TOPP Industries, Inc.

Environmental ServicesIndiana, United States51-200 Employees

TOPP Industries, Inc. is a mid-sized environmental services company based in Rochester, Indiana. It serves the sewage, sump, and wastewater sectors with a broad portfolio of basins and tanks crafted from fiberglass, polyethylene, or structural foam, along with covers, lift stations, septic risers, extensions, and related accessories. Its engineering, design, and production teams develop solutions for these applications, supported by a workforce of engineers, designers, and production specialists.

The firm positions itself within the environmental services industry by delivering fully engineered, American-made products intended to simplify procurement and installation while meeting municipal wastewater standards. In February 2026, TOPP introduced the Flow Base Elbow Rail System, a fully engineered solution designed to meet municipal wastewater standards and streamline implementation.

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