No. WHAUP-CS014-2562 1 8 August 2019 Re Share Acquisition in Duong River Surface Water Plant JSC in Vietnam Dear President The Stock Exchange of Thailand WHA Utilities and Power Public Company

Reduction Target 19 Environmental Performance TARGETS 2020 PERFORMANCE 2020 Total Energy Consumption Total Water Withdrawal Key Performance: As a Responsible Corporate Citizen Total Waste Generation Total

as of December 31, 2018, and the combining the value of asset acquisition during the past 6 months is equal to 1.35% 2. The disposition of ordinary shares of Bright Blue Water Corporation Ltd. (“BBW

-1- November 29, 2018 Subject Change of payment method for investment in acquisition and sale of tap water in some areas of Phuket and some areas of Phangnga. To Director and Manager The Stock

in distribution of product and equipment, design, assembly and installation and maintenance service of pure water treatment system; as well as dialysis service of clinic business for kidney patients

purchasing of raw water agreement for the Cold Aseptic Filling Line 2 and Line 4 for PET Bottles Projects (the CAF Project) located at Salaeng Phan sub-district, Wang Muang district, Saraburi province. These

. To: President The Stock Exchange of Thailand The Board of Directors of Eastern Water Resources Development and Management Public Company Limited (“Company / EASTW”) at the meeting No.9/2020 held on May

% Profit attributable to Owners of the Parent 2,251.9 1,980.9 13.7% Normalized Profit attributable to Owners of the Parent5 2,267.8 1,406.6 61.2% 1 Operating Revenue consists of Raw Water Sales, Industrial

attributable to Owners of the Parent6 394.2 465.5 -15.3% 1 Operating Revenue consists of Raw Water Sales, Industrial Water Sales, and Wastewater Treatment Services. 2 Other Utilities Revenue consists of

Profit attributable to Owners of the Parent 32.55 465.6 433.0 1,330.5 1 Operating Revenue consists of Raw Water Sales, Industrial Water Sales, and Wastewater Treatment Services. 2 Other Incomes from