Miller Environmental Group, backed by private‑equity firm Coalesce Capital, has closed a deal to acquire Central Ohio Oil, a Columbus‑based waste‑treatment and recycling operator. The transaction adds a full suite of processing capabilities to Miller’s existing service platform, deepening its presence in the Midwest market.

The purchase follows a rapid rollout of acquisitions for Miller, which recently added Haz‑Mat Environmental Services, Canco and ACE Environmental to its portfolio. By integrating Central Ohio Oil’s treatment facilities, Miller can offer end‑to‑end solutions from collection through disposal, positioning the firm to capture larger contracts with industrial customers seeking consolidated providers.

Industry observers note that the move reflects a broader consolidation trend among environmental services firms seeking scale to offset rising regulatory costs. Miller’s expanded footprint now spans multiple states, giving it leverage in negotiations with both municipal regulators and private sector clients.

With the deal now finalized, Miller is set to streamline operations across its new assets, aiming for cost synergies and improved service reliability. The acquisition solidifies Miller’s status as a growing mid‑market player capable of competing with larger national firms.