Southwestern Washington’s Best Sewer and Drain Maintenance

Who We Are

Headquartered in Winlock, Washington, Molecular Sewer and Drain, LLC has sewer repair down to a science. Owner Andy Marshall has more than a decade of reliable service experience under his belt he uses to lead his team throughout Lewis, Cowlitz, and Clark counties in southwestern Washington.

No matter your sewer and drain problems, Molecular Sewer and Drain, LLC is there to help ensure everything you have runs as smoothly as it possibly can.

Drain Maintenance — Winlock, WA — Molecular Sewer and Drain, LLC

Who We Are

Headquartered in Southwestern Washington, Molecular Sewer and Drain has sewer repair down to a science. Originally a division of Molecular Inc. We have been performing trenchless sewer repair for over 15 years. Happily serving the needs of our customers in Lewis, Cowlitz, and Clark counties and beyond!

If you are experiencing any type of sewer or drain issue, give us a call. We have the knowledge, experienced technicians and equipment to solve your problem!

Sewer Line Before and After — Lewis County — Molecular Sewer and Drain, LLC

What We Do

Sewer/Pipe Repair

Having chronic issues or a complete failure in your sewer system? A properly functioning sewer system is a critical component in your home. If you have a problem with your sewer, or suspect that you might, give us a call. We will inspect your system with a high definition camera and locating system. We will diagnose the problem and formulate a solution. You will never have to deal with any high pressure sales or scare tactics. We will explain the situation and provide you with options for repair or maintenance.

Drain Cleaning

Do you have slow drains or a clogged pipe? Give us a call. We will get your system flowing and help you avoid future issues!

Sewer Inspection

Are you thinking about buying or selling a home? Sewer inspection is a great way to avoid costly surprises. As a buyer, you need to know if the sewer is in good shape and functioning properly. As a seller, you will want to be able to get ahead of any issues before your sale gets derailed by an unknown sewer problem.

Sewer Inspections

Let Us Help—Call Today!

Phone: (360) 522-8447 | Email: andy@molecularinc.com

Office Hours: Mon – Fri: 8:00 a.m. – 7:00 p.m.

If after hours, feel free to send an email.

Washington Contractor Lic# MOLECSD786LG

Oregon CCB# 241597

We are licensed, insured and bonded

Service Areas Include

Cowlitz County – Longview, Kelso, Kalama, Castle Rock and the surrounding communities

Lewis County – Centralia, Chehalis, Napavine, Morton, Toledo, Onalaska and the surrounding communities

Clark County – Vancouver, Washougal, Camas, Lewisville, Ridgefield and the surrounding communities

Thurston County – Olympia, Lacey, Tumwater, Yelm, Rochester and the surrounding communities

Wahkiakum County – Cathlamet, Skamokawa, Rosburg, Grays River, Altoona and the surrounding communities

Pacific County – South Bend, Raymond, Long Beach, Ilwaco, Ocean Park Willapa and the surrounding communities