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Question DetailsAsked on 9/24/2017

My drains are backed up and i have a pool of water forming under my mobile home. What is causing this?

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1 Answer


You said it - backing up - or a broken pipe.

The backup could be due to a buildup of solids and grease and soap scum in the pipes over a long time (sewer lines commonly need cleaning out every 10-20 years), a one-time blockage (especially if due to foreign material in the toilet like a toy or shampoo bottle or such), or possibly (if in an area with recent flooding) due to a backup of water in the public sewers or a flooded / over-saturated septic system. On the latter - if the surrounding water level is high the sewers could be actually backing up to your house - otherwise, high water levels (in sewer or leach field) can result in your flushed water coming to a screeching halt when it hits standing water in the pipes, causing your solids to settle out and build up in your pipes and plug them. Common in flooded areas, especially if your house was unused (with no flushing or laundry water going down) for a number of days, giving an over-full (and possibly flood debris-filled) public sewer solids a chance to back up into your pipe connection. Over high groundwater from flooding of a leach field/septic tank can also cause this - immersing the inlet pipe under water level, promoting blockages in the drain line to the septic tank.

Also, if your mobile home underwen tflooding, could be a damaged pipe because your home shifted in the flooding, or some debris hit the sewer pipe below the trailer and damaged it - possibly offsetting or crimping a flexible connection, for instance - or denting/kinking the pipe due to impact of flood debris.

You need to call a Drain Cleaning contractor or Plumber to clear it out - and with the pool of water (which presumably smells of sewage) sounds like a backed up septic system (if you have that) or broken pipe - so a Plumber with a minimum 50' drain snake might be the better way to go, or at leat be sure the drain cleaning company also does drain/waste line repairs if you choose them, so they can both clear any blockage and fix any broken line they find. Obviously, if water is falling under the trailer when you run water, then the problem is likely above-ground and a plumber is probably your better choice. if it looks like the water is coming up out of the ground, then a Sewer and Drain Cleaning contractor would be my choice.

NOTE - if there was flooding around your trailer, if not able to check it out yourself, be sure to ask if he sees any signs under there that it has shifted on its foundation - you might need a relevelling/realingment and tiedown repair as well if so.

Answered 3 years ago by LCD

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