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How to Clear a Clogged Drain After Heavy Rain

A single slow fixture may be a local clog, but several slow drains or sewage backing up after rain calls for stopping water use and contacting the right professional.
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First check whether the problem is limited to one fixture or affecting several. A plunger may help with a minor, localized clog, but several slow drains, sewage coming back up, or an overflowing floor drain can signal a sewer or septic-system problem. In those cases, stop using water and contact your local sewer utility or a qualified plumber; keep people and pets away from sewage and floodwater.

Decide whether it is a local clog or a system problem

Heavy rain can expose a drainage problem, but the timing alone does not show where the blockage is or who is responsible for the pipe. Use the pattern of symptoms to choose the next step.

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What you notice What it may indicate What to do
One sink, tub, or toilet drains slowly; no other fixtures are affected A localized clog near the fixture or in its branch drain is possible. Stop unnecessary water use and try only a limited, appropriate plunger attempt. If it is stubborn or returns, contact a plumber.
Several fixtures drain slowly or gurgle, or you notice sewage odors A blockage or overload farther along the sewer or septic system is possible. These are also signs associated with septic malfunction. Do not keep running water to test it. Contact your sewer utility if you have municipal service, or a septic professional if you use septic.
Sewage comes up through a drain, a floor drain overflows, or wastewater is visible outside A sewer backup or failing wastewater system may be involved. Stop using water, avoid the affected area, and call the relevant utility or a qualified plumbing professional.
Wet ground appears near a septic drainfield after rain Saturated soil can interfere with septic operation. Reduce household water use and contact a septic professional or local health department for advice.

What to do for one slow drain

If only one fixture is sluggish and there is no sewage or overflow, keep the response small and cautious. Remove only debris you can reach safely at the drain opening. A plunger can help with a minor blockage close to a sink or tub drain opening, or in a toilet bowl. Follow the plunger’s instructions and stop if the water rises, sewage appears, or other fixtures begin acting up.

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If the clog is stubborn, seems farther into the line, or comes back after a minor attempt, stop and call a plumber. A localized tool such as a hand auger may be appropriate in some confirmed fixture clogs, but it is not a fix for several slow drains or a sewer backup, and the guidance here does not establish a safe homeowner auger procedure for rain-related problems.

#1 Best Overall
Drain Auger, Clog Remover with Drill Adapter, 25 Feet Flexible Plumbing Snake Use Manually or Powered for Kitchen, Bathroom and Shower Sink, Comes with Gloves (orange)
  • Professional: This professional plumbers snake comes complete with 25 ft Steel, more than enough for most household clog, keeping your drains flowing smoothly. In addition, the pipe snake comes with a pair of gloves, which help to keep your hands clean and safe. What's more the springs can be stored in the drum to keep it tidy than conventional drain cleaner.
  • Easy to Use: The sewer snake spring is both flexible and tough to enable you to easily take tight bends, and the large crank knob and grip handle makes it easy to use, our drain snake with drill attachment could Use Manually or Powered(not included drill), which help to remove the blockages more convenient and effective. (NOTE: Need to pull the spring out or feed it back by hand. For sticky and hard clog, please pour in liquid clog remover to loose the blockage before operate the drain auger which will help a better dredging.)
  • Multiple Uses for Tackling Clogs: This snake drain clog remover is professional using for various drains such as kitchen, bathroom, utility sinks, bathtubs, and shower drains, sewer and floor drains. The drain clog hair remover is equipped with special tips for clearing downspouts and even central vacuum lines. (NOTE: For pipe diameter from 1/2" to 3". Not for clog for toilets)
  • Premium Quality: The sink drain clog remover is made of high-impact ABS drum housing for long-lasting durability. The springs are made of high-quality 72A Mn-steel, our shower drain clog remover also offers an upgraded metal mouth to reduce wear, an easy to use stop screw to secure the cable in place.
  • Life Time Support: Suggest to unblock the drain 2-3 month/time to keep it clean. It is better than to spending over hundreds of dollars in liquid drain removals or calling a plumber every time when you meet a clogged drain in your house. This drain cleaner tool is reusable and saving your money and time.

What to do if several drains are slow or sewage is backing up

  1. Stop using water. Do not flush toilets, run taps, shower, or operate water-using appliances to test the system. Additional water can worsen a backup.
  2. Keep people and pets away. Sewage and floodwater may contain contaminants. Avoid contact with wastewater and do not enter a flooded or otherwise hazardous area to inspect a drain.
  3. Contact the right professional. For municipal sewer service, call the local sewer utility and report the symptoms and when they began. Ask how it determines whether the affected section is public or private. For a septic property, contact a septic service provider or local health department.
  4. Follow local emergency guidance around electrical hazards. Do not approach water near electrical equipment; use instructions from local emergency services or the relevant utility.

Why heavy rain can trigger drain trouble

Rain may overload a sewer system when stormwater or groundwater enters defective lines, or when a system’s capacity or equipment is insufficient. Blockages, breaks, roots, fats and oils, some wipes and hygiene products, and improper connections such as sump pumps or roof leaders can also contribute to sewer overflows. A storm can reveal an existing weakness; it does not prove that the clog is inside the house or establish whether a public agency or property owner is responsible.

On a septic property, saturated soil can prevent the drainfield from absorbing wastewater normally. The U.S. Environmental Protection Agency warns that a high water table or flooding that threatens a sewage system can lead to sewage backing up into a home. When soil is saturated or flooding threatens the system, reduce household water use.

Rank #2
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POPULO 20V Cordless Electric Drain Auger-Efficient 25Ft Auto-Feed Drain Snake with Replaceable Cable,2.0Ah Battery,Charger,Storage Bag & Gloves for Kitchen,Bathroom,Shower Pipes (3/4"-2")"
  • Tired of dealing with clogged drains? Our 25-foot cordless drain snake makes cleaning quick and effortless—5 times faster than manual tools and 90% less effort. With up to 60 minutes of runtime on a single charge and a fully retractable cable in just 2 minutes, this powerful and durable tool is perfect for tackling common household clogs. Say goodbye to traditional methods and choose a drain snake that’s truly practical and efficient.
  • All-in-One Plumbing Solution:25 Ft(1/4”) flexible cable is replaceable !Clears clogs with ease from drains from ¾ up to 2 in diameter including sinks, bathtubs,Drainage pipes and showers. Powered forward and reverse feeding mechanism make the cable down or back drains automatically and cable lock setting holds cable in place while tackling tough clogs.
  • Simple Operation & Easy Setup:Designed for beginners and pros, our cordless plumbing snake features step-by-step video tutorials via QR code for a quick learning process. Access replacement parts (cables, batteries, chargers) and after-sales support for maintenance tips—keeping your tool in top shape for years, hassle-free!
  • Pro Tip: Act Early, Save Big!The best time to clear a clog is when water flow slows down. Our drain snake quickly restores functionality, saving you costly repairs up to $200 or more per visit. It’s a reusable, cost-effective solution for routine maintenance, but not for solid blockages like tree roots or rocks. Prevent major issues—act now!
  • Enhanced Comfort and Visibility:Enjoy ergonomic comfort with the rubberized grip handle, designed for long hours of use. The built-in LED work light provides clear visibility in dark or hard-to-reach areas. Additionally, the rear drain port prevents water buildup, keeping the drum clean and ready for the next task.

If the property has a septic system

  • Reduce water use while the soil is saturated or the system is threatened by flooding.
  • Do not pump the septic tank while the drainfield is flooded or saturated. Pumping under those conditions can allow the tank to float and damage its inlet or outlet pipes.
  • If damage is suspected, arrange a professional inspection. Septic tank cleaning and repairs should be handled by trained specialists because tanks can contain dangerous gases.

How to handle a suspected public sewer problem

Call your local utility when several fixtures are affected or sewage is backing up and you have municipal sewer service. Service boundaries and procedures vary. For example, Toronto Water describes investigating the public sewer and then the connected service line; an owner may need a licensed plumber for work on the private side. That is a local example, not a universal division of responsibility. Ask your own utility which section it will inspect and what work, if any, is the property owner’s responsibility.

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Do not use a street storm drain as a household drain

A street storm drain or catch basin is separate from a household fixture. Do not enter it or attempt to clear it yourself. Storm-drain cleaning is municipal or contracted work handled by trained personnel, with debris managed under applicable procedures. Report a blocked public storm drain to the responsible local agency.

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Drain Auger 25 Ft with Gloves, Heavy Duty Plumbing Snake Drain Clog Remover
  • 25 Ft of Flexible Steel Wire Easier to Reach Deeper Clogs: This professional plumbing snake drains auger comes with 25 ft of heavy-duty spring steel cable that goes beyond traps to remove most common household clogs. Highly effective drum auger for unclogging drains and keeping your drains flowing smoothly
  • Easy Operation and Detailed Operating Instructions: The drain snake has an ergonomic pistol grip that simplifies use and makes for more comfortable handling. The flexible spring enable you to reach the sink clogs efficiently. Besides, if you don't know how to use it, the detailed operating instruction will teach you how to do (Warm Note: The spring need to be pulled out and fed back by hand, turn the knob won't extend or retract the spring)
  • Professional and Multiple Use to Clear Most of Clogs: You can flexibly adjust different lengths to adapt to various depths of drain pipes by whirling the screw switch and pulling the springs back and forth. Hence, the plumbing snake drain can be widely used in kitchen sinks, bathtubs, bathroom drains, sewers, and floor drains to solve most of the household clog problem. (Warm Note: Suitable for the pipe diameter from 1/2" to 2.5" and recommended not to use it in the toilet)
  • Easy Storage in Durable ABS Drum Housing: The drain clog remover is made of High-impact ABS drum housing for long-lasting durability. The springs are made of durable carbon steel and can be easily stored in the drum to keep it tidy than others sink auger drain. Besides, the upgraded metal mouth reduces wear and it is simple to secure or loosen cable by adjusting stop screw
  • Reusable Drain Auger Perfect for The Average Household: The drain auger can clear clogged drains easily and safely. Effectively to remove sink clogs which usually caused by grease or overworked garbage disposers. It is better than to spending over hundreds of dollars in liquid drain removals or calling a plumber every time when you meet a clogged drain in your house. It is reusable and saving your money and time
Rank #4
33 Feet Drain Snake Auger, Plumbing Snake Drain Hair Clog Removal Tool, Heavy Duty Drain Snake Auger, Sink Unclogger Drain Cleaner Tool for Bathroom Kitchen Tub Shower Drain Clog Remover with Gloves
  • [33 Ft of Flexible Steel Wire Easier to Reach Difficult Clogs]: This professional plumbing snake drains auger comes with 33 ft of heavy-duty spring steel cable that goes beyond traps to remove most household clogs. Best highly effective drain auger for unclogging drains and keeping your drains flowing smoothly.
  • [Easy Operation and Detailed Operating Instructions]: The drain snake has an ergonomic pistol grip that simplifies use and makes for more comfortable handling. The flexible spring can be bent more than 90 degrees without breaking or kinking, which enable you to reach the sink clogs efficiently. Besides, if you don’t know how to use it, the detailed operating instruction will teach you how easy to do.
  • [Easy Storage in Durable ABS Drum Housing]: The drain clog remover is made of High-impact ABS drum housing for long-lasting durability. The springs are made of high-quality carbon steel and can be easily stored in the drum to keep it tidy than others sink auger drain. Besides, the upgraded metal mouth reduces wear and it is simple to secure or loosen cable by adjusting stop screw.
  • [Professional and Multiple Use to Clear Most of Clogs]: You can flexibly adjust different lengths to adapt to various depths of drain pipes by whirling the screw switch and pulling the springs back and forth. Hence, the plumbing snake drain can be widely used in kitchen sinks, bathtubs, bathroom drains, sewers, and floor drains to solve most of the household clog problem. It is recommended not to use it in the toilet.
  • [Reusable Drain Auger Perfect for The Average Household]: The drain auger can clear clogged drains easily and safely. Effectively to remove sink clogs which usually caused by grease or overworked garbage disposers. It is better than to spending over hundreds of dollars in liquid drain removals or calling a plumber every time when you meet a clogged drain in your house. It is reusable and saving your money and time.
Rank #3
Drain Snake, 25ft Flexible Steel Drain Auger With Drill Adapter, Plumbing Unblocking Hand Auger, Manual Or Powered for Shower & Bathtub Clogs-NOT auto retract or feed
  • Best for Hair, Grease and Soft Clogs: Perfect household tool for quickly unclogging any drain, No matter driven by electric drill which attaches to the spindle, or driven by hand using the knob, Save money than calling plumber. Can't remove tree roots.
  • This drain auger is professional using for various drains such as kitchen, bathroom, utility sinks, bathtubs, and shower drains. sewer and floor drains. 1/4" Dia. Steel Snake It is not recommended to use this drum auger to clear a toilet clog as the snake may damage the porcelain.
  • The Eco-friendly manual drain cleaner is made of high-impact Steel drum housing for long-lasting durability with grip handle for easy use. One for service next few years.
  • WARNING: 1, Keep electric drill speed under 500 RPM; 2, Electric drill work mode, Keep it under 30 mins; 3, There's a yellow tape indication in the end of the wire. That's mean you are going pull it all out. Do not pull it again.
  • Works With Most Standard Drills For Faster Cleaning&Includes Gloves & Easy Start Guide For First-Time Users

What not to try during a rain-related backup

  • Do not keep flushing or running appliances to see whether the backup clears.
  • Do not pour drain chemicals or boiling water into a drain as a presumed fix for a sewer backup. These are not established reliable solutions for this situation.
  • Do not open or pump a flooded septic tank yourself.
  • Do not enter a storm drain or try to plug a drain while sewage is backing up.
  • Do not wade into floodwater or sewage to investigate a drain, especially near electrical equipment.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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