Sewer Camera Inspection and Report

Purpose

The camera is not the deliverable. The deliverable is a report that lets a second person, months later, dig in one place and find what the first person saw. That takes three things the video alone does not carry: a distance measured from a stated reference point, a surface mark verified with the sonde, and the pipe size and material written down. A shop that skips them sells the customer a video of a dark pipe, and then eats the difference when the excavation opens 9 ft off the defect.

Scope

Covers a push-camera inspection of a residential building sewer or branch drain, from a cleanout, a pulled fixture or a vent, ending with a written report and marked locations.

It does NOT cover clearing the line, which the drain cleaning service standard owns, or jetting, which has its own standard and its own pipe-condition gate. It does not cover entry into any manhole, vault or lift station: that is permit-required confined space work under 29 CFR 1910.146 for general industry and 29 CFR 1926 Subpart AA on construction sites, requiring atmospheric testing, an attendant and retrieval equipment, and it is not performed under this procedure at all.

Roles and the handoff

The handoff that fails quietly: the tech narrates the defect on video and never writes a distance, so the estimator quotes from an impression. Every number below exists to stop that.

Procedure

1. Establish why the inspection is being run and pick the access accordingly. A pre-purchase survey, a recurring backup and a post-repair verification want different runs. Acceptance: the stated purpose written on the ticket before the reel comes off the truck. Preferred access is an exterior cleanout, second a pulled water closet, last a vent. Do not run a camera from a roof vent without fall protection: that trigger is 4 ft for general industry work under 29 CFR 1910.28 and 6 ft on construction under 29 CFR 1926.501, and the split follows the activity, not the building.

2. Set up for wastewater and for electricity near water before opening anything. Reel powered through a GFCI-protected receptacle, drop cloth and containment under the access, nitrile gloves and splash goggles on, nothing eaten or drunk on site, hands washed before leaving. Opening a cleanout on a surcharged line can release sewer gas including hydrogen sulfide: open it standing upwind with the cap cracked slowly, ventilate the space, and if the line is under head, let it relieve before your face goes over the opening.

3. Prove the counter and the sonde before insertion. Zero the footage counter with the camera head at the face of the access, and confirm the sonde transmits by picking it up with the locator at a few feet on the ground. Acceptance: counter reading zero at the access face, locator showing a clean peak. Wrong looks like a sonde with a dead battery, which you will only discover at 60 ft in: change it now, because a run without a locate produces footage nobody can act on.

4. Record pipe size and material at entry, then again at every change. Read it at the access and note transitions as they pass: cast iron to clay, clay to ABS, a size change at a former repair. Acceptance: entry size in inches and material named on the report. Wrong looks like a report that says "sewer line" with no material, which leaves the estimator unable to tell whether the fix is a spot repair, a liner or a full replacement.

5. Push at a controlled pace and narrate what the reference point is. Slow enough to read joints, taps and the water line, stopping at each feature. Acceptance: a spoken or written note at each joint offset, tap, transition, root entry and standing-water section, each with its counter distance. Wrong looks like a fast push producing 90 seconds of smeared lens: back up, wipe the head against the pipe wall or flush water down the line, and re-run that section.

6. Measure standing water against the pipe as a fraction, not as an impression. Where water stands in a section, note the depth against the known pipe diameter, for example about a third of a 4 in pipe. Acceptance: a fraction or depth recorded with the counter distance at the low point. Wrong looks like "there is a belly": that phrase sells a repair without proving one, and a belly holding a third of the pipe is a different conversation than a film of water on a joint.

7. Locate every actionable defect on the surface and mark it. Park the sonde at the defect, locate from the surface, and mark with paint or a flag plus a measurement from two fixed features such as a foundation corner and a driveway edge. Acceptance: painted mark, depth reading, and two tie-off measurements written down, because paint on a lawn does not survive a week of weather.

8. Capture stills with the counter visible in frame. One image per defect, plus one at the entry and one at the termination. Acceptance: each still legibly shows the footage counter. Wrong looks like a beautiful image of a root ball with no distance in frame, which is indistinguishable from any other root ball when the customer forwards it to a second bidder.

9. Run to a defined end point and say what it was. Either the main connection, a blockage that stops the head, or the reel's usable length. Acceptance: end distance and the reason recorded. Wrong looks like a report ending at 63 ft with no explanation, which reads to a buyer's inspector as an inspection that was abandoned.

10. Verify distance repeatability before you write the report. Retrieve the head, re-zero at the access face, and re-run to the primary defect. Acceptance: the two distances agree within about 2 ft. Wrong looks like a gap larger than that: stop, do not issue a report carrying a distance nobody can dig to, find whether the counter was zeroed inside the pipe or the cable slipped the measuring wheel, and re-run.

11. Give the customer the plain-language read and the honest limits. Say what was seen, at what distance, in what material, and say what a camera cannot tell you: pipe wall thickness, whether a crack goes through, and what is under a section full of water. Acceptance: recommendation stated with its uncertainty out loud. Wrong looks like a full replacement recommended off a single obscured section, which is the reputation risk this trade carries and does not need.

When the camera will not go

Three stalls, three landings. The head stops at a hard offset or a collapse: that is a finding, not a failure. Locate the stop point, mark it, photograph the counter, and report the line as inspected to that distance with the reason. The line is full and the lens shows only water: nothing seen is nothing to report; either clear the line first under the drain cleaning standard and return, or write the inspection as incomplete and do not charge for a survey that produced no information. The only access is a toilet the customer does not want pulled: explain what a vent run gives up in image quality and reach, get the decision in their words, and record it. In every case the report says what was not seen, because the gap is what the next person needs most.

The record this produces

One inspection report attached to the property record, not just the job:

• Purpose of the inspection and the access point used, with the counter reference face named
• Pipe size and material at entry and at every transition, with distances
• Each defect: type, counter distance, surface mark, depth, and two tie-off measurements
• Standing water sections with depth as a fraction of pipe diameter
• End distance and the reason the run stopped
• Video file plus one still per defect with the counter visible
• The repeatability check: both distances to the primary defect
• The plain-language recommendation and the stated limits

The estimator digs from it. A buyer's agent or an insurer may read it years later. The next tech running the same line compares defect distances and sees whether a root intrusion is growing.

Worked pass: recurring backup, 1960s house, clay lateral

Access: exterior cleanout at the foundation. Purpose written on the ticket as recurring backup, twice in six months.

• Steps 1 to 3: cleanout access, GFCI reel, counter zeroed at the cleanout face, sonde confirmed on the ground.
• Step 4: 4 in cast iron at entry, transitioning to 4 in clay at 12 ft.
• Steps 5 to 6: joint offsets noted at 22 ft and 33 ft; root intrusion at a joint read at 41 ft on the counter; standing water about a third of the pipe from 44 ft to 52 ft.
• Step 7: sonde parked at the root intrusion, located to a point 3 ft off the driveway edge at 4.5 ft depth, marked and tied off to the foundation corner and the driveway edge.
• Steps 8 to 9: stills captured with the counter in frame; run ended at 71 ft at the property line where the head would not pass a second offset.
• Step 10: FAILED. Re-zeroed at the cleanout face and re-ran: the same root intrusion read 50 ft, against 41 ft on the first pass, a 9 ft gap against a 2 ft tolerance. Stop rule taken: report held, no numbers issued. The cause was the first run being zeroed after the head was already fed through the cleanout riser and around the sweep, so the first 9 ft never crossed the measuring wheel. Third run from a properly zeroed start read 50 ft again, and the surface locate re-shot from 50 ft landed 8 ft further down the driveway than the first mark.

The first mark would have put the excavation almost entirely on the wrong side of the driveway edge, which on that lot means cutting concrete that did not need cutting and finding nothing under it. The report went out with 50 ft, both tie-off measurements, the depth, and a note that the section from 44 ft to 52 ft holds water so the wall condition there is unknown until it is exposed.

References

• NASSCO Pipeline Assessment Certification Program coding, in the version your certified operator holds, where the customer or a municipality expects standardized defect codes
• 29 CFR 1910.146 for permit-required confined spaces in general industry, and 29 CFR 1926 Subpart AA on construction sites, both of which put manholes and vaults outside this procedure
• 29 CFR 1910.28 and 29 CFR 1926.501 for fall protection triggers, which fork by activity rather than by building type
• Camera and locator manufacturer documentation for counter calibration and sonde depth accuracy
• See related: the drain cleaning service standard and the hydro jetting service standard