Water and Wastewater Management

The Company recognizes the potential environmental impacts of wastewater discharge from hospital operations on surrounding communities.
The Hospital strictly adheres to regulatory requirements and ensures that no untreated wastewater is discharged into public waterways, while maintaining continuous compliance with applicable environmental standards.

Management Approach

Wastewater Management

The Company conducts regular inspection and maintenance of wastewater pumps in the central wastewater holding system. Chlorination is continuously applied to disinfect wastewater, and samples are collected and tested on a monthly basis prior to discharge.

All wastewater is discharged into the closed sewer system of the Bangkok Metropolitan Administration (BMA) and treated at the Din Daeng centralized wastewater treatment facility.

The system design and installation have been reviewed and approved by BMA officials. Relevant hospital departments have also participated in site visits and system evaluations.

Monthly monitoring is conducted through official reports obtained from the BMA, significantly reducing the risk of wastewater treatment system failure.

Water Consumption Reduction

The Company has implemented water conservation initiatives, including the gradual installation of sensor-based faucets in public restrooms to minimize unnecessary water usage.

In addition, awareness campaigns are conducted through signage and internal communication to encourage water-saving behavior among patients, visitors, and staff.

Performance in 2025

In 2025, total water consumption decreased by 13,182 cubic meters compared to 2024.
However, when measured as water consumption per patient day, the figure slightly increased to 1.94 cubic meters, representing a 2.11% increase compared to 1.90 cubic meters in 2024.

Based on these results, the Company will continue to enhance water management strategies to ensure alignment with its established targets and improve resource efficiency.

Energy Consumption

The Company is committed to optimizing electricity consumption efficiency in order to ensure the responsible use of natural resources, minimize environmental impacts, and reduce operational energy costs.

The Company strictly complies with the Energy Conservation Promotion Act B.E. 2535 (1992), as amended in B.E. 2550 (2007), and continuously implements energy management initiatives across its operations.

Management Approach

The Company has actively implemented energy efficiency measures since 1998, as demonstrated by its recognition through the Outstanding Energy Conservation Building Award from the Department of Energy Development and Promotion, Ministry of Science, Technology and Environment.

In 2025, the Company implemented key energy-saving measures as follows:

1. Lighting System Upgrades
   - Replaced 108 conference room lamps from 120W incandescent (PAR38) to 20W LED, saving 15,552 kWh/year (THB 66,873/year)
   - Replaced 200 restroom lamps from 10W LED to 7.5W LED, saving 21,155.40 kWh/year (THB 90,968.22/year)
   Total savings from lighting upgrades: 36,707.40 kWh/year, equivalent to THB157,841.22/year
    
2. Cleaning of the tube bundles of a Daikin chiller was carried out, as the chiller operates continuously throughout the day, every day, to provide cooling for the building’s air-conditioning system. Continuous operation had resulted in scale deposits accumulating on the tube surfaces, thereby reducing operating efficiency and increasing the approach temperature. This improvement was undertaken to minimize potential damage to the chiller and reduce electricity consumption. Prior to the improvement, the chiller consumed a total of 197,470 kWh/year, equivalent to THB 829,128.86 per year. After the improvement, annual electricity consumption decreased to 187,460 kWh/year, equivalent to THB 787,099.28 per year, representing a reduction in electricity consumption of 5.07%. The total investment was THB 24,000, with a payback period of 0.57 years.
3. Cleaning of the tube bundles of a Climaveneta chiller was also conducted. Prior to the improvement, the chiller consumed a total of 353,358.46 kWh/year, equivalent to THB 1,483,666.66 per year. After the improvement, annual electricity consumption decreased to 335,689.90 kWh/year, equivalent to THB 1,409,480.85 per year, representing a reduction in electricity consumption of 5.00%. The total investment was THB 24,000, with a payback period of 0.32 years.
4. On-Peak Energy Reduction Measures
   Water Pump Optimization (Buildings 2, 3, and 4)
   Adjusted operating schedules (18:00–22:00) to reduce on-peak electricity usage
   Savings: 101,835 kWh/year (THB 491,863/year)
    
5. Cooling Tower and Chiller Optimization
   Reduced operation by shutting down one unit of each system during low-demand periods (18:00–06:00), without affecting cooling performance
   Savings: 353,320 kWh/year (THB 1,706,536/year)
    
6. Chilled Water Pump Optimization
   Reduced operation of one unit during off-peak hours (18:00–06:00)
   Savings: 43,800 kWh/year (THB 211,554/year)

These on-peak energy reduction measures have been continuously implemented since 2023.

Energy Awareness and Maintenance
The Company actively promotes energy-saving practices among employees, encouraging the shutdown of unused lighting and equipment.

In addition, dedicated teams are responsible for the maintenance and optimization of electrical systems to ensure efficient operation and energy conservation.

Performance in 2025

In 2025, the Hospital’s total electricity consumption was 10,487,000 kWh, representing a decrease of 1,192,000 kWh compared to 11,679,000 kWh in 2024. This reduction was mainly attributable to a lower bed occupancy rate, which resulted in reduced overall electricity demand.

In addition, the Hospital implemented various initiatives and management measures to reduce electricity consumption, including campaigns encouraging employees to switch off unnecessary lights and equipment, the use of energy-efficient lighting, optimization of air-conditioning temperature settings, and the installation of solar panels as an alternative energy source.

In 2025, the Company was awarded the MEA Energy Awards 2025 at the Standard Level, reflecting its strong commitment to energy efficiency. This achievement underscores the Company’s ongoing efforts to advance sustainability and enhance its environmental stewardship.

Furthermore, the Company has dedicated teams responsible for the maintenance and upkeep of electrical systems to ensure efficient operation and energy conservation. Management also places strong emphasis on the adoption of renewable energy, including the installation of rooftop solar panels across five buildings, which generate electricity as follows:

Garbage and Waste Management

Effective waste management is a critical aspect of healthcare operations. The Hospital has established a Waste Management Committee to ensure efficient, timely, and compliant handling and disposal of waste. This includes continuous monitoring of waste segregation, storage, collection, handling, transportation, and disposal processes.

Management Approach

1. Waste Segregation at Source
   The Hospital has implemented a waste segregation policy at the source, with clearly defined waste categories, color-coded containers, and standardized labeling. Training programs are regularly conducted to ensure proper waste separation practices.
2. Comprehensive Waste Management Plan
   A structured plan has been developed for managing all types of waste, including chemical and hazardous materials. This covers the entire process from segregation, storage, and collection to transportation and final disposal.
3. Controlled Waste Handling and Transportation
   Dedicated waste carts are used to ensure safe handling, with designated routes and schedules for waste transportation within the Hospital.
4. Improved Waste Storage and External Coordination
   Waste storage areas for general, infectious, and hazardous waste have been upgraded to meet hygiene standards. The Hospital collaborates with authorized external agencies for waste disposal, including the Bangkok Metropolitan Administration, Krungthep Thanakom Co., Ltd., and Akkhi Prakan Public Company Limited.

In addition, infectious and hazardous waste is treated using high-temperature incineration, with operating temperatures not lower than 760°C and 1,000°C, in compliance with the Ministerial Regulation on the Disposal of Infectious Waste B.E. 2545 (2002) issued by the Ministry of Public Health and the Bangkok Metropolitan Administration Regulation on Waste and Sewage Management for Buildings and Healthcare Facilities B.E. 2545 (2002).

Performance in 2025

• The average amount of infectious waste per inpatient day was 10.02 kilograms, a decrease of 0.16 kilograms per day compared to 10.18 kilograms per day in 2024.
• The reduction was primarily due to a decrease in patient volume, resulting in lower waste generation.
• The Hospital generated 59,119 kilograms of recyclable waste, which was transferred to certified recycling partners.
• Revenue from recyclable waste amounted to THB 143,817, which has been allocated for environmental and social initiatives in 2026.

Environmental Awareness Initiatives
The Company also organized the “VIBHA GO GREEN” campaign to encourage patients, visitors, and employees to properly segregate waste in accordance with established guidelines.

Additionally, environmental awareness is incorporated into new employee orientation programs to instill a strong sense of environmental responsibility across the organization.