Water Drainage Operations in Rangsit Canal Raise Environmental Concerns
Authorities are actively pumping water from Rangsit Canal into the Chao Phraya River to manage flood levels, but residents report foul odors and dark, foamy water.
As of October 13, 2026, authorities in Pathum Thani are operating pumps at the Pak Khlong Rangsit sluice gate to discharge water from the Rangsit Prayunsak Canal into the Chao Phraya River. This effort aims to lower water levels in the Rangsit area, which have risen by nearly one meter in some residential zones along the canal.
Observations at the site reveal significant amounts of dark, foul-smelling water and thick white foam accumulating near the sluice gate. Local residents report that the foam has been present for several days, occasionally forming large, mountain-like piles. While the constant flow of water helps mitigate the intensity of the odor, the water quality remains a point of concern for those living nearby.
For residents and visitors in the Pathum Thani area, the situation highlights potential environmental issues associated with the current drainage operations. While the pumping is necessary to manage flood risks, the visible pollution and strong odors may affect the immediate vicinity of the canal. It remains to be confirmed what specific substances are contributing to the water's discoloration and foam, and whether authorities will conduct water quality testing to address the concerns raised by the local community.
