Compost is a nutrient-rich material (soil amendment) created by the natural decomposition of organic materials such as food scraps, yard trimmings, manure, and agricultural waste. Through controlled biological processes involving microbes, oxygen, and moisture, these materials break down into a stable product that can be used to enrich soil, improve plant growth, decrease stormwater runoff, and reduce the need for chemical fertilizers.
Composting helps manage organic waste sustainably, reduces greenhouse gas emissions, conserves water, and supports local green industries.
In 2024, organic materials such as food residuals and yard trimmings made up around 26% of all municipal solid waste generated in the United States.
Composting Facility Regulations, Permitting and Guidance
Permits are required for most commercial composting operations. The Maryland Department of the Environment (MDE) is in the process of reissuing General Composting Facility Permit (GCFP). Below is the draft GCFP available for public comment for 30 days. All new revisions or additions to the permit are in RED text. Your comments must be received by MDE no later than April 5, 2026 at [email protected]. In addition to the draft GCFP, below are relevant regulations, permitting documents, and guidance:
