EPA investigates industrial stormwater pollution in Hillside, N.J.

The U.S. Environmental Protection Agency is investigating industrial pollution in Hillside, New Jersey, after receiving a public complaint about an odorous, slimy residue in a tributary of the Elizabeth River. The investigation focuses on unauthorized discharges to the municipal separate storm sewer system (MS4) that ultimately reach surface waters.

Following the complaint in October 2025, EPA conducted a series of inspections and, with support from the New Jersey Department of Environmental Protection, initiated a “track down study” to trace contamination back to its source. Initial findings identified a fruit and vegetable warehouse operated by Gargiulo Produce as one source of the pollution.

“Challenges to our waterways demand immediate attention, and EPA is prepared to act decisively,” said EPA Regional Administrator Michael Martucci in a press release. “This is a classic example of how a community tip and our partnership with the state can halt pollution in its tracks and help protect the environment.”

EPA inspections found improper drainage systems at the facility that allowed food waste and leachate from an on-site waste compactor to discharge into the Hillside MS4. On February 5, 2026, EPA issued an administrative order under the Clean Water Act requiring Gargiulo Produce to immediately stop the discharge, obtain appropriate industrial stormwater permits, and implement control measures to ensure compliance.

EPA reported that the unauthorized discharge has stopped and that the company is working on longer-term solutions. The agency’s track down study and inspections are ongoing to identify any additional sources contributing to pollution in the Elizabeth River tributary.