Residential

Drain Cleaning Services

Slow or clogged drains? We clear blockages and restore proper flow—quickly and cleanly.

Clear Drains.
Calm House.

Everything will be okay, we are here to help!

Residential

Drain Cleaning Services

Slow drains, recurring clogs, or a full backup can bring your entire day to a halt. CO-PI Plumbing provides professional residential drain cleaning services, including main line and secondary line cleaning, for homes throughout the Denver & Boulder Metro areas—without the mess or guesswork.

Drain 2

Main Line & Secondary Line Drain Cleaning

Safe for Residential Plumbing Systems

Clean, Respectful In-Home Service

Serving Denver & Boulder Metro Homes

When Drains Don’t Drain, Nothing Works Right

A slow sink might not seem like a big deal—until multiple fixtures start backing up, strange smells appear, or water goes where it shouldn’t. Drain problems rarely fix themselves, and ignoring them can turn a small clog into a bigger, messier issue.

At CO-PI Plumbing, we take a practical approach to drain cleaning. We identify where the blockage is, determine what’s causing it, and clear it safely—so your plumbing works the way it’s supposed to.

Main Line Drain Cleaning

Main line issues affect the entire home. If multiple drains are slow or backing up at once, the blockage may be in the main sewer line connecting your home to the municipal system.

Common signs include:

  • Multiple fixtures backing up
  • Gurgling sounds throughout the house
  • Sewage odors
  • Water backing up in tubs or showers

Secondary Line Drain Cleaning

Secondary lines serve individual fixtures like sinks, tubs, showers, and laundry drains. These clogs are often caused by buildup over time.

Common causes include:

  • Hair and soap residue
  • Grease and food debris
  • Everyday household buildup

We determine the source before clearing the line—no unnecessary work, no shortcuts.

Testimonials

What Clients Say

From minor drips to major disasters, we handle the dirty work so you don’t have to.

You have a customer for life. Big Jim came out and did a great job of getting my kitchen sink, bathroom upstairs and downstairs flowing freely again. I was amazed out how quickly the job was done and when he left everything was cleaner than when he arrived. So hard to find reliable companies nowadays so if you're looking for a well priced and professional plumbing company look no further because you have found them. Thanks again and I will be doing business with you in the future.

Michael Customer

Called these guys for a clogged drain at 7am, by 9:30 we were all cleared and ready to go. Great to work with, will definitely keep them on file for future work!

Amy Customer

These guys are the best! We tried three other places and this was the best price and the best service. I’m big into customer satisfaction, Zac and Jesse truly aim to please. I’ll never need to call anyone else!

Pete Customer

Our Process

How We Clear Drains

Our goal is to fix the issue thoroughly the first time.

Assessment

We identify whether the issue is a main line or secondary line problem.

Targeted Cleaning

We use appropriate methods based on your plumbing system and the blockage.

Flow Testing

We ensure drains are flowing properly before finishing.

Clean Finish

No mess left behind.

Q: What causes residential drains to clog?

Common causes include grease buildup, hair, soap residue, food debris, and tree root intrusion in main sewer lines.

How do I know if the issue is a main line or a secondary line?

If multiple fixtures are affected, it’s often a main line issue. Single-fixture problems usually point to a secondary line. We confirm before clearing.

How often should drains be professionally cleaned?

Preventative drain cleaning can help reduce backups, especially in older homes or homes with frequent clogs.

Will drain cleaning damage my pipes?

No. We use methods appropriate for residential plumbing systems to safely clear blockages.

Do you provide emergency drain cleaning services?

Yes. For urgent drain backups, we recommend calling us directly for immediate assistance.