Comprehensive residential and commercial plumbing services across the Chicagoland area and Northwest Indiana. Their expertise covers a wide range of solutions, including backwater valve installation, copper piping and conversion, and professional drain cleaning to maintain optimal water flow. They specialize in critical services such as ejector pump replacement, faucet repair, and advanced flood control systems tailored for various homes and budgets.

The company also offers essential safety services like gas leak detection and sewer gas smoke testing, alongside effective sewer maintenance methods like hydro jetting, power rodding, and sewer clean-out. For more complex issues, they provide thorough sewer repair and video inspections. Additionally, O'Neal Plumbing handles spigot repair, sump pump replacement, toilet repair, water heater repair and replacement, and water leak detection, addressing common plumbing challenges for residents in their service regions.