Michigan’s Department of Environment, Great Lakes, and Energy (EGLE) has enacted new rules to protect state water from farm-based pollution, with a focus on managing the environmental risks of digestate, a toxic byproduct of anaerobic manure digestion. Digestate, produced after manure is processed in an oxygen-free digester, contains chemically altered nitrogen and phosphorus, making these nutrients more likely to seep through soil and contaminate water sources.
The Inflation Reduction Act of 2022 includes incentives to increase methane production through digesters, stirring both support and opposition. Proponents argue digesters create renewable fuel, while critics point to the significant risks to watersheds. In Fremont, Michigan, EGLE found numerous violations at the Generate Fremont Digester in addition to complaints from residents about foul odors and runoff pollution from digestate.
Rural communities are especially disadvantaged, as their watersheds are already impacted by nutrient runoff. These issues extend to other at-risk regions like the Finger Lakes, where harmful algal blooms (HABs) linked to nutrient pollution are on the rise. In planning for the future of the Finger Lakes region and concentrated animal feeding operations (CAFOs), it is essential to ask tough questions: What solutions are available, and what preventative measures will best protect our communities and water resources?
