Hydro jetting clears an Annandale main drain or sewer lateral by blasting the inside of the pipe with pressurized water, removing years of scale, grease and root growth. It fits Annandale's older housing well, as long as a camera shows the pipe is still sound. Call the number on this page to be connected with a local plumber in Annandale.
Annandale's older drain lines
Annandale grew fast after World War II, and its median home was built around 1968, one of the older housing stocks in Fairfax County. Many houses still have plumbing from that era: cast iron drains inside, and laterals that have spent more than half a century under yards with mature trees. Cast iron builds up a rough, scaly lining that grabs grease and paper, and older lateral joints give roots a way in. Those are the clogs that come back a few weeks after a cable job.
Annandale is unincorporated, so Fairfax County's Department of Public Works and Environmental Services owns the public sewer mains. The lateral running from the house to the main is the owner's to maintain, and the County doesn't locate or mark it. If sewage rises when nothing in the house is running, call the County's 24-hour line at 703-323-1211 before calling anyone else.
How the two methods compare
| Question | Drain snake | Hydro jetting |
|---|---|---|
| What it removes | The plug at one spot | Scale, grease and roots along the whole run |
| Older cast iron | Fine for spot clearing | Fine on sound pipe, at reduced pressure |
| Root intrusions | Cuts a narrow channel | Cuts roots back to the joint and flushes them |
| How long it lasts | Often weeks on a scaled line | Usually much longer, since the walls are clean |
Signs your lateral needs attention
- A basement floor drain or laundry tub fills when toilets flush
- Root fragments come up on the cable
- Slow drains on the lowest level, all at once
- A soggy or smelly spot in the yard along the sewer path
Timing
Roots are most active from spring into early fall, so lines with a root history often slow down in summer. Scheduling a cleaning and camera run in early spring can head off a backup during the season's heavy thunderstorms. If the camera finds a cracked or collapsed section, repair or replacement goes through a Fairfax County Land Development Services permit, and a plumber can explain the options, from a spot repair to relining. Ask for a copy of the video either way; it gives you a baseline to compare against the next time the line slows down.
Hydro Jetting questions in Annandale
Can a jetter damage an old cast iron or clay sewer pipe?
Do tree roots come back after a line is jetted?
Is a camera look worth adding before or after jetting?
How do I find out who runs the sewer at my address?
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