Message from the Managing Director

In 2025, the world faced significant disruptions across political, social, economic, technological, and environmental dimensions. At COP30 in Brazil, Thailand accelerated its Net Zero target to 2050, moving the timeline forward by 15 years. Domestically, challenges spanning economic, political, financial, technological, natural disaster, and social domains affected public confidence. These events highlight the interconnected nature of risks and reinforce the importance of resilient governance, sustainable practices, and integrated ESG management to ensure long-term value creation.

Amid increasingly complex challenges in 2025, TTW Public Company Limited (TTW) continues to operate its business sustainably while actively managing environmental and social impacts. The company remains committed to the management of water production and maintenance services for the Provincial Waterworks Authority (PWA), as well as water supply and wastewater treatment services for Bang Pa-In Industrial Estate and Amata City Industrial Estates in Chonburi and Rayong.TTW strives to maintain its position as a “Leading Expert in a completely Integrated Water Business, delivering high-quality potable water production and wastewater treatment services in line with international standards, to enhance quality of life and support sustainable societal development.” to continuously meet customer needs and build trust and confidence among customers and water users within its service areas.

TTW places significant emphasis on climate change, recognizing its impact on rising global temperatures. The Company has adopted adaptive measures to address greenhouse gas (GHG) emissions under the framework of this report, titled “Transforming Water into Low-Carbon Products.” TTW remains committed to sustainable organizational development across three dimensions environmental, social, and governance (ESG) demonstrating its dedication to conducting business sustainably throughout the value chain. This approach promotes balance and shared growth while being guided by the United Nations Sustainable Development Goals (SDGs).

Environmental Commitment TTW is committed to reducing greenhouse gas (GHG) emissions from its operations, aiming to achieve net-zero emissions by 2050. The company’s water supply operations have received certification for both organizational carbon footprint and product carbon footprint from the Thailand Greenhouse Gas Management Organization (Public Organization). TTW prioritizes minimizing energy consumption from carbon-intensive sources by adopting clean energy solutions, including rooftop and floating solar panels at water distribution stations and treatment plants, thereby reducing GHG emissions associated with electricity use.

Social Commitment TTW is committed to being a socially responsible organization by treating employees and stakeholders fairly, fostering learning, professional development, and career progression. The company promotes a corporate culture that encourages social responsibility and respect for human rights. TTW implements comprehensive human rights due diligence as a key tool to assess risks and prevent potential human rights violations, in alignment with the United Nations Guiding Principles on Business and Human Rights (UNGPs).

Governance Commitment TTW recognizes the critical importance of strong corporate governance and anti-corruption practices. The company emphasizes efficiency, transparency, fairness, accountability, and compliance with applicable laws, in line with its corporate governance policies and business ethics. Guided by its corporate core values, TTW pursues continuous improvement, proactive initiative, and teamwork to achieve its vision and mission while safeguarding stakeholder satisfaction and interests. The company is committed to elevating its governance practices to internationally recognized standards of excellence.

TTW continues to create business value while advancing environmental and social stewardship, aiming to sustain competitiveness in a rapidly changing world. The company places particular emphasis on enhancing its corporate reputation, building trust among customers and investors through consistently strong business performance. In 2025, TTW achieved notable recognition, including the “Best Company Performance Awards” and “Outstanding Company Performance Awards” from the Stock Exchange of Thailand. The company received a “Very Good” rating in the Corporate Governance Report of Thai Listed Companies from the Thai Institute of Directors Association and earned a perfect score on the AGM Checklist (5 stars) from the Thai Investors Association. TTW’s corporate and bond credit ratings from TRIS Rating have consistently remained at “AA-” with a stable outlook, reflecting strong financial fundamentals and robust cash flow generation. Additionally, TTW was recognized as one of 74 Thai listed companies awarded in the ASEAN Asset Class PLCs under the ASEAN CG Scorecard by the Securities and Exchange Commission and the Thai Institute of Directors Association.

In 2025, TTW achieved notable sustainability recognition, reflecting its strong ESG performance. The company received the highest “AAA” rating under the SET ESG Ratings from the Stock Exchange of Thailand and was honored with the “Sustainability Disclosure Award” from the Thaipat Institute. TTW’s water operations obtained certification for both organizational and product carbon footprints, and the company was recognized as a CALO pilot organization under the LESS initiative by the Thailand Greenhouse Gas Management Organization (Public Organization). Additionally, TTW received a commendation for participating in the “Ting To Trash” waste separation program from the Securities and Exchange Commission and the Thai Listed Companies Association. The company’s S&P Global ESG scores also showed continuous improvement, demonstrating its commitment to sustainable business practices.

On behalf of TTW Public Company Limited, we sincerely thank all stakeholders for their continued trust and support in our business operations. TTW remains committed to its mission as a “comprehensive water solutions expert, delivering high-quality water supply and wastewater treatment services in accordance with international standards, contributing to sustainable social well-being.” The company continues to drive sustainable business growth based on strong corporate governance, social responsibility, and environmental stewardship, aiming to operate sustainably in line with its corporate mission while ensuring equitable benefits and satisfaction for all stakeholders.

Walainat Trivisvavet

Managing Director