O'Connor Plumbing

Who we are

At O'Connor Plumbing, we are a family-owned and operated plumbing company that has served the Greater Washington area since 1949. What began as a small family business has grown into a trusted local contractor with offices in Frederick and Germantown, while still operating with the same hands-on values that built our reputation. Our owner, Tom O'Connor, grew up in the business working with his father, George, a Master Plumber, and remains active in shaping how we train and support our technicians.

What we do

We provide both commercial and residential plumbing services across the Greater Washington region, including Maryland, Washington, D. C. , and parts of Virginia.

On the commercial side, we handle services such as backflow work, drain maintenance, hydro jetting, pipe and sewer lining, trenching, riser replacements, leak repair, fixture replacements, and water heaters for businesses and property managers. On the residential side, we install and service systems such as tank and heat pump water heaters, water treatment equipment, gas lines, garbage disposals, and main water shutoff valves.

Working at O'Connor Plumbing

At O'Connor Plumbing, we are a family-owned company that is focused on long-term career growth, skill development, and professionalism. We offer a guaranteed 40-hour work week for listed plumbing roles, invest in internal training programs, and create advancement opportunities as we grow across Frederick, Germantown, and the wider DMV market. Our team culture also includes paid team-building events, a four-year apprenticeship pathway for high school seniors, uniforms and PPE for the field, and clear expectations around integrity, professionalism, and quality craftsmanship.

Team Benefits

• 401(k) matching

• Dental insurance

• Health insurance

• Life insurance

• Paid holidays

• Paid time off

• Supplemental insurance

• Vision insurance