- Managing and operating water supply system.

- Trading clean water.

- Consulting, designing and constructing water supply and drainage works and other civil works.

- Wholesaling building materials and equipment.

- Wholesaling other machines and spare parts.

- 2005: Tan Hoa Water Supply Branch was established on the basis of separation from Hoa Tan Water Supply Branch.

- 01 November 2010: Tan Hoa Water Supply Branch was transformed into Tan Hoa Water Supply One-Member Limited Company.

- 16 September 2014: Conducted the initial public offering (IPO) at Ho Chi Minh City Stock Exchange (HOSE) at the average price of VND14,625 per share.

- 17 December 2014: Transformed into Tan Hoa Water Supply Joint Stock Company with a charter capital of VND50 billion.

- 19 March 2015: Became a public company.

- 01 March 2016: Traded on the UPCOM market.