Per Austin Resource Recovery’s 2018 Compost Audit Report, the top 5 contaminants in the City of Austin’s curbside compost collection are: 1) Recyclables (glass, plastics, tin/aluminum, cardboard)2) Clothes/Textiles3) Styrofoam4) Treated Wood 5) Trash The entire Compostable Material Composition Audit is available here. This is the revised report clarifying cardboard’s original listing as a contaminant. It no…