Entering 2026, Vietnam’s environmental market continues the screening process that began a few years ago. Many small players have left the game because they could not keep up with technical requirements, while companies with strong technology capabilities and good after-sales service increasingly win the large projects.

Pressure comes from many sides at once: the Law on Environmental Protection 2020 is taking hold in depth, with a stricter environmental permit mechanism and post-inspection; Vietnam’s Net Zero 2050 commitment; and the ever more demanding ESG requirements that FDI corporations impose on their entire supply chains. Rising water costs and compliance costs are turning water reuse and recirculation from “should do” into “must do”. Not every design and construction contractor is capable of meeting this new baseline.

Below is the Top 10 leading environmental companies in Vietnam in 2026 – companies that not only offer a wide range of solutions from wastewater, exhaust gas and water supply treatment, but have also maintained and proven their quality over many years, as follows:

Table of Contents

1. NGO International Co., Ltd

Overview: NGO is a company specialising in innovative solutions and products in the fields of environment and health. With the goal of providing innovative and cost-optimised solutions, NGO focuses on designing advanced wastewater and water supply treatment solutions. NGO’s solutions can reduce the treatment footprint by up to 50% compared with traditional technology, while ensuring the treated water meets Grade A and can be reused by up to 90%. NGO also provides mobile, flexible systems that need no construction and do not affect production and business operations. The company is able to treat many kinds of difficult industrial wastewater and to carry out recovery and reuse projects applying complex technologies such as evaporation, dialysis, electrochemistry… What sets NGO apart is its commitment backed by final operating quality: the company stays with customers after handover and operates on an IT & AI platform with a strict QC process. NGO’s customers are mainly enterprises and FDI corporations.
Areas of operation:
- Industrial and domestic wastewater treatment.
- Ultra-pure water treatment for electronics, food and pharmaceutical production.
- Treatment of saline-contaminated water, and resource recovery and recirculation.
- GHG inventory, emission reduction and greenhouse gas treatment.
- Design consulting and operation management of environmental treatment systems.
- Consulting on procedures and legal matters in the field of environmental protection.
- Maintenance, servicing, upgrading and operation of environmental treatment systems.
- Supply and fabrication of environmental equipment to design.
- Supply of chemicals, equipment, microorganisms, activated sludge and specialised materials for pollution treatment, as well as microbial enzymes and biofilm media used in domestic, hospital and industrial wastewater treatment.
Area of operation: Focused on provinces with many industrial parks. Northern Vietnam: Hanoi, Bac Ninh (including former Bac Giang), Hung Yen, Hai Phong (including former Hai Duong), Phu Tho (former Vinh Phuc), Ninh Binh (former Nam Dinh), Quang Ninh. Central Vietnam: Thanh Hoa, Nghe An. Southern Vietnam: Ho Chi Minh City (including former Binh Duong and Ba Ria – Vung Tau), Dong Nai, Tay Ninh (including former Long An).
Contact information:
- Hanoi office: B28, HH04, Viet Hung Urban Area, Long Bien District, Hanoi
- Ho Chi Minh City office: 5th Floor, PLS Y12 Hong Linh Building, Y12 Hong Linh Street, Ward 15, District 10, Ho Chi Minh City
- China office: Room 209, Skirt Building, Building 2, Haichuang Tower, No. 288 Dengyun Road, Yushan Town, Kunshan City
- Email: office@8ngo.com
- Hotline: +84 969 867 924 – +84 969 867 925
- Website: https://ngoenvironment.com/

2. ECOBA Environmental Technology Co., Ltd (ECOBA ENT)

Overview: ECOBA ENT was founded in 2013 and is a member of the ECOBA Vietnam group. Drawing on the resources and technology of its parent company, it quickly rose to the market-leading group. ECOBA ENT specialises in EPC general contracting solutions, design consulting, construction, equipment supply, and programming of control and monitoring systems. With a foundation strength in construction, the company focuses on large-scale wastewater treatment systems for industrial parks and clusters, together with operation services for those same projects.
Areas of operation:
- EPC general contracting for environmental works.
- Design consulting and construction.
- Equipment supply, fabrication and installation.
- Programming of automatic control and monitoring systems.
Area of operation: Headquartered in Hanoi, focusing on industrial park and cluster projects in Northern Vietnam.
Contact information:
- Address: 5th Floor, UDIC COMPLEX Building, Hoang Dao Thuy Street, Trung Hoa Ward, Cau Giay District, Hanoi
- Telephone: +84 24 3792 5347 / +84 24 3839 8986
- Email: sales-ent@ecoba.com.vn
- Website: http://www.ecobaent.vn

3. SEEN Engineering Joint Stock Company

Overview: Founded in 1997, SEEN is one of the longest-established names in Vietnam’s environmental engineering sector, with nearly 30 years of operation. SEEN’s strength is the combination of environmental technology and automation – control, which allows the company to take on the full package from process design to the control and monitoring system of the treatment plant. SEEN has taken part in many large-scale wastewater treatment projects for industrial parks, cities and key manufacturing sectors, with a network of offices from Hanoi and Da Nang to Ho Chi Minh City.
Areas of operation:
- EPC general contracting for wastewater and water supply treatment plants.
- Industrial measurement, control and automation systems.
- Fabrication of environmental equipment.
- Operation, maintenance and upgrading of systems.
Area of operation: Headquartered in Hanoi, with offices in Da Nang and Ho Chi Minh City – covering all three regions.
Contact information:
- Head office: No. 1, Thanh Lam Street, Minh Khai Ward, Bac Tu Liem District, Hanoi
- Da Nang office: No. 116, Kinh Duong Vuong Street, Lien Chieu District, Da Nang City – Tel: (0236) 378 9397
- Ho Chi Minh City office: Lot I3-8B, N2 Street, High-Tech Park, Thu Duc City – Tel: (028) 3730 6282
- Email: info@seen.com.vn
- Website: https://seen.com.vn/

4. Bách Khoa Environmental Technology Trading and Services Joint Stock Company

Overview: Founded in 2006, Bách Khoa Envitech has nearly 20 years of operation in wastewater treatment, water supply treatment, exhaust gas treatment and environmental consulting. The company has a team of engineers trained at home and abroad, together with a skilled construction workforce, capable of handling items from construction to equipment installation. With a start tied to a technical university environment, Bách Khoa Envitech is strong in technology consulting for specialised treatment problems.
Areas of operation:
- EPC general contracts.
- Design consulting and project management.
- Construction of environmental works.
- System maintenance, servicing and upgrade services.
- Fabrication of environmental equipment.
Area of operation: Business registered in Ho Chi Minh City, with a working office in the Vietnam National University area (Di An) and a Northern Vietnam branch in Hanoi.
Contact information:
- Business registration address: 30 D9 Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City
- Working office: VNU-HCM Urban Area, Dong Hoa Ward, Di An City, Binh Duong
- Northern Vietnam branch: Vinashinlines Building, Lot CC1-I.3.1 Phap Van – Tu Hiep Urban Area, Hoang Liet Ward, Hoang Mai District, Hanoi
- Hotline: 0903.865.867
- Email: sales@bachkhoa-envitech.com
- Website: https://bachkhoa-envitech.com/

5. Dương Nhật Construction Investment and Environmental Technology Co., Ltd

Overview: Dương Nhật is one of the well-known companies in Vietnam in construction investment and environmental technology, operating under the motto “always meeting commitments better”. The company provides full-package services from design and construction to operation of wastewater treatment works, solid waste treatment and other environmental protection solutions. Dương Nhật has the capability to deliver projects as EPC general contractor and under BOT and BT investment models and has carried out many projects in the beer, rubber, beverage, coffee processing, dairy, food, seafood and industrial park sectors.
Areas of operation:
- EPC general contracting for wastewater and water supply treatment works.
- BOT and BT investment in environmental works.
- Operation and maintenance of water treatment works.
Area of operation: Headquartered in Ho Chi Minh City, focusing on projects in Southern Vietnam in the beer, rubber, dairy, food, seafood and industrial park sectors.
Contact information:
- Address: 117 – 119 Nguyen Hong Dao Street, Ward 14, Tan Binh District, Ho Chi Minh City
- Telephone: (+84) 28 3949 1964
- Email: mail@duongnhat.com.vn
- Website: https://duongnhat.com.vn/

6. ENVICO Environmental Technology Joint Stock Company

Overview: Founded in 2011, ENVICO has a wide operating network, with its head office in Ho Chi Minh City and branches in Central and Northern Vietnam. The company provides a relatively full-package service to enterprises: from environmental legal dossiers and monitoring to the design – construction and operation of treatment systems. ENVICO’s strength lies in consulting on environmental dossiers and procedures – work that many small and medium-sized manufacturers often struggle with as the Law on Environmental Protection tightens post-inspection.
Areas of operation:
- Consulting on environmental dossiers, procedures and permits.
- Environmental monitoring and analysis.
- Design and construction of wastewater and exhaust gas treatment systems.
- Operation, retrofitting and upgrading of treatment systems.
Area of operation: Head office in Ho Chi Minh City, Central Vietnam branch in Tuy Hoa (former Phu Yen, now part of Dak Lak) and Northern Vietnam branch in former Hai Duong (now part of Hai Phong).
Contact information:
- Head office: 283 Duong Dinh Hoi, Quarter 3, Tang Nhon Phu Ward, Ho Chi Minh City
- Central Vietnam branch: 12 An Duong Vuong, Ward 9, Tuy Hoa City, Phu Yen – Tel: 0969 298 297
- Northern Vietnam branch: 131 Phung Chi Kien, Tan Binh Ward, Hai Duong City – Tel: 0934 383 383
- Telephone: (028) 6679 7205 – 0909 794 445
- Email: admin@envico.vn
- Website: https://congnghemoitruong.net/

7. CWI Vietnam Joint Stock Company

Overview: CWI Vietnam designs, constructs, installs and transfers technology for clean water, purified water, ultra-pure water and wastewater treatment systems. Although a younger face than many names on this list, CWI stands out thanks to its focus on purified and ultra-pure water for electronics, pharmaceutical and food production – a segment growing fast with the wave of FDI investment into Northern Vietnam. The company is also strong in supplying water-industry materials and equipment.
Areas of operation:
- Treatment of supply water and clean water for production and domestic use.
- RO and DI systems, purified and ultra-pure water.
- Industrial and domestic wastewater treatment.
- Supply of water-industry materials and equipment.
Area of operation: Headquartered in Hanoi, serving mainly electronics, pharmaceutical and food factories in industrial parks in Northern Vietnam.
Contact information:
- Address: Villa 14BT4, Phap Van Urban Area, Tran Thu Do Street, Tu Hiep, Hoang Mai, Hanoi
- Hotline: 089.603.6999
- Email: cskh@cwi.vn
- Website: https://cwi.vn/

8. Toàn Á Environmental Technology Joint Stock Company

Overview: Founded in 2003, Toàn Á is one of the long-standing water treatment companies in Hanoi, with more than 20 years of operation. The company’s motto is “to provide products with the best quality, the best service and the most suitable cost”. Toàn Á works with many foreign partners to supply clean water treatment equipment, and has its own strength in trading water-industry equipment and materials, as well as water filtration systems serving both household and business customers.
Areas of operation:
- Consulting, supply and installation of wastewater treatment systems for households and industrial parks.
- RO water treatment, bottled and canned drinking water, mineral water.
- Treatment of supply water, domestic, industrial and pharmaceutical wastewater.
- Trading of water-industry equipment and materials.
Area of operation: Transaction office in Hanoi and a Ho Chi Minh City branch.
Contact information:
- Transaction office: L7-39 Athena Fulland Urban Area, Dai Kim, Hoang Mai, Hanoi
- Ho Chi Minh City branch: No. 677 National Highway 1A, Binh Hung Hoa Ward, Binh Tan, Ho Chi Minh City
- Hotline: 0913.543.469
- Northern Vietnam branch: 08.222.11.666
- Email: contact@toana.vn
- Website: https://toana.vn/

9. Việt An Environmental Engineering Joint Stock Company (Việt An Enviro)

Overview: Founded in late 2010, Việt An Enviro takes its own direction compared with the rest of the list: instead of building treatment systems, the company focuses on automatic, continuous environmental monitoring and industrial measurement. Its core products are fixed monitoring stations operating 24/7, monitoring the quality of wastewater, exhaust gas, surface water and ambient air in real time. This is exactly the infrastructure enterprises are required to have to prove compliance as regulators step up post-inspection. The company has offices in Ho Chi Minh City, Hanoi, Da Nang and Ha Tinh.
Areas of operation:
- Automatic, continuous wastewater and exhaust gas monitoring stations.
- Surface water and ambient air monitoring.
- Industrial measurement and analysis equipment.
- Transmission and management of monitoring data to regulators.
Area of operation: Four offices in Ho Chi Minh City, Hanoi, Da Nang and Ha Tinh.
Contact information:
- Address: 4E Street No. 6, Quarter 4, An Phu Ward, Thu Duc City, Ho Chi Minh City
- Email: sales@vietan-enviro.com
- Website: https://vietan-enviro.com/

10. Vũ Hoàng Chemicals & Environment Co., Ltd

Overview: Founded in 2008, Vũ Hoàng is one of the large-scale suppliers of industrial and environmental chemicals in Vietnam. Under the motto “The best product quality – The most advanced technology solutions – The most optimal service”, the company invests in chemical production and a specialised transport system, ensuring fast and safe delivery. Vũ Hoàng has facilities in Tay Ninh and Bac Ninh and serves as a chemical supply link for the very wastewater treatment contractors in the sector.
Areas of operation:
- Supply of industrial chemicals.
- Chemical production.
- Chemical transport.
- Design consulting, construction and operation of wastewater treatment systems.
- Preparation of EIA reports.
Area of operation: Production facilities in Bac Ninh and Tay Ninh, with a representative office in Hanoi.
Contact information:
- Head office: Lot H1-2, Dai Dong Industrial Park, Hoan Son, Tien Du District, Bac Ninh Province
- Representative office: 7th Floor, Cotana Building, Lot CC5A Linh Dam Peninsula, Hoang Liet Ward, Hoang Mai District, Hanoi
- Telephone: 024 3382 9999 – 08 5782 9999
- Email: vuhoang@vuhoangco.com.vn
- Website: https://vuhoangchem.com/

CONCLUSION

The ten names above show that Vietnam’s environmental sector in 2026 has become fairly clearly differentiated: some players are strong in large-scale construction and installation general contracting, some specialise in difficult-treatment technology and water reuse, some prepare legal dossiers, and some focus only on monitoring or chemical supply. No single company suits every problem – what matters is choosing the right capability for the right need.

Choosing a reputable partner in the environmental field not only helps enterprises comply with the law but also demonstrates social responsibility and a commitment to sustainable development. As ESG requirements from supply chains grow ever more demanding, an environmental treatment system is no longer a mandatory cost but has become part of an enterprise’s competitive capability.

If you are looking for a suitable environmental solution – especially for difficult wastewater treatment, water reuse or a post-investment operating quality commitment – do not hesitate to contact NGO International Co., Ltd on hotline +84 969 867 924 to receive consultation from a leading team of experts in the environmental field.