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About
Armstrong Plumbing is your trusted local plumber in O'Fallon, Missouri. Specializing in residential plumbing, they handle emergency repairs, leak detection, drain cleaning, water heater installation and repair, and pipe and fixture replacements—delivering practical, long-lasting solutions for every home. With a 4.8/5 rating from 88 reviews, Armstrong Plumbing stands out for dependable service, transparent pricing, and meticulous workmanship. Licensed and insured, the team combines precise diagnostics with respectful, on-time work and thorough cleanups, making it easy for homeowners to get back to normal quickly. For clear communication, quality results, and a job done right the first time, Armstrong Plumbing is the trusted choice in O'Fallon.