PUC Designates Perham Waste-to-Energy Carbon-Free; Study Shows 99.6 to 99.97% PFAS Destruction

The Minnesota Public Utilities Commission has designated the Perham Resource Recovery Facility carbon-free, and an independent study released alongside that decision found high-temperature incineration at tested plants destroys 99.6 to 99.97 percent of PFAS in municipal trash. The designation and study affect Otter Tail County residents who rely on the Perham facility for regional waste disposal and who have long voiced concerns about water and air quality.

The designation and study findings were published January 20, 2026. The study was funded by the Minnesota Resource Recovery Association and conducted by Barr Engineering with testing by Eurofins Laboratories. Researchers reported that nearly all PFAS were destroyed by combustion, very little PFAS remained in ash, and measured air emissions were below Minnesota health guidelines. The research focused on waste-to-energy operations similar to the Perham Resource Recovery Facility, which serves multiple counties including Otter Tail and produces steam sold to local industry.

The Minnesota Public Utilities Commission based its carbon-free determination on a life-cycle analysis that compared incineration to landfilling. The analysis concluded that incineration, when accounting for avoided methane emissions from landfills, represents a lower environmental-impact option for managing municipal solid waste. Landfills produce methane, a potent greenhouse gas, during the decomposition of organics, and the PUC decision reflects that trade-off in its ruling.

Local officials and county solid-waste administrators have framed the study as an important piece of evidence about PFAS management. Per- and polyfluoroalkyl substances are persistent chemicals that have contaminated water supplies and posed public health concerns in communities across Minnesota. The study’s finding that high-temperature combustion destroys the vast majority of PFAS speaks directly to risks associated with both air emissions and residual ash disposal.

Becker County commissioners reacted positively at their board meeting following the study and the PUC decision, signaling regional policy support for continued use of waste-to-energy capacity. The Perham Resource Recovery Facility’s role in selling steam to nearby industry also underscores its local economic footprint and the facility’s integration into county infrastructure and manufacturing supply chains.

For Otter Tail County residents, the combined PUC designation and study results are likely to influence conversations about future waste management choices, local water protection, and the oversight of combustion facilities. Continued monitoring of emissions, ash handling, and groundwater near disposal sites will remain critical as regulators and county officials translate study results into day-to-day public health protections. The Perham facility’s new status and the PFAS data shift the debate toward operational safeguards and long-term environmental monitoring rather than simply disposal method alone.