How Often to Clean Your Sewer Line

One of the questions we get most often from Metro Detroit homeowners is a simple one: how often should I have my sewer line cleaned? The honest answer is that it depends on several factors specific to your property, but there are general guidelines that apply to most homes in the region, and knowing them can save you from a costly emergency backup.

The General Rule: Every 18 to 22 Months

For a typical Metro Detroit home with mature trees in the yard or adjacent public right-of-way, cleaning the sewer lateral every 18 to 22 months is a reasonable preventive schedule. This interval is short enough to remove root growth before it becomes a blocking problem, and long enough to be cost-effective for most property owners. If you have never had your sewer cleaned and your home is more than 20 years old, a one-time cleaning and camera inspection is the right starting point.

Factors That Require More Frequent Cleaning

Several conditions mean your line needs attention more often than the standard interval:

Large trees near the sewer line. Oaks, maples, elms, and willows are particularly aggressive at sending roots into sewer laterals. If you have mature trees whose root systems pass near your lateral, annual cleaning is often the better approach.

Clay pipe laterals. Clay tile pipe has more joint openings per foot of pipe than modern PVC, giving roots more entry points. Clay is extremely common in homes throughout Detroit, Dearborn, Livonia, Warren, and the surrounding area that were built before 1980. If you have clay pipe, more frequent cleaning extends its functional life.

Commercial kitchens or high-use residential properties. Grease accumulates proportionally to use. A restaurant or multi-family property whose drains carry heavy food waste needs cleaning every six to twelve months to prevent grease-caused blockages.

Previous backups. If you have had a sewer backup in the past, your line has already demonstrated that it is susceptible to blockage. Treating it as high-priority and cleaning it annually until a camera inspection shows conditions that suggest longer intervals are safe is the conservative and typically correct approach.

When Camera Inspection Changes the Calculus

For homeowners who want a data-driven answer rather than a general schedule, video camera inspection provides one. By running a camera through your lateral, Detroit Sewer Co. can assess the actual condition of the pipe: root density, grease layer thickness, joint condition, and whether there are belly sections where debris collects. With that information in hand, we can recommend a cleaning interval based on what is actually inside your pipe rather than a general rule of thumb.

Camera inspection is also strongly recommended before purchasing a home. A sewer lateral inspection is one of the most valuable pre-purchase checks a buyer can make, because lateral repair or replacement can cost thousands of dollars and is not typically covered by standard home inspections.

What Happens If You Wait Too Long

The consequences of going too long without sewer cleaning are predictable: a backup. In Metro Detroit homes with basement floor drains or finished basements, a backup can mean significant water damage and the cost and disruption of cleanup on top of the emergency service call. The math on prevention versus emergency response strongly favors scheduled maintenance.

Detroit Sewer Co. serves all of Metro Detroit with professional sewer cleaning, root removal, hydro jetting, and camera inspection. Text us any time at 734-556-2035 to schedule service or get an immediate response to an emergency.