Preferred Plumbing LLC

O'Fallon, IL — Construction & Trades. ﻿ Welcome to Preferred Plumbing – Your Trusted Local Plumbers in O'Fallon, Illinois Since 1992. For over 33 years, Preferred Plumbing has been proudly serving O'Fallon, Edwardsville, Shiloh, Belleville, Lebanon, Troy, Swansea, Collinsville, Maryville, Glen Carbon, Mascoutah, Fairview Heights, and the surrounding Metro-East communities with honest, high-quality plumbing services. Founded in 1992...