss Similar Project
Previously Managed by RAJ Asia Board and Executives.
25-year full concession Public-Private Partnership/Joint Venture project between MetroPac Water Investment Corp., Equi-Parco Construction Corp., and Laguna Water District.
30-year PPP/Joint Venture project between MetroPac Water Investment Corp. and Cagayan de Oro Water District for 100 MLD bulk treated water supply.
Joint venture project supplying affordable, reliable, and sustainable bulk treated water to COBI.
Water and wastewater infrastructure projects in Vietnam.
Water treatment plant and bulk water supply development project in Vietnam.
Feasibility studies,Design, modeling, rehabilitation, and operational support for sustainable water systems.
Feasibility studies,Wastewater collection, treatment systems, sanitation planning, and compliance support.
Feasibility studies,Environmental assessments, protection strategies, permitting, and sustainability initiatives.
Advanced modeling, performance analysis, forecasting, and operational diagnostics.
Let us help you deliver efficient, sustainable, and future-ready infrastructure solutions.
Schedule a ConsultationGet in touch to discuss your project requirements and consultancy needs.