Chemical exposure at a water treatment plant was identified as one of WHA Group's safety risks during the risk assessment process. Employees at the water treatment plant may be exposed to chlorine and sodium hydroxide, according to the group. As a result, the following risk-mitigation measures were identified and implemented:

• All employees are provided with appropriate personal protective equipment (PPE);
• Installation of a chlorine detector;
• Annual workplace monitoring; and
• Annual medical health surveillance for employees.

WHA Group hosted an emergency response drill for a chemical spillage incident at WHA Eastern Seaboard Industrial Estate (WHA ESIE) on Jul 17 2021, involving by personnel from The Industrial Estate Authority of Thailand (IEAT) representatives, the Department of Disaster Prevention and Mitigation, the Department of Labor Protection and Welfare, local authority offices, local communities, local hospitals, customers, the Group's employees, and others. The drill covered emergency response mechanisms such as emergency reporting, first aid, PPE selection, order and control, and so on.

In 2021, a customer's chemical transportation truck fell into the waterways, resulting in a spillage incident at WHARIL. So WHA Safety and Security team has managed in accordance with the established measures and procedures. During the incident, no WHA Group employees were injured. Nonetheless, WHA Group is constantly developing and improving its road safety precautions as preventive measures following the incident in order to respond to similar cases in the future in a resilient and effective manner.