IEAT Orders Urgent Cleanup of Wastewater at Map Ta Phut Industrial Estate

The Industrial Estate Authority of Thailand (IEAT) has issued an urgent directive to tenants at the Map Ta Phut Industrial Estate following the discovery of wastewater containing high levels of acid and heavy metals, including zinc, in concrete storage pits. IEAT Governor Sumeth Tangprasert confirmed that while these substances exceed standard safety thresholds, there is currently no evidence of leakage into the surrounding soil or groundwater. To mitigate risks, the IEAT has mandated that tenants immediately begin pumping the wastewater into secure, appropriate storage containers, prioritizing uncovered pits. Tenants are strictly prohibited from moving the waste off-site without legal authorization. The IEAT has requested a detailed action plan and timeline for the cleanup, with a formal briefing scheduled for November 9, 2026. For residents and visitors in the Rayong area, this situation highlights ongoing environmental monitoring efforts. The Rayong Provincial Industry Office has collected additional water samples for analysis, and the IEAT plans to engage an independent third party to conduct further soil and water testing by November 9, 2026. Both current and former operators have been ordered to provide evidence and explanations regarding the source of the contamination within three days. While the situation is currently contained within the industrial site, further updates are expected following the upcoming inspections and the submission of operator reports.