There are a few key reasons:
– PFAS contamination. There are concerns over PFAS – “forever chemicals” that don’t biodegrade and persist in the environment with potential adverse effects. However, there’s currently no proof that PFAS contamination in compost facilities originate from compostable packaging. PFAS contamination could potentially originate from other sources like biosolids, house dust or industrial waste.
– Leading compostable packaging companies are moving quickly to completely phase out PFAS in production by the end of 2024.
– Contamination from non-compostables. Many non-compostable items are entering the organic recycling waste stream which can create issues in processing and contaminate compost. Some items are mimicking compostable colours and shapes, while others are misleadingly or incorrectly using compostable certification logos. With education, clear labelling and regulations, this issue can be solved and we may see more compostable items become accepted in organic recycling streams.