Access the line
A suitable cleanout or fixture access is selected and the camera is advanced to the target area.
Done Right Since 1950 ✦
Sewer Line Locating
Sewer locating uses a camera sonde or compatible transmitter to estimate the route and depth of accessible buried piping from the surface. It helps plan cleaning, excavation, repair, and property improvements, but depth and route readings are estimates affected by soil, interference, equipment, access, and pipe conditions.
Warning Signs & Reasons to Schedule Service
- The sewer route is undocumented.
- A defect needs to be marked for spot repair or excavation.
- A remodel, fence, landscaping, or structure may cross the line.
- Cleanouts, transitions, or property connections need location estimates.
- Camera distance alone is not enough to choose an excavation point.
What the Process Usually Includes
Activate and trace the sonde
Surface equipment follows the transmitted signal and marks route points.
Estimate depth and target
Readings are taken at the defect or planned access area and compared with camera distance and site features.
Document limitations
Marked route, estimated depth, access point, target, and known interference are recorded for planning.
Advice for Common Situations
A sewer locate is not a public utility locate
It identifies the private line being traced and does not replace required utility locating.
Treat depth as an estimate
Final depth is confirmed by exposure, and readings can be affected by interference.
Use multiple route marks
A single point does not show the full alignment or reveal bends.
Preserve the marks and records
Photographs, measurements, and site references help if excavation occurs later.
Sewer Line Locating FAQs
How accurate is sewer locating?
Accuracy varies with depth, soil, equipment, interference, access, and the ability to position the sonde at the exact target.
Can it locate a nonmetallic pipe?
Yes, when a transmitting sonde can be placed inside the pipe.
Can locating show pipe condition?
The camera provides visible condition while the locator estimates route and depth; each serves a different purpose.
Does sewer locating mark the city main?
It generally traces the accessible private line and may not enter or accurately trace the public main.