Biodiversity

Care for Water Quality in Water Sources

As the Company engaged in water resource business, it prioritizes efficient water use, ecosystem balance, and biodiversity conservation. The Company has continuously monitored water quality changes to assess potential impacts from raw water transmission through its pipeline network on aquatic life. To provide customer confidence and prevent disruptions to their production processes, the Company has established a water quality monitoring system, categorized into 2 methods, as follows:

Water quality monitoring by external agencies: 13 main and reserve water sources of the Company were monitored. The physical and chemical properties of the water were measured monthly. The results were further analyzed to identify trends, causes, and factors concerned. Relevant reports were produced and submitted to relevant agencies and the customers through the Customer Relations Division.
Water quality monitoring through online tools at 20 spots: Water quality changes were monitored by the Company using the Supervisory Control and Data Acquisition (SCADA) system. Reports of the water quality results were sent to the customers once per day.

The Company compares water quality test results from various sources against 8 years of historical raw water quality data to monitor trends and detect changes in water quality. Based on this monitoring and surveillance, the Water Quality Index (WQI) for 2024, as referenced from the Pollution Control Department, indicates that the average water quality in most major reservoirs remains at a fair level.

Based on the Water Quality Index (WQI) data, it was found that the overall raw water quality was within the water quality benchmark in surface water sources. However, some parameters such as Conductivity and Total Dissolved Solids (TDS) tend to rise every year. This has increased the water demand for customers’ production processes as some raw water that was not of good quality had to be discharged from the production system. If this kind of water quality tend to increase, it will affect the amount of raw water in the reservoir to be insufficient to meet demand. Therefore, the Company must increase monitoring measures and closely monitor it.

In addition, the Company has coordinated with customers to monitor water quality from the source and the destination sent to each customer to increase service efficiency and speed in improving water quality for customers as follows:

In case that the Company finds any irregularities other than the parameters from the online monitoring from the source of water, it will inform the customer so that the customer can be vigilant and prepare to improve the water quality before entering the production system.

In case that no irregularities are found from the source of water, but the customer finds irregularities from the water received into the production process, the customer will notify the Company so that the Company can take steps to improve the system to restore the water quality to normal.

In the event of any adjustments to the water distribution system, the Company will notify customers in advance about potential impacts. All distribution adjustments will always be made with consideration of customer water demand.

In addition to the activities mentioned above, the Company also conducts initiatives to promote biodiversity, as follows:

Collaborating with government agencies and local communities on an agreement to pump water from the Bang Pakong River during the flood season. Water pumping will commence when salinity levels drop below 1 g/L at the Ban Pho monitoring station to minimize the impact of salinity on aquatic life.

Supporting the Chachoengsao Environmental Conservation Association by participating in reforestation initiatives for upstream watershed conservation and releasing aquatic species into the Bang Pakong River.

Natural Resource and Water Source Restoration Activities.