1983
NAFAL Contracting & Trading Co. LLC is established in the Sultanate of Oman, initially serving the Oil & Gas industry.
About Us
Building the future of water and wastewater infrastructure, Bio-Methanation, AI ML solutions and Circular Economy through engineering excellence and innovations
Who We Are
NAFAL & CIRCLE INTERNATIONAL is a joint venture established to deliver integrated, world-class water and wastewater infrastructure, Bio-Methanation, and AI/ML technologies across the GCC and international markets. The company combines the engineering and contracting expertise of NAFAL Group with the advanced process technologies, AI-driven analytics, global knowledge and experience platform of Circle H2O Group, a pioneering water and wastewater infrastructure, Bio-Methanation, AI ML solutions, A technology company based in the United States and having operations and offices in several countries.
Together, we bring a unique and powerful combination of capabilities: the ability to design, engineer, procure, construct, commission, and operate complex water and wastewater infrastructure, Bio-Methanation, AI ML solutions, supported by cutting-edge digital technologies that optimise plant performance and ensure long-term sustainability.
our Mission
To empower communities, industries, Institution and municipalities in Oman and across GCC, to build, operate, and optimize state-of-the-art water and wastewater infrastructure, Bio Methanation, AI ML Solution contributing to Circular Economy, Water Security, Environmental Sustainability, and Economic Development in every market we serve.
our vision
To be the leading and most preferred, technology driven environmental company in the GCC, recognised for our technical excellence, innovative spirit, customer oriented and commitment to a water and energy secure future for generations to come.
Our Core Values
Commitment to Clients
We make our clients' visions a reality — working alongside them at every step of the project journey
Safety & Health
We keep every person on every project safe. Safety is non-negotiable.
Integrity & Honesty
We are uncompromising in our integrity, honesty, and fairness in all business dealings.
Technical Excellence
We never stop innovating or improving. We bring the best global technologies and expertise to every engagement
Quality
A passion for excellence and doing it right the first time — our reputation depends on the value we deliver.
Accountability
We take full responsibility for our work, our commitments, and our results.
Sustainability
We enhance the quality of life in the communities we work in by safeguarding water resources and the environment.
Teamwork & Collaboration
We value every team member's contribution and foster a culture of inclusion, respect, and shared purpose.
History & Heritage of NAFAL
1983
1997
Under the leadership of Chairman Sarhan Ali Ahmed Al Sarhani, NAFAL expands significantly — adding Civil Construction, Electrical High-Tension Works, Corrosion Protection, Insulation, Scaffolding, and Water & Wastewater EPC services.
1997
2005
Establishment of NAFAL's Civil Division — enabling large-scale infrastructure and construction projects.
2005
2009
Launch of NAFAL's Electrical Division — covering EPC of substations, transmission lines, and electrical installations.
2009
2011
Launch of NAFAL's Mechanical Division — expanding into industrial equipment design, manufacture, installation, and maintenance.
2011
2012
NAFAL achieves ISO 9001 certification, demonstrating its commitment to quality management excellence.
2012
2017
NAFAL executes a major water and wastewater infrastructure project for Oxy, spanning all business units
2017
2021
NAFAL achieves ISO 14001 certification — a landmark in its commitment to environmental management and sustainability
2021
Present
NAFAL & Circle International Joint Venture is established, bringing together a leading multi-service contractor and a world-class water treatment technology company to deliver integrated, innovative, and sustainable solutions across the GCC and beyond.
Present
OUR JOURNEY
History & Heritage of Circle
Founded in Florida, USA
1973
Largest O&M firm in Florida with 75+ client accounts
1975
First turnkey/export contract, Jamaica
1977
Started operations in Trinidad & Tobago
1979
Expanded to Asia & first Bio-Methanation plant started
1984
Entry into Large Municipal Segmentto Asia & first Bio-Methanation plant started
1995
Third office opened in Trinidad & Tobago
1998
Largest sewage MBR in India (Commonwealth Games Village)
2010
Toshiba acquires 26% stake in UEM India
2014
UEM India becomes a Toshiba Group company (80% stake)
2015
Toshiba acquires 100% ownership
2018
Renamed as Toshiba Water Solutions Private Limited
2019
Started BIO CNG & Resource Recovery
2021
Developed Ensaras, which develops and deploys cloud-based AI/ML tools
2022
Recipient of the SKOCH Award
2023
Nanded Plant selected for Melina& Bill Gates Foundation
2024
Joint venture with Nafal Consulting & Trading in Oman
2026
Years of Team Experience
0
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Projects Worldwide
0
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Countries Served
0
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Biogas Digesters
0
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Commitment to Sustainability
Sustainability is embedded in the very purpose of NAFAL & Circle International. Every solution we design and every project we deliver contributes to a more sustainable future — protecting precious water resources, reducing environmental pollution, recovering energy from waste, and supporting communities in achieving long-term water and energy security.
Environmental Management
Backed by an ISO 14001 certified environmental management system, minimising the environmental impact of our operations.
Water Conservation
Every project we deliver helps clients reduce freshwater consumption, recover water for reuse, and protect receiving environments.
Energy Recovery
Our anaerobic digestion and waste-to-energy solutions convert organic waste into clean, renewable biogas
Zero Liquid Discharge
We help industries eliminate wastewater discharge entirely — achieving a truly circular water economy.
Community Impact
We invest in local employment, skills development, and regional supply chains. Guided by the principles of the Circular Economy and Reuse, we promote sustainable growth while reducing environmental impact.
Innovation
We continuously seek and adopt the latest technologies that reduce the carbon and environmental footprint of water treatment.
Our Leadership
Sarhan Ali Ahmed Al Sarhani
Chairman, NAFAL
Chairman of group of companies servicing Oman for 50 years, previously served Ministry of Oil & Gas and Ministry of Defence.
Kris Kshetry
Founder & President, Circle H2O
More than 53 year experience in Water, Wastewater and Waste to Energy Industry with working over 450 projects in 30 countries
Ahmed Al Sarhani
Managing Director, NAFAL
Next Gen entrepreneur with more than 20 year of experience in operating group companies in GCC region.
Rajasekaran G
Chief Opportunity Officer
More than 25 years of experience in the Water & Waste Industry in India, Oman & GCC countries
Pawan Pushkarna
Head – Projects
More than 30 years of experienced in EPC project, O & M in Oman and various countries