- Providing services of consultation, survey and design.

- Trading construction materials.

- Trading clean water.

- 1961: Technical Design Team under Hanoi City Planning Designing Institute was established;

- 1969: Renamed as Hanoi City Technical Work Design Institute;

- 1976: Renamed as Water Supply and Drainage Design Enterprise;

- 1984: Renamed as Water Supply and Drainage Design Company;

- 1995: Renamed as Vietnam Water Supply and Drainage, Sanitation and Environment Company;

- 2002: Renamed as Vietnam Water, Sanitation and Environment Company (VIWASE);

- 16 October 2006: Minister of Construction issued the Decision No.1427/QD-BXD on equitizing and transforming Vietnam Water, Sanitation and Environment Company into Vietnam Water, Sanitation and Environment Joint Stock Company;

- 28 November 2006: Put into operation under the model of a joint stock company with a charter capital of VND21 billion;

- 2012: Became a public company;

- 28 January 2016: Charter capital was raised up to VND29,998,490,000;

- 08 December 2016: Charter capital was raised up to VND36 billion;

- 06 January 2017: Traded on UPCOM market;