Hey there! Let‘s tackle that sewer smell in your sump pump

I know how unpleasant and concerning those sewage smells coming from your sump pump can be. But don‘t worry – we‘ll get rid of that odor and keep it from coming back! This common problem happens when debris builds up, pipes get clogged, or the pump fails to work properly. With some troubleshooting and maintenance, we can solve this stinky situation.

In this detailed guide, I’ll walk you step-by-step through inspecting, cleaning, and modifying your sump pump system to remove sewer smells for good. With my home renovation experience, we’ll also look at how to prevent future odors through regular upkeep and installation best practices. Let’s dive in!

Start by inspecting the sump pit

The first place to look for the source of any foul sewage smells is right down in the sump pit. Here’s what to check:

• Remove debris – Use a spoon or net to scoop out any dirt, leaves, sediment or other debris that may have collected in the bottom of the pit. Rotting organic matter can produce those unpleasant odors.
• Check for cracks – Scan the sump basin walls and floor for any cracks or damage using a flashlight. Fissures allow groundwater seepage, bringing contaminants into the pit. If you find cracks, seal them up with hydraulic cement.
• Assess the liner – Make sure the sump pit liner is free of holes or wear which could also let in sediments and erode the surrounding soil. Repair any liner damage to prevent subsidence.
• Look for water intrusion – Water seeping in from outdoors could be carrying foul odors. Fix outdoor drainage and slope ground away from the house.

Thoroughly cleaning and inspecting the sump basin removes one potential source of those sewer smells you’ve been experiencing.

Give the sump pump itself a good scrubbing

Now it’s time to clean the pump. Follow these steps:

• Unplug the sump pump and lift it out of the pit. Use a garden hose to rinse off the exterior.
• Take the pump apart according to the manufacturer’s directions. Remove the volute case and inspect the impeller.
• Use an old toothbrush to scrub the impeller blades clean of debris like grit or sludge. Check for cracks or damage too.
• Soak all pump components in a diluted bleach solution (1 part bleach to 10 parts water) for 15 minutes to disinfect.
• Rinse everything thoroughly with clean water and reassemble once fully dry.

Cleaning your sump pump regularly prevents accumulated grime that can cause those sewage smells. Aim to scrub down the pump at least once a year.

Treat the sump pit to remove odors

To tackle any lingering smells inside the sump basin itself, there are a few deodorizing and cleaning options:

• Baking soda – Sprinkle a layer of baking soda across the pit bottom. The baking soda will absorb and neutralize unpleasant odors. Let sit overnight before rinsing out.
• White vinegar – Use a funnel to pour 2-3 cups of distilled white vinegar into the pit. The acidic vinegar helps break down waste matter and eliminates odors. Let sit for several hours before flushing out.
• Oxygen bleach – Mix 1 cup bleach powder with a gallon of hot water. Carefully pour the solution into the pit, wearing gloves and eye protection. Rinse thoroughly after a few hours. This disinfects and deodorizes.
• Enzyme cleaner – Look for a septic tank enzyme cleaner containing bacteria. The natural enzymes will digest organic waste. Follow the product’s directions.
• Activated charcoal – Charcoal absorbs and traps odors. Use charcoal briquettes or a hanging charcoal basket made for sump pits. Replace the charcoal every 2-3 months.

Regular treatments help remove any “pong” coming from inside the sump basin itself. I recommend treating the pit 2-3 times per year.

Inspect the discharge line

Let’s check out the discharge line too. Clogs here can force foul water back up into the pit. Here’s how to inspect:

• Carefully examine the entire discharge line for cracks, disconnected joints, clogs or kinks.
• Use a discharge line cleaner to clear out any gunk or obstructions.
• Repair any damaged sections of the plastic piping.
• Make sure the line isn’t blocked or submerged where it exits outdoors.
• Consider installing a check valve to prevent backflow if you don’t have one.

Keeping the discharge line clear prevents icky backflow and eliminates another potential source of those nasty sewer smells.

Check for plumbing leaks

Sewer gases can also seep into the sump basin from outside cracks and leaks in your home’s plumbing. Here are two ways a pro plumber can check for leaks:

• Smoke testing – Plumbers seal off pipes then pump non-toxic smoke into the system. Escaping smoke indicates leaks which can then be sealed.
• Dye testing – Colored dye is flushed down toilets or drains. The plumber then checks piping for any colored streaks showing smaller leaks.

Repairing any pipe cracks or loose joints prevents sewer gas intrusion into the groundwater surrounding your sump pit. This can contribute to unpleasant pit odors.

Improve ventilation

Adding more air circulation in your basement helps whisk away any lingering sewer smells coming from the sump pit area. Here are a few easy ways to ventilate:

• Remove the sump pump lid when operating to improve air flow in and out of the pit.
• Open any windows or doors leading outdoors to let fresh air move through.
• Install an air vent pipe running vertically from the sump lid up through the roof to improve airflow.
• Use fans directing air outside to actively push any odors out of your basement.

Better ventilation means sewer gases have less chance to accumulate around the pit. And that means less chance of getting a whiff of unpleasant smells.

Call in pro help for persistent smells

If you’ve tried all these troubleshooting steps and the stinky sewage smell persists, it’s probably time to call a professional for help diagnosing the issue.

Here are two specialists who can track down hard-to-find causes:

• A plumber can methodically inspect all your home’s plumbing for any hidden cracks or pipe leaks allowing sewer gases to seep out. They can also snake out stubborn drain clogs you can’t clear yourself.
• Septic professionals can check for problems in your home’s septic system or with local drainage that could be contributing to sump pump odors. Issues on neighboring properties can sometimes affect your pit.

While unpleasant, sewage scents coming from your sump pump should never be ignored. Staying on top of cleaning and maintenance can resolve many cases. But don’t hesitate to call in an expert if smells persist after troubleshooting.

Let me know if any section needs more detail! Now let’s go over some common pit odor questions.

Here are answers to some frequently asked questions about eliminating unpleasant sewer odors coming from the sump pit:

How do you clean a smelly sump pump?

• Unplug the pump and hose off exterior mud or debris
• Disassemble and soak components in diluted bleach solution
• Scrub inside the pump body and impeller with a toothbrush
• Rinse all parts completely before reassembling

Can I pour vinegar in my sump pump?

Nope! The acidic vinegar can damage metal pump parts. Instead, pour vinegar down into the pit itself to break down odors. Let it work for a few hours before rinsing out the basin.

How do you neutralize sewer smell?

• Pour baking soda or vinegar down drains to eliminate odors
• Clean out stinky sink/tub drains and replace cracked traps
• Make sure all drains have functioning P-traps
• Use enzyme cleaners and oxygen bleach in the sump pit
• Install vents and fans to improve air flow

Why does my sump pump smell like sewer?

• There’s likely a clog forcing sewage back up the discharge line
• Nearby drain pipes may have cracks or leaks allowing gas intrusion
• The pump has an obstruction causing stagnant water and overheating
• Debris or organic matter is decaying in the pit

Is bleach safe for sump pump cleaning?

Bleach is safe for cleaning if used correctly. Never pour straight bleach into the pit. Make a diluted solution – 1 part bleach to 10 parts water. Limit contact with metal parts. Rinse pump parts very thoroughly after soaking. Never mix bleach with vinegar.

Will sewage smell eventually disappear on its own?

Nope, sewer odors need to be actively eliminated at the source. Clean drains, repair pipe leaks, improve ventilation, and disinfect the pump/pit. Persistent bad smells indicate an underlying issue needing professional diagnosis and repair.

Let me know if you need any clarification or have additional questions!

The best odor defense is a good preventative offense. Here are pro tips for sump pump maintenance that helps avoid sewage smells:

Keep the sump pit clean

• Remove any debris, leaves or sediment at least twice per year
• Check pit walls for cracks annually and repair any damage
• Treat walls with enzyme cleaners or oxygen bleach 2-3 times a year

Maintain the pump

• Clear any impeller obstructions like rocks or grit
• Disassemble and scrub pump components once per year
• Replace worn seals, bearings and other parts

Don‘t ignore the discharge line

• Inspect for clogs yearly and flush the line
• Install a check valve to prevent backflow into pit
• Repair any damaged or disconnected sections

Choose a reliable pump

According to sump pump reviews, the Wayne CDU800 and Zoeller M53 Mighty-Mate rank among the top pumps recommended by plumbers due to reliable construction and longevity.

Install a proper pit cover

• Select a tight-sealing lid with an airtight gasket
• Make sure the cover has adequate venting
• Replace loose-fitting covers that allow gas leaks

Ensure drainage slopes away from home

• Use downspout extenders to prevent roof runoff pooling at foundation
• Regrade soil if yard drainage slopes back toward house
• Fill any low spots or depressions near foundation

Taking preventative action avoids so many stinky sump pump headaches down the road. Stay on top of maintenance before problems arise! Let me know if any part of your sump system still gives you trouble.