- Treating, producing and trading clean water.

- Constructing water sewerage and supply works. 

- 06 July 2017: Tra Noc - O Mon Water Supply Joint Stock Company was established through the merge of Tra Noc Water Supply Joint Stock Company and O Mon Water Supply Joint Stock Company under the business registration certificate No.1801548417 issued for the first time by Can Tho Department of Planning and Investment;

- October 2017: Became a public company; 

- January 25, 2019: Traded on UPCOM market.

- May 05, 2021: Increased charter capital to VND79,78 billion;