Arsenic Contamination Crisis in Mae Sai Water Supply
Chiang Mai MP Phatthaphong Leelaphat has reported severe arsenic contamination in the Mae Sai River, rendering local tap water unusable and affecting agricultural produce.
According to a report by Khaosod Online, Phatthaphong Leelaphat, a Member of Parliament for Chiang Mai, has highlighted a critical public health issue in the Mae Sai district of Chiang Rai. Testing conducted over the past 18 months has consistently revealed arsenic levels in the Mae Sai River significantly exceeding safety standards, with recent measurements showing levels 28 times higher than the acceptable limit. Additionally, the water turbidity has reached 10,000 NTU, exceeding the treatment capacity of local water facilities, which has forced a suspension of regional tap water production.
The contamination extends beyond the water supply, as the river serves as the primary irrigation source for over 60,000 rai of agricultural land. Reports indicate that rice grown in the area has tested positive for arsenic levels above safety thresholds. Furthermore, medical screenings have identified arsenic in the urine of 79 individuals across Chiang Mai, Chiang Rai, and Mae Hong Son. For residents and visitors, this situation presents significant health concerns regarding water consumption and local food safety. While the immediate impact on water availability is clear, the long-term health implications for the local population and the extent of the contamination in the food supply chain remain subjects of ongoing investigation and public concern.
