High-Quality Plumbing Installation in Princeton, TX

When you need dependable Plumbing Installation in Princeton, TX, trust Underwood Plumbing and Septic Services LLC to provide quality workmanship and long-lasting plumbing solutions. Whether you are building a new home, renovating your property, or replacing outdated plumbing systems, our experienced team delivers professional installation services designed to meet your needs. We use quality materials, follow industry standards, and ensure every plumbing system is installed for optimal performance, efficiency, and reliability.

Plumbing Emergency? We Answer Day or Night.

Burst pipe in the evening, or a backup on a holiday, we’ll get a truck rolling.

Our Installation Process

Call us:We pick up nights and evenings, holidays included, and get the installation on the schedule.

Walk the job:We look at the existing lines, fixtures, and access before we open a wall or a slab.

Explain your options:You hear the scope and the price before any work starts.

Install it:Fixtures, water lines, drains, and repipes go in with the parts on the truck when the job allows.

Test the work:We run water, check pressure, and look for leaks before we pack up.

Leave it clean:The work area gets cleaned up before we head out.

White farmhouse sink with a gold faucet and a paper towel holder

The Underwood Plumbing Standard

Yes. We provide complete plumbing installation services for new construction homes, additions, remodeling projects, and commercial buildings.

Yes. We replace outdated plumbing systems with modern solutions that improve efficiency, reliability, and overall system performance.

Professional installation helps ensure reliable performance, efficient operation, code compliance, and long-lasting plumbing system durability.

Princeton is in Collin County. We’re already working Princeton, handling calls daily across town. We also cover Collin, Grayson, Fannin, Hunt, Lamar, and Cooke counties.

Yes. Financing is available on larger installations and replacements, subject to credit approval. See our Financing page or ask your plumber.

Why Underwood

We're already working Princeton, handling plumbing and septic calls.

Tankless water heater installed on a wall in McKinney, TX

01

We Communicate.

Nights, evenings, and holidays. We pick up the phone.

Underwood plumber using a wrench on an outdoor hose bib

02

Stocked Trucks, One Trip.

Our vans carry the parts for the installation jobs we actually get called on, so a fixture or a short repipe often finishes on the first visit.

Residential street of brick homes in Melissa, TX

03

Plumbing and Septic, One Call.

A backup can be the line in the wall or the tank in the yard. We handle both on the same call.

Black-and-white photo of two Underwood technicians running a drain machine in a front yard

04

Seasoned Service Professionals

Licensed with the state board, TCEQ registered, and backed by decades of work in DFW and Northeast Texas.

What We Fix

Plumbing Installation, Start to Finish

Underwood plumber at a kitchen island sink with a gold faucet and green cabinets

Financing Available

We offer flexible payment options for our services.

Signs It's Time for New Plumbing Installation

We install plumbing for homes and businesses in Princeton and the rest of Collin County. We’re already working Princeton, handling calls daily across town.

Reviews

Don’t Take Our Word for It. What Our Customers Say.

Google logo for Underwood Plumbing & Septic

Reviews

4.9

(1521 Reviews)

Google
Michael Jeter profile picture
Michael Jeter
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Plumber knew his job and how to fix the problem fast.
Google
Sheldon Nicolle profile picture
Sheldon Nicolle
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Chad came by and did an amazing job. Peace of mind is a valuable thing. Thanks Underwood!!
Google
Saphir Butter profile picture
Saphir Butter
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I needed a sewer tank cover replaced due to it being hit by the lawnmower. These guy fixed it in less than 30 minutes. Chad also suggested putting landscaping stuff around the 4 tanks to prevent this happening again. Totally happy with their service.
Google
Sally May profile picture
Sally May
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great

More Services

We Solve Every Plumbing and Septic Problem.

Plumbing

Repairs, repipes, and installs for every fixture and line in the house.

Septic Service

Inspections, repairs, and installs for tanks and drain fields.

Septic Pumping

Scheduled and emergency pump outs, with a digital report after each visit.

Emergency Plumbing

Burst pipes and backups. We pick up nights, evenings, and holidays.

Sewer

Camera inspection, spot repair, and full sewer line replacement.

Drain

Clogs cleared and hydro jetting that keeps them from coming back.

Water Heater

Tank and tankless repair and replacement.

Water Quality

Filtration, softening, and testing for clean water at every tap.

Commercial Plumbing

Restaurants, shops, and offices kept running with minimal downtime.

Water Line Repair

Leak location, spot repair, and full water line replacement.

Protect Your Home

Generous Membership Plans.

At Underwood, we offer tailored solutions to keep your home and its systems running smoothly. Whether you need memberships to be county compliant or simply maintain your systems for the long haul, we have a plan to fit your needs.

Underwood technician shaking hands with a homeowner at a kitchen table with paperwork

Get in Touch

Ready to Schedule the Installation?

Tell us what’s being installed in Princeton and we’ll get a licensed tech out to you.

Or Skip the Form

Service Areas

Plumbing Installation in Princeton and Across Northeast Texas.

We’re already working Princeton, handling calls daily across town.

Counties We Cover

Princeton sits in Collin County. We cover Collin, Hunt, Grayson, Fannin, Lamar, and Cooke counties. Bryan County, Oklahoma is septic maintenance only.

Not sure whether you’re in range? Give us a call. If we can’t get to you, we’ll point you to someone who can.