How to Effectively Clean and Unclog Outdoor Drain Pipes (2024)

Many homes and businesses have outdoor drain systems somewhere on their outside property. The function of any outside drain and/or system is to keep rainwater and melted snow from flooding the yard, home or outdoor property. If there is a driveway, there could also be a drain to keep the driveway surface from flooding during a storm or due to runoff rainwater.

Keeping these outside drains clean and cleared from debris and other materials is an important home and property maintenance chore that all property owners should learn how to perform. The following article will answer how to effectively clean and unclog outdoor drain pipes safely and successfully.

Assess Each Drain, & Look for Obvious Items that Could Be Clogging the Drain

The first step in clearing any type of clog affecting an outdoor drain pipe or other drainage system is to assess each outside property drain and look for obvious signs of items that typically clog these drains. Take a flashlight along to see dark underground holes or pipes better.

Some obvious items that often clog outdoor drains include:

  • High Grass or Other Plants & Weeds Growing Near the Drain Openings or Exits
  • Dirt or Mud Covering the Drainage Holes
  • Debris Like Twigs, Leaves & Rocks that Could Have Been Washed or Blown by Storm Rains or Winds
  • Trash or Litter like Paper, Disposable Cups, Plastic & Other Items
  • Kid's Toys, Teen Sport Equipment or Outdoor Supplies

Safe Ways to Remove Obvious Signs of Debris or Other Material Clogging Up an Outside Drain System

The home or business owner should carefully remove any items or debris that they find covering the entrance or exit drain pipe openings. It is best to use your hands or some type of scoop shaped tool or container in order to remove this debris without pushing it further into the drain itself.

Many outside drain pipes or other types of systems are covered with some kind of screen or grate cover. These screens can easily become clogged up with dirt, mud and other debris from the drainage water that flows through the screens. The property owner should carefully remove these screens or grate covers to better see into the darkened drain tunnel and to rinse the screens thoroughly with water or a pressure hose.

Use your flashlight to reach inside the drain pipe or system opening to carefully remove any debris that is seen or felt right at the entrance. Be sure to not damage the drain pipe itself in the process. Over time, these pipes may become weakened or damaged. This is especially true if the pipes are made from plastic or other breakable material.

The Right Way to Flush Out a Clogged Outside Drainage System

After removing the drain cover screen and obvious dirt and debris present, the property owner should next use a garden hose to flush the entire system properly. This is often the only thing necessary to unclog an outside drainage system.

Many properties will have one or more inspection portals and/or drainage portals located on the grounds. These are often noted near the house itself, and there may be another towards the street or closer to the larger storm sewer drain openings often placed under streets.

While flushing clean water from a garden hose through the drain pipes, the property owner should check to see if the water is flowing out of these farther away portals. This helps to pinpoint whether the clog is inside the underground tunnel or drain or whether it is farther away. If the water is not seen flowing out of these inspection portals towards the sewer drains or other property drainage areas, there may be a more serious situation causing the blockage.

Tips for Inspecting & Clearing a Clogged Outside Drainage Pipe or System

If unsure of where your property drainage pipes or neighborhood storm sewer drains are located, the property owner should contact their local water and sewage company to get these location details.

Property owners can try to clear out a clogged outside drainage pipe by using a hydro-jet or drain snake to effectively clear the stubborn built-up debris or other clog causes.

A hydro-jet drain snake and/or hose is a specialized piece of plumbing equipment that uses high-pressure water jets to thoroughly clear drainage pipes and systems. These can often be rented at a local hardware store. This high-pressure water jet enables the water to spray backwards to move hard-to-dislodge clog materials out of the drain pipe. If this tactic doesn't work, it could indicate the tree roots or another big problem like a broken drainage pipe is the true source of the clog.

What to Do if Tree Roots or a Broken Drainage Pipe is Suspected

Handling the challenges of outside drainage system clogs due to either problems with nearby tree roots causing clogs or pipe damage and breaks can be difficult for even handy property owners to fix.

If trees are located on the property, the roots may have grown towards that drainage pipes in an attempt to draw the water found there to nourish the tree itself. In time, these roots can become very deep and may be actually penetrating the pipe itself causing leaks, cracks and breaks.

Property owners should suspect this scenario if after clearing the drain with powerful pressurized water-jets the drain openings/exits reveal only dirt, mud or stones that are flushing through the underground pipes. This can indicate a severe problem that could involve complicated tree root involvement, and property owners should contact a professional plumber to resolve this problem correctly.

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How to Effectively Clean and Unclog Outdoor Drain Pipes (2024)

FAQs

How to Effectively Clean and Unclog Outdoor Drain Pipes? ›

Find the drain covers and remove them. Reach in and clear away any leaves or gunk at both the entrance and the exit. Then insert your garden hose at the entrance point as far as you can and turn it on to flush out any debris that is in the pipe. Once the water runs clear at the exit, you're done.

How do you unclog an outdoor drain pipe? ›

Find the drain covers and remove them. Reach in and clear away any leaves or gunk at both the entrance and the exit. Then insert your garden hose at the entrance point as far as you can and turn it on to flush out any debris that is in the pipe. Once the water runs clear at the exit, you're done.

How to stop outdoor drains from clogging? ›

Regularly Clear Debris

Leaves, twigs, and other organic matter can accumulate over time and block the flow of water. Make it a habit to remove debris from your gutters, downspouts, and drain covers.

How do you unblock an outside down pipe? ›

If you already have a minor blockage, though, let's take a look at how to clear a blocked downpipe with nothing more than normal household items:
  1. Check for single objects. ...
  2. Get out the garden hose. ...
  3. Do a bit of banging. ...
  4. Move the hose up and down. ...
  5. Try a drain rod. ...
  6. Try a gutter vac. ...
  7. Try some chemicals. ...
  8. Remove/replace the downpipe.
Sep 20, 2021

How do you clear outside drains with roots? ›

5 Ways to Remove Tree Roots in a Sewer Line
  1. Use Rock Salt. Rock salt can pull the moisture from the roots and eventually kill them. ...
  2. Use a Foaming Root Killer. There are products on the market specifically formulated to kill tree roots. ...
  3. Use Copper Sulfate. ...
  4. Inspect, Remove and Repair the Damage. ...
  5. Hire a Professional.
Mar 6, 2023

Why should you never use baking soda and vinegar to unclog a drain? ›

Consistent use of acidic solutions, like vinegar, can accelerate the corrosion of these metal pipes, leading to weakened integrity and potential breaks or leaks over time. The reaction between baking soda and vinegar can also produce salt, which may further contribute to the corrosion process.

What can I pour down my drain to unblock it? ›

Follow these easy steps to unclog your drain:
  1. Start by pouring a pot of boiling water down the drain.
  2. Next, pour a cup of baking soda and 1 cup water/1 cup vinegar solution.
  3. Cover with the drain plug and wait 5 to 10 minutes.
  4. Pour boiling water down the drain again.

How to unclog a clogged drain deep in a pipe? ›

Pouring a cup of baking soda and then a cup of vinegar into a drain pipe can produce a chemical reaction that is sometimes effective at clearing deeper blockages. Make sure to follow up with hot water to melt away any remaining debris.

What will dissolve dirt in a drain? ›

All you need to do is sprinkle some baking soda down the drain and then make white vinegar follow it. But, make sure that you pour down enough quantity of white vinegar. Use snaking: Snaking is also one of the best options because it could clean up the dirt if it is a little far from the drain itself.

What will unclog a drain fast? ›

Add a half cup of vinegar and put something over the drain. Wait half an hour and then pour boiling water into the drain. Dish detergent: For a clogged toilet, pour a quarter cup of dish detergent into the bowl and then pour hot water over it. Use a plunger.

What is the best drain cleaner for outside drains? ›

For solid blocks in your outside drains, use caustic soda to help. We have also provided a step-by-step guide for how to unblock your outside drains with a drain rod or read more about drain rods below.

How to unclog an outdoor drain pipe? ›

The simplest option is to use a drain snake or auger to pierce and break up the clog. If you need something stronger, you can try using high-pressure water from a power washer to force clogs through the pipes. If you use a power washer, be sure to wear gloves as well as eye and ear protection.

What unblocks an outside drain? ›

simply dilute cups of caustic soda in a large bucket of cold water before pouring the solution into the blocked outside drain.

How to tell if an outside drain is blocked? ›

This blog will point out the key signs to look out for before discussing the steps to take when you think your drainage system is clogged.
  1. Slow Drainage. ...
  2. Unpleasant Smells and Odours. ...
  3. Gurgling Sounds Coming from Drains and Plug Holes. ...
  4. Raised Water Levels.
Aug 4, 2023

How do you unclog an outside gutter drain? ›

A Wet/Dry Vacuum Cleaner is also ideal for cleaning clogged downspouts. The suction function of the vacuum cleaner makes it a perfect appliance for cleaning clogs. Insert the nozzle into the downspout, then all you need to do is set the blower mode on, and the vacuum cleaner will do the rest.

Will baking soda and vinegar unclog an outside drain? ›

With time, baking soda and vinegar may work as a natural drain cleaner on weaker drain clogs, and the benefits of regular drain cleaning can help keep your drains free of clogs. But for tough drain clogs that need to be dissolved right away, you may want to use a stronger drain cleaner, like Liquid-Plumr.

How to clean out a 4 inch drain pipe? ›

If you're planning to clean only 4" ID landscape drains, then a competitor's lower-cost, plastic-braided sewer jetter may be sufficient, since these can usually pass through elbows in this size of pipe.

References

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