How Often Should You Clean Your Sewer Lines?
Quick answer: As a general guide, most residential sewer lines benefit from cleaning every one to three years — more often (every 1–2 years) if you have mature trees over the line or a history of clogs. Grease-heavy commercial lines, like those in restaurants, often need cleaning annually or semi-annually. The right interval depends on your pipe's condition, tree-root exposure, and usage, which a camera inspection helps you gauge.
Residential intervals
A typical home with no special risk factors may only need sewer cleaning every few years. But homes with mature trees over the lateral, older cast-iron or clay pipes, or a history of recurring clogs benefit from more frequent jetting — every one to two years — to stay ahead of roots and buildup.
The honest answer is that 'how often' depends entirely on your specific line, so think in terms of risk factors rather than a fixed number. A newer home with modern pipe, no big trees nearby, and no clog history sits at the low-frequency end — every few years, or simply when symptoms appear. Stack up risk factors — an aging lateral, a tree-lined lot, a past backup — and the sensible interval tightens toward every one to two years to stay ahead of trouble.
What shortens the interval
A few factors reliably mean more frequent cleaning. Mature trees over the line are the biggest: roots regrow continuously, so a root-prone lateral often needs jetting every year or two regardless of anything else. Aging clay or cast-iron pipe that scales and roughens accumulates buildup faster than smooth modern PVC. And heavy household habits — lots of grease, a busy garbage disposal — load a line more quickly. The more of these apply, the shorter your interval should be.
Commercial intervals
Commercial lines work harder and clog faster. Restaurants and grease-heavy kitchens often jet quarterly to semi-annually; other commercial buildings annually. A camera inspection and your clog history are the best guides to the right schedule.
The driver on the commercial side is volume, especially grease. A busy restaurant kitchen can rebuild a grease layer in a matter of months, which is why those lines are jetted on a tight quarterly-to-semi-annual cadence rather than waited on. Lighter commercial use — an office building, a retail space without a kitchen — can stretch toward annual. As with homes, the right number is the one that keeps the line reliably clear without over-servicing it.
Let the line tell you
Rather than guessing, let the evidence set your schedule. A camera inspection shows the actual condition of your line and how fast it's accumulating buildup, and your clog history tells you whether the current interval is working — a line that re-clogs is asking for more frequent attention, while one that stays clear can stretch. The goal is to spend the minimum needed to avoid backups, not to clean on an arbitrary calendar. Call (207) 419-2600 to figure out the right interval for your line.
When to call a professional
If a clog keeps returning, more than one drain is slow, or you're dealing with backups, odors, or roots, it's time for a professional look. A camera inspection pinpoints the cause and confirms whether hydro jetting is the right fix — call (207) 419-2600 for fast local service in Sterling Heights and nearby Metro Detroit.