- Producing and distributing clean water.

- Managing and operating water supply and drainage system.

- Constructing public service works.

- Other businesses.

- 1958: Lang Son Piped Water Factory was established;

- 1980: Renamed as Lang Son Water Factory;

- 1992: Renamed as Lang Son Water Supply Company;

- 2005: Renamed as Lang Son Water Supply and Drainage One-Member Limited Company under the Decision No. 1551/QD-UBND issued by Lang Son Provincial People's Committee;

- 12 November 2008: Lang Son Provincial People's Committee approved the plan on transforming Lang Son Water Supply One-Member Limited Company into Lang Son Water Supply and Drainage Joint Stock Company under the Decision No. 2438/QD-UBND;

- 25 December 2008: Went IPO at an average winning bid of VND 10,500 per share;

- 10 April 2009: Put into operation in a joint stock company model with a charter capital of VND 50,098,000,000;

- 29 July 2016: Traded on the UPCOM market;