What happened

A small fire broke out at about 08:00 in the oil-distillation process at DeMenno–Kerdoon, which does business as World Oil Recycling, a used-oil, oily-water and spent-antifreeze treatment facility at 2000 North Alameda Street in Compton. The Compton Fire Department extinguished the fire within an hour. The incident became part of a wider, sustained odor and compliance investigation rather than a major refinery outage: South Coast AQMD traced confirmed post-fire odors reported by nearby Jefferson Elementary School to facility operations and identified possible emissions from a wastewater storage tank using infrared gas imaging. At a 28 July City of Compton community workshop, officials reported more than 120 public complaints since 1 January, 37 field investigations and eight Notices of Violation associated with the facility. South Coast AQMD, the California Department of Toxic Substances Control and Los Angeles County Public Health continued oversight and community updates into late July. The complaint and enforcement totals cover the broader 2026 facility investigation, including conditions before and after the fire; they are not presented as impacts caused solely by the 21 May event. No casualties, quantified off-site toxic exposure, production halt or refinery-scale throughput loss was documented in the reviewed sources.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.