Main sewer line clogs in Denver

Where Denver main lines fail

The bungalow belt (Washington Park, Platt Park, Berkeley, Park Hill, Highland) was plumbed with clay sewer laterals in short sections. After 80 to 120 years, roots from mature street trees, shifting soil and simple age open those joints. The lateral typically runs under the front yard and often under the sidewalk and parkway to a main in the street, and in some neighborhoods toward an alley instead.

Post-war ranches in southwest and southeast Denver have newer pipe but often still clay or early cast iron, now sixty-plus years old.

Finding the cleanout in an older Denver home

Many pre-war homes have a cleanout in the basement near the front foundation wall, sometimes behind a finished wall or under a stair. Some have none at all, and the plumber reaches the main by pulling the basement toilet. If you know where your cleanout is, clear the area before the plumber arrives; it saves time and keeps the price at the lower end.

After the line is open

1. 01

   Ask what came out

   Roots and clay fragments point to a structural issue; wipes or grease point to use.

2. 02

   Get it scoped

   A camera run shows whether it's one bad joint or a failing lateral, and how far from the house.

3. 03

   Plan, don't panic

   One root joint can be managed with periodic cutting. Several failing joints may justify lining or replacement; get the video and a written estimate.