The Pollution Control Department (PCD) conducted a comprehensive survey of marine water quality at 210 coastal locations in 2024, revealing that 49% of them had good water quality. Most spots with good water quality are along the Andaman coast.
Preeyaporn Suwanket, PCD director-general, told the press that the department had monitored water quality throughout the year in the Gulf of Thailand and the Andaman Sea. The findings showed:
Preeyaporn said most of the spots with good or acceptable water quality were in the Andaman Sea, while the polluted areas were concentrated in the upper Gulf of Thailand.
Top 10 coastal spots with best water quality:
Top five most polluted coastal spots: