Oil-contaminated wastewater in Khlong Toey has been traced to a Bangchak Group fuel pipeline on Chuea Phloeng Road, after more than a week of inspections. The energy ministry says the operator and pipeline owner are liable for all damage. Repairs and a 32 km pigging test are required, and any irregularity means operations stop. For a Thai SME, the practical impact is limited: expect road works and possible access or smell disruption near Rama III bridge and Yannawa, and avoid assuming the area is clear until the official tests finish.