United States v. Allwaste Onsite LLC d/b/a Onsite Environmental

On August 5, 2025, Allwaste Onsite LLC d/b/a Onsite Environmental (Onsite) pleaded guilty to violating the Clean Water Act (CWA) for bypassing treatment processes in violation of its pretreatment permit (33 U.S.C. §1319(c)(2)(A)).

Onsite is an environmental management company that provides services related to non-hazardous liquid waste hauling and treatment. The investigation revealed that Onsite bypassed treatment processes and discharged untreated waste products directly into the sewer system at its Nashville facility, in violation of the Nashville Metro Water Services (MWS) pretreatment permit program. Plant supervisors directed employees to send untreated waste directly to the sewer when the equipment was broken or the plant exceeded its capacity to properly process wastes. Those same supervisory employees tried to cover up the illegal discharges by manipulating a sampling device that MWS installed at the facility to monitor the company’s discharges.

Onsite agreed to pay a $512,000 fine (which represents $16,000 per day of bypassing), and to complete a three-year term of probation. As a special term of probation, Onsite must comply with a previous state court Order entered into with MWS to enact a facility operating plan. Additionally, as part of the state court Order, Onsite paid the following: $86,628 to MWS for expenses related to sewer repairs and clean-up, $299,576 for surcharges related to pollutant exceedances, and $50,387 for water and sewer charges, as well as implementing several plant and equipment upgrades.

The U.S. Environmental Protection Agency (EPA) Criminal Investigation Division and EPA Office of Inspector General conducted the investigation.