Pollution Control Department summarizes results of water quality measurements of "Kok River - tributaries - Sai River - Mekong River" for the 1st-3rd time, some areas found arsenic levels exceeding the standard.
In the case of the "Kok River" problem with abnormal turbidity, the Pollution Control Department (PCD) collected water samples for the first time on March 19-24, 2025 and April 9, the second time on April 21-24, April 29-May 2, and the third time on May 12-16. The results of water quality analysis according to the surface water quality standards from the first to third sample collections are as follows.