What to Do When Sewage Backs Up Into Your Home

Sewage backing up into a toilet, bathtub, shower or floor drain is more than an unpleasant mess. It is a septic or plumbing emergency that can expose your family to harmful microorganisms and cause significant damage to flooring, drywall, furniture and other materials.

If sewage is entering your home, act quickly—but do not put yourself at risk. Stop using water, keep everyone away from the contaminated area and contact a septic professional to identify and correct the source of the backup.

What Should You Do Immediately?

1. Stop Using Water Throughout the House

Stop flushing toilets and do not run sinks, showers, washing machines or dishwashers. Every gallon of water sent down a drain can add pressure to the system and force more sewage into your home.

Make sure everyone in the household understands that the plumbing cannot be used until the problem has been evaluated.

2. Keep People and Pets Away

Sewage can contain bacteria, viruses and other contaminants. Close off the affected area and keep children, pets and anyone with a weakened immune system away from it.

Avoid direct contact with contaminated water and do not walk through it unless absolutely necessary. The EPA advises homeowners to avoid contact with sewage and contact a septic service provider or local health department when a system backs up.

3. Watch for Electrical Hazards

Do not enter standing water if it is near outlets, appliances, extension cords or electrical equipment. Never touch a breaker, switch or appliance while standing in water.

If electrical equipment has gotten wet and you cannot safely reach the breaker without crossing contaminated water, leave the area and contact a qualified electrician or emergency authority. CDC electrical-safety guidance recommends having a professional disconnect power when reaching the electrical panel would require entering standing water.

4. Call for Emergency Septic Service

Contact a septic professional as soon as possible. The system needs to be evaluated to determine whether the backup was caused by a full tank, blocked line, pump failure, clogged filter or drain-field problem.

Anything Outdoors Septic & Excavating provides emergency septic service throughout Howell, Livingston County and surrounding Michigan communities.

Call (517) 295-7757 for help with an active septic backup.

5. Document the Damage

Take photographs and videos from a safe location before moving or discarding damaged materials. Document which rooms, fixtures and belongings were affected.

Contact your homeowners insurance company to determine whether sewage-backup damage is covered under your policy. Coverage varies, and some policies require a separate water or sewer-backup endorsement.

What Causes Sewage to Back Up Into a Home?

A backup means wastewater is unable to move normally away from your home. Several septic and plumbing problems can cause this.

A Full Septic Tank

As solids accumulate inside a septic tank, the system has less available capacity. If the tank becomes too full, wastewater can begin moving backward through the plumbing.

A full tank may cause warning signs before a complete backup, including:

• Slow drains throughout the house

• Gurgling toilets

• Sewage odors

• Toilets that do not flush properly

• Water appearing in a bathtub or floor drain

• Wet areas near the tank or drain field

If accumulated sludge and solids are causing the restriction, septic tank pumping may restore capacity and allow the system to function normally again.

A Blocked Main Line

Every household drain eventually connects to the main line leading to the septic tank. Wipes, grease, excessive toilet paper, foreign objects, roots or a damaged pipe can obstruct that line.

Because lower fixtures are often the first place wastewater can escape, sewage may appear in a basement floor drain, shower or bathtub when an upstairs toilet is flushed or the washing machine drains.

The tank may need to be pumped to provide access, but the line itself may also require augering, jetting, camera inspection or repair.

A Clogged Effluent Filter

Many septic tanks have an effluent filter near the outlet. It helps prevent solids from entering and damaging the drain field.

If the filter becomes clogged, wastewater may not leave the tank efficiently. The liquid level can rise until drainage slows or sewage backs up into the home.

A professional can clean the filter and inspect the system for conditions that caused it to become obstructed.

A Failed Septic Pump or Float

Some septic systems use a pump to move wastewater between tanks or into the drain field. A failed pump, float, control panel or electrical connection can cause wastewater to accumulate.

A septic alarm may sound before the system backs up. If your alarm activates, reduce water use immediately and request service. Do not repeatedly reset the alarm and continue using the plumbing.

A Saturated or Failing Drain Field

The drain field receives liquid wastewater from the septic tank and disperses it into the soil. If the soil is saturated or the drain field can no longer accept wastewater, the entire system may begin backing up.

Drain-field problems may be associated with:

• Heavy rain or flooding

• Excessive household water use

• Solids escaping from an overfilled tank

• Soil compaction

• Root intrusion

• System age

• Damaged distribution components

• Long-term biomat accumulation

Standing water, sewage odors, spongy soil or unusually green grass over the drain field may accompany the backup.

Pumping can create temporary room inside the tank, but it does not permanently repair a failing drain field. A complete system evaluation is needed to determine the appropriate solution.

Is It a Septic Backup or a Localized Plumbing Clog?

The number and location of affected fixtures can provide useful clues.

If one toilet or sink is affected while every other fixture drains normally, the problem may be a localized clog.

A septic or main-line problem becomes more likely when:

• Multiple drains are slow

• Several toilets are gurgling

• Sewage appears in the lowest drain

• Using one fixture causes wastewater to enter another

• A septic alarm is sounding

• The tank is overdue for pumping

• Problems developed after heavy rain

• Wet or foul-smelling areas appear outside

Do not continue testing the plumbing by flushing toilets or running additional water. That can make the backup worse.

Will Pumping the Septic Tank Stop the Backup?

Pumping may solve the immediate problem when the tank is full of accumulated solids. It can also allow the technician to inspect the inlet, outlet, baffles, filter and liquid level.

However, pumping does not fix every sewage backup. Additional service may be required if the underlying cause is:

• A clogged or collapsed line

• A failed pump or float

• A blocked effluent filter

• A damaged septic tank component

• A saturated or failing drain field

• A plumbing obstruction inside the home

Anything Outdoors Septic & Excavating provides septic pumping, tank cleaning, diagnostics, line locating, camera inspections and comprehensive septic and sewer services to identify the actual source of the problem.

How Should Sewage Damage Be Cleaned?

The septic or plumbing problem should be corrected before cleanup begins. Otherwise, additional wastewater may enter the area.

Professional water-damage or sewage-remediation service is generally the safest option when:

• The backup covers a large area

• Sewage has soaked drywall, carpeting, padding or insulation

• Contaminated water entered heating or cooling components

• Electrical equipment was exposed

• The affected area cannot be isolated

• Someone in the home has a weakened immune system

• You do not have appropriate protective equipment

The CDC recommends rubber boots, rubber gloves and eye protection when sewage is involved. Porous materials that cannot be thoroughly cleaned and dried may need to be discarded.

Never mix bleach with ammonia, drain cleaner or another cleaning product. Follow product-label instructions, ventilate the area when it is safe to do so and wash exposed skin and contaminated clothing thoroughly.

Contact your local health department or a professional restoration company for guidance when you are uncertain whether the area can be safely cleaned.

What Should You Avoid Doing?

During an active sewage backup, do not:

• Continue flushing toilets

• Run the washing machine or dishwasher

• Take showers or drain bathtubs

• Pour chemical drain cleaner into the plumbing

• Add septic additives and expect them to clear the backup

• Open or enter the septic tank

• Walk through contaminated water unnecessarily

• Use electrical equipment near standing water

• Attempt to pump sewage with ordinary household equipment

• Allow children or pets into the affected area

These actions can increase contamination, worsen the backup or expose you to additional hazards.

Frequently Asked Questions

Is sewage backing up into a home an emergency?

Yes. Stop using water and contact a septic or plumbing professional promptly. Sewage can damage the home and may contain organisms capable of causing illness.

Why is sewage coming up through my bathtub?

Bathtubs, showers and floor drains are often among the lowest plumbing openings in a home. When the main line or septic system cannot accept wastewater, sewage may emerge through the lowest available fixture.

Can heavy rain cause a septic backup?

Yes. Heavy rain can saturate the soil around the drain field and reduce its ability to absorb wastewater. Limit water use and have the system evaluated if slow drains, odors, standing water or a backup develop during or after heavy rainfall.

Can I use my upstairs bathroom if the backup is in the basement?

No. All household drains may connect to the same septic system. Using an upstairs toilet, sink or shower can send more wastewater toward the obstruction and force additional sewage into the basement.

Does a sewage backup mean the drain field has failed?

Not necessarily. A backup may be caused by a full tank, clogged line, blocked filter, failed pump or drain-field issue. A professional inspection is needed to identify the cause.

Get Help With a Septic Backup in Howell or Livingston County

A sewage backup is not something to wait on. Stop using water, keep everyone away from the contaminated area and have the septic system evaluated as soon as possible.

Anything Outdoors Septic & Excavating provides emergency septic service, pumping, tank cleaning, diagnostics and repairs throughout Howell, Livingston County and surrounding areas.

Call (517) 295-7757 for help with a sewage backup or urgent septic problem.