We delivered an in-depth market study on the environment and water technologies sector in Vietnam for EU Business Avenues. The EU Business Avenues in South East Asia program is an initiative funded by the European Union to help European companies establish business collaborations in the region through matchmaking and business support services. The reports covered fresh water supply, wastewater treatment, air pollution and municipal and industrial solid waste management and recycling. We also provided an overview of environmental protection regulations in each country, identified opportunities for European firms and laid out different market entry pathways.