Camera Inspection After Jetting: Verify the Line

Jetting tells you the water went through. It does not tell you what is still on the pipe wall, and it does not show what the pressure uncovered. A camera after jetting answers three questions: Is the line actually clean? What was the blockage made of? And is the pipe underneath still sound?

The professional standard agrees with that order. NASSCO's guideline for television inspection runs in phases: look, clean if the owner decides it is needed, and then look again to evaluate the condition after all cleaning has been performed. The point of the post-cleaning pass is to verify the work, not to assume it.

The pair is more useful than either half. The first pass records what was there: thick grease, root mass, scale, or a stoppage with no visible cause. The second pass records what the cleaning left. Compare them and you can see:

• A clean pipe wall. The cleaning worked. Any damage is now visible, like cracks, a joint that has slipped or a section that holds water.
• Remaining buildup. The nozzle or pass was not enough. Another pass, a different nozzle or a different tool is the next step.
• Roots. Roots tend to return. The video shows how severe they are and where, which sets how soon to come back.
• Damage hidden by the buildup. Buildup can mask cracks and holes. Clean the pipe and they show, which is why the standards clean before they inspect.

Our jetting work for restaurants runs from inside the building and out to the city sewer, before opening or after close. Maintenance jetting is logged per account, so a camera pass fits naturally into that visit and your records show the line before and after. See hydro jetting and camera inspection after hydro jetting.

Use the video to sort findings into two buckets, the same way NASSCO's grading does.

Maintenance problems are conditions that a cleaning fixes: grease, light scale, soft deposits, some roots. The answer is a schedule. If the line is sound and the buildup rate is steady, repeat jetting on an interval makes sense. Phoenix's own FOG manual points restaurants this way, saying that keeping grease out reduces the need for routine jetting.

Repair problems are structural: a crack, a broken or collapsed section, a bad offset or a belly. Cleaning will not cure these, and the line will keep stopping at the same distance. The right answer is a spot repair or replacement. A line with both gets the repair first, because it is wasted money to clean pipe that is about to fail.

If the video shows the same location blocking after every cleaning, treat that as a repair. See belly in a sewer line and root intrusion grades.

Ask that the report states the date of cleaning, the method used and the distance cleaned, so the after video can be matched to the before video footage for footage. Ask for both clips in the same file format, with the same on-screen footage counter. If the camera could not pass a spot the first time and passes it after cleaning, the report should say so, because that spot is where the blockage was and where to look first if it returns. If something still blocks the camera after cleaning, that is a finding too, and it belongs in the log with a distance.

There is no Phoenix rule that sets an interval for private sewer lines, so the video is your guide. Seattle's utility, for example, suggests re-inspecting minor roots in three to five years and severe roots every one to two years. That is a reference, not a requirement here. In practice the right interval is the one that matches how fast your buildup comes back, and the log shows you that.

For a simple local clog in one fixture, such as a hand sink, you do not need video. If the line has just been scoped and you only cleaned a small section, a full re-scope is overkill. And if the line is clearly collapsed on the first pass, cleaning is pointless and you go straight to repair. See sewer repair.

Tell us whether you want the camera pass added to a cleaning visit or scheduled separately. HQ offers 24/7 emergency service, free estimates and an upfront price before work starts. Also see commercial drain cleaning and sewer camera inspection.