How Often Should Your Sewer Line Be Cleaned? A Middle Tennessee Homeowner’s Guide

These are the intervals Prodigy publishes on its own pages. They are starting points, not rules, and they don’t all agree, because they were written for different situations.

Prodigy’s drain cleaning page gives the 18-to-24-month and 2-to-3-year figures. Its Franklin pages, Franklin drain cleaning and the Franklin hydrojetting guide, lean toward yearly service where trees and older lines are common. Read the difference as a pattern: the more roots, age, and grease, the shorter the interval.

No national standard sets how often a household sewer line must be cleaned. The closest guidance is municipal: EPA’s material on sanitary sewers says deferring routine maintenance can be more expensive in the long run because it speeds up deterioration. See EPA’s guidance on sanitary sewage and stormwater. For a home, that means the schedule should respond to the pipe’s condition, not a calendar alone.

These are the factors that move your interval up or down:

Prodigy says drain cleaning is operational maintenance that clears buildup, but does not restore structural damage, which takes sewer line repair or trenchless repair. It also says that if a main line backs up again after cleaning, the pipe is likely structurally damaged. That is why a camera matters. Prodigy says every cleaning includes a free post-clean camera check, and its sewer camera inspection shows whether you have a clog or a crack, offset, or collapse.

Camera inspection of a home’s sewer follows an established method. NASSCO, the national pipeline association, says inspections of private building sewers typically start inside or near the building and run down the lateral toward the main, using PACP-based coding. NASSCO describes this in its building sewer and drain inspection program. Prodigy says its technicians are NASSCO/PACP-certified.

Prodigy doesn’t publish a camera interval, and neither will this guide. A practical approach is to keep the footage from each visit and compare it, so you can see whether buildup returns quickly or the pipe is changing.

• Slow drains in more than one fixture
• Gurgling from a toilet or floor drain
• A sewer odor indoors or near the cleanout
• A clog that returns within weeks of being cleared
• A wet or soft spot in the yard along the sewer’s path

Prodigy says the floor drain is the lowest opening in your plumbing, so it is often where a blocked main shows first. For what to do if sewage is already coming up, see Prodigy’s guide to an emergency plumber in Franklin, and for the common causes of backups, its guide to sewer line backup causes.

The two methods do different jobs. Prodigy says cable snaking punches a hole through a clog, while hydro jetting scours the whole pipe wall, which is why it fits recurring grease and root problems. For a blockage across the whole house, Prodigy’s main line drain cleaning page describes its process: a camera to confirm the clog is in the main line, then an auger or jetting, then a post-clean camera pass. Prodigy also says jetting is safe for sound pipes, and that a camera inspection first protects older clay and cast iron lines.

• Roots. Prodigy’s Franklin pages describe chronic root intrusion in the 37064 historic district, where mature canopy meets aging clay and cast iron joints. See its guide to tree roots in sewer lines.
• Shifting soil. Prodigy says the region’s clay-heavy soil moves with wet winters and dry summers, stressing joints.
• Mid-century pipe in Nashville. Prodigy’s pages for Green Hills and Hillwood describe mid-century homes draining through mid-century pipes, including aging cast iron.
• Franklin’s mix of old and new. Prodigy’s Franklin sewer care guide covers local soil, older laterals, and county rules.

You can see Prodigy’s service pages for Franklin and Nashville for the areas it covers.

According to Prodigy’s drain cleaning page, the process ends with a preventative recommendation, which can include an enzyme schedule, a jetting frequency, or an inspection interval. A good visit should leave you with:

• A clean line, with the method matched to the cause
• A post-clean camera pass and the footage
• A written recommendation for when to come back
• An honest answer if the camera finds damage that cleaning can’t fix

Prodigy says most single-fixture and main line cleanings take one visit, typically an hour or two depending on access and severity. See the full list of sewer and drain services or request service.

The best schedule is the one your pipes tell you to follow. To book a cleaning with a camera check, call Prodigy at (615) 914-7349 or request service online.