Minnesota Wastewater Plant Gets EPA Nod for Dust Reduction
Published Date: 5/14/2026
Rule
Summary
The EPA is giving a thumbs-up to Minnesota’s plan to cut tiny dust pollution (PM10) from the Metropolitan Council Wastewater Treatment Plant in Ramsey County. This means cleaner air for the community thanks to stricter limits on dust from the plant’s equipment. The new rules kick in on June 15, 2026, helping protect health without extra costs for the plant.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
Reduced PM10 Limits at Metro Plant
The EPA approved lower allowable emissions of particulate matter less than 10 microns (PM10) from the Metropolitan Council Wastewater Treatment Plant in Ramsey County, Minnesota. The revision decreases PM10 emission limits for Fluidized Bed Incinerators (EQUI 3, EQUI 4, EQUI 5), auxiliary boilers (EQUI 10, EQUI 11), and the ash loadout vacuum (EQUI 50) and includes ash-handling changes; the approval (Permit No. 12300053-102) becomes federally enforceable on June 15, 2026.
EPA Certifies No Major Small-Biz Costs
The EPA states this rulemaking is expected to affect only one source (the MCES Metro Plant) and has certified under the Regulatory Flexibility Act that it will not have a significant economic impact on a substantial number of small entities. The Agency also notes the action does not impose requirements beyond those imposed by State law; the rule is effective June 15, 2026.
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