Boulder County · Northern Colorado
Drain Cleaning in Longmont, CO
Longmont mixes a historic core of early 20th-century homes with fast-growing newer neighborhoods. Older houses bring root and clay pipe problems; winter brings frozen drains to both.

Clogged drain in Longmont?
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Longmont homes and their sewer lines
The neighborhoods around Main Street and the historic east side have homes from the late 1800s through the 1940s, many with clay sewer laterals and big trees. The city grew steadily from the 1960s onward, with ranches and split-levels, and since the 1990s with larger subdivisions on the edges.
The St. Vrain River flood in 2013 affected neighborhoods along the river, and some older sewer laterals there carry damage that a camera inspection can reveal.
Longmont drain patterns
Roots in clay laterals drive most repeat main line backups in the older core. In newer homes, kitchen grease and wipes are more common. Longmont's open, windy winters are hard on drains in garages, bonus rooms and exterior walls, and on furnace condensate lines. See frozen drain lines in Longmont.
Call if you notice
- A kitchen or laundry drain freezing during a cold snap
- The furnace shutting off with a frozen condensate line
- Yearly main line backups in an older east-side home
- Slow drains near the river corridor in an older home
- Roots or clay bits on the cable
Longmont drain questions
Why do drains freeze in Longmont?+
Lines in garages, crawlspaces and exterior walls get cold enough during long cold snaps, especially with wind. Furnace condensate lines are also vulnerable.
Are older Longmont homes prone to sewer roots?+
Yes, homes near Main Street and the historic east side often have clay laterals under big trees.
Could the 2013 flood have damaged my sewer line?+
Possibly, if you're near the river corridor. A camera inspection can show silt, offsets or cracks.