Licensed Plumber in Round Rock, TX

CMM Plumbing LLC is proud to serve homeowners and businesses across Round Rock and Central Texas with over 20 years of experience. From the established neighborhoods near downtown to the newer subdivisions off US-79, our skilled plumbing team provides fast, friendly plumbing solutions—whether you're facing a midnight leak at home or planning a plumbing project for a growing business. Give us a call anytime at (737) 233-1822 for reliable, on-site service.

CMM Plumbing LLC proudly offers a 2-year warranty on labor for all completed work.

Round Rock is one of the larger and more established suburbs in the Austin metro, and that maturity shows in the variety of plumbing work we do here. It's a city built on a mix of long-standing residential neighborhoods, a strong commercial and corporate presence anchored by major employers, and continued new development on its outer edges. At CMM Plumbing, we've worked across all three long enough to know what each one tends to need.

• Established Residential Neighborhoods throughout Round Rock — many built decades ago and now reaching the age where original plumbing starts to show its wear. We regularly handle aging galvanized and copper piping, water heater replacements, slow drains, and slab leaks in these older homes. Alongside them sit newer subdivisions with modern plumbing that still needs routine maintenance, fixture upgrades, and the occasional installation issue sorted out.
• Commercial & Corporate Properties make up a growing share of our Round Rock work, given the city's role as home to Dell Technologies' headquarters and a wide range of other employers, office parks, and retail centers. Commercial plumbing calls here often involve backflow testing, water heater service for larger systems, drain and sewer line maintenance, and fast turnaround repairs that keep a business running without unnecessary downtime.
• New Construction & Continued Growth define much of Round Rock today, as the city continues to be one of the larger and more established suburbs in the Austin metro. We support builders, remodelers, and homeowners moving into newer developments with rough-in plumbing, fixture installation, and inspections that keep projects on schedule and up to code.

No matter what part of Round Rock you're in, our goal is the same: show up on time, communicate clearly, and fix the problem the right way — so you're not dealing with the same issue again a few weeks later.

• Plumbing Maintenance: Plumbing issues rarely happen out of nowhere — they build up over time. Our plumbing maintenance helps catch small problems early, like slow drains, worn valves, pressure issues, and minor leaks, before they turn into expensive repairs. It's a great option for homeowners, landlords, and businesses who want fewer surprises.
• Drain Cleaning: Slow drains and recurring clogs are usually caused by grease, soap buildup, hard water scaling, or debris trapped in the line. We clear kitchen, bathroom, and main sewer drains thoroughly so the problem doesn't come right back. Most drain issues can be resolved in a single visit.
• Sewer Repair and Replacement: If multiple drains are backing up or you're dealing with repeated clogs, the issue may be in the main sewer line. In Austin, tree roots and aging sewer lines are common causes of sewer damage. We diagnose the problem, explain repair options clearly, and restore proper flow as quickly as possible.
• Leak Detection and Repair: Leaks aren't always obvious — many show up as higher water bills, damp spots, low water pressure, or the sound of running water when nothing is on. We locate the source of the leak and repair it properly to prevent water damage and mold. Whether it's under a sink or behind a wall, we focus on accurate diagnosis first.
• Repiping Services: Older plumbing systems can lead to frequent leaks, low pressure, discolored water, or repeated pipe repairs. Repiping replaces failing lines with new, reliable piping designed to last. We walk you through the best approach for your home and complete the work with minimal disruption.
• Sump Pump Services: A sump pump is your first line of defense against flooding when heavy rain hits. We install, maintain, and repair sump pumps to help protect basements, crawl spaces, and low-lying areas from water intrusion. If your pump fails, we can diagnose the issue quickly and restore protection.
• Water Heater Repair and Replacement: Hot water problems are often caused by sediment buildup, worn components, or hard water damage — especially in Austin. We repair and replace both tank and tankless water heaters, and we help you choose the right unit for your household's needs. Many repairs can be completed the same day.
• Fixture Repair and Installation: Dripping faucets, loose fixtures, and leaking showerheads waste water and can drive up your bill over time. We repair and install sinks, faucets, shower fixtures, and more — making sure everything is sealed correctly and working the way it should. It's one of the fastest ways to improve comfort and prevent damage.
• Backflow Testing and Prevention: Backflow issues can allow contaminated water to flow into the clean water supply, which is why testing and prevention are so important. We provide backflow testing, repairs, and prevention solutions for homes and commercial properties. Our goal is to keep your water supply safe and code-compliant.
• Hydro Jetting: Some clogs are too severe for standard drain clearing — especially when grease, roots, or heavy buildup are involved. Hydro jetting uses high-pressure water to fully clean the inside of sewer lines and restore proper flow. It's one of the most effective solutions for recurring drain and sewer problems.
• Water Treatment and Filtration: Austin's water can be tough on plumbing, appliances, and fixtures due to mineral content and hard water buildup. We install and maintain water filtration and treatment systems to improve water quality and reduce scaling. Cleaner water can also help extend the life of your plumbing system.
• Toilet Repair and Installation: A running toilet, weak flush, or frequent clogs usually points to worn internal parts or a deeper drain issue. We repair common toilet problems and install new toilets with proper sealing and leak prevention. In many cases, toilet repairs can be handled in one visit.

1. Discovery & Consultation

We begin with a detailed phone or on-site consultation to understand your needs and goals—whether it's a clogged kitchen sink in an older Round Rock home or installing a water line for a commercial property near a corporate campus. We take the time to listen, ask the right questions, and assess your current plumbing situation so we can recommend the best solution.

2. Design & Proposal

Once we've identified the issue or project scope, we prepare a transparent, itemized estimate with a clear timeline. You'll know exactly what to expect before any work begins—no surprises, just honest communication and professional planning.

3. Permitting & Preparation

For larger jobs like water heater replacements, remodel plumbing, or gas line installation, we handle all necessary permits with the City of Round Rock or Williamson County. We also take steps to prepare your space—laying protective coverings and ensuring the work area is clean and safe.

4. Professional Execution

Our licensed, certified plumbers carry out the work with precision and care. We arrive on time, work efficiently, respect your space, and follow all local codes and best practices to deliver lasting results you can trust.

5. Quality Check & Walkthrough

When the job is complete, we perform a thorough inspection to make sure everything meets our quality standards. We then walk you through the finished work, answer your questions, and share helpful tips for maintenance or care.

6. Post-Project Support

Our relationship doesn't end when the tools are packed up. If you have questions, need adjustments, or want to schedule future maintenance, our team is just a call away. We're here to support you long after the job is done.

Contact us to schedule your service or consultation. Experience Round Rock's trusted plumbing partner.

CMM Plumbing LLC has proudly served Central Texas since 2012, and Round Rock is one of the communities we've come to know well. As one of the larger and more established suburbs in the Austin metro, Round Rock has grown into a city with real economic weight — it's home to Dell Technologies' corporate headquarters, one of the region's largest employers, along with a wide mix of other businesses that have followed. That growth has brought newer neighborhoods and commercial development, but the city has held onto a strong sense of identity along the way.

We also enjoy the city's personality outside of work. Kalahari Resorts brings a year-round destination for families and visitors, and the Round Rock Express, the city's minor league baseball team, gives the community a hometown team to rally around every season. The historic downtown area still carries the small-town character that shaped Round Rock long before the corporate campuses arrived, with local shops and restaurants that give the city a genuine sense of place.

Serving a city with this kind of range — longtime residents, growing businesses, and new families moving in every year — keeps our work varied and our team sharp. We're proud to be a trusted plumbing partner for Round Rock as it continues to grow.

• Deep Local Knowledge: With roots in Central Texas, we understand the plumbing challenges Round Rock homeowners and businesses face — from hard water scaling to older infrastructure, slab foundations, and tree root intrusion in sewer lines.
• Certified Expertise: Our team is trained and certified in advanced systems like Navien and Rinnai tankless water heaters, along with gas line and water line installations — so your work is completed safely and correctly.
• Permits & Code Compliance: When a plumbing project requires it, we can help handle permits and ensure work is completed to meet City of Round Rock requirements — especially for replacements, upgrades, and remodel plumbing.
• Reliable Emergency Service: We're available 24/7 for plumbing emergencies and prioritize fast response across the greater Round Rock area to help prevent water damage and costly repairs.
• Transparent Pricing: We provide upfront estimates with no hidden fees, so you know exactly what to expect before any work begins.
• Proven Local Reputation: CMM Plumbing is backed by strong local reviews from Central Texas homeowners and businesses who value clear communication, professionalism, and quality workmanship.
• Strong Work Ethic: Our licensed plumbers are respectful, efficient, and dedicated to delivering high-quality results that stand the test of time.
• Customer-Focused Approach: From first call to final walkthrough, we focus on clear communication, dependable service, and your total satisfaction.

We've completed hundreds of plumbing jobs across Round Rock and surrounding communities, and we're proud to be the team local homeowners and businesses call when they want the job done right.

CMM Plumbing is synonymous with 5-star service, consistently exceeding expectations with our exceptional craftsmanship, customer care, and timely response to every call.

We proudly service the following cities and neighborhoods:

• Round Rock
• Austin
• Cedar Park
• Del Valle
• Buda
• Driftwood
• Taylor
• Dripping Springs
• Georgetown
• Hutto
• Kyle
• Leander
• Liberty Hill
• Manchaca
• Manor
• Pflugerville
• Spicewood
• Elgin
• Coupland

Not seeing your area? Give us a call at (737) 233-1822

CMM Plumbing provides the full range of residential and commercial plumbing services throughout Round Rock and the surrounding area:

• New Construction Plumbing
• Residential Plumbing
• Commercial Plumbing
• Camera Inspections
• Drain Cleaning
• Gas Lines
• Remodeling
• Water Heaters
• Tankless Water Heater
• Emergency Plumbers
• House Leaks
• Plumbing Maintenance
• Sewer Repair and Replacement
• Repiping Services
• Sump Pump Services
• Fixture Repair and Installation
• Backflow Testing and Prevention
• Hydro Jetting
• Water Treatment and Filtration
• Toilet Repair and Installation