- 1963: Formerly known as Town Water Supply Enterprise under Son La Construction Department, was established;
- April 18, 2005: Officially operated as a Joint Stock Company, under the business registration license No. 5500154649, with an initial charter capital of VND 43.98 billion;
- November 2006: Increased charter capital to VND 54.87 billion;
- July 2008: Increased charter capital to VND 56.23 billion;
- August 10, 2012: Increased charter capital to VND 58.09 billion;
- April 25, 2015: Increased charter capital to VND 60.59 billion;
- August 9, 2017: Increased charter capital to VND 62.09 billion;
- July 22, 2019: Officially traded on UPCOM market;
- January 07, 2021: Increased charter capital to VND100 billion;