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A ServiceMaster By Simons technician removes wet carpet in a basement after a washing machine overflow

Washing Machine Overflows – Causes and Clean-Up

Nasutsa Mabwa

June 23, 2025

A washing machine overflow can lead to serious water damage if not addressed quickly. Learn the common causes, prevention tips, and how ServiceMaster Restoration By Simons helps Chicago homeowners clean up safely and effectively.

What Causes Washing Machine Overflows?

A washing machine overflow can quickly turn from a minor inconvenience to a major water damage emergency. Understanding the most common causes can help you prevent a costly disaster in your Chicago-area home.

Malfunctioning Water Inlet Valve

The water inlet valve controls the flow of hot and cold water into your washing machine. If it fails to shut off after the wash tub fills, water will continue to pour in and overflow. To test this, turn off the machine’s power during filling. If water keeps flowing, the valve is likely the problem and needs replacement.

Broken Pressure Switch

This switch signals the machine to stop water flow once the desired level is reached. A faulty pressure switch means nothing stops water from filling the machine, leading to overflow.

Low Water Pressure

Water pressure below 20 PSI can prevent the inlet valve from receiving the signal to stop water flow. This can cause the washer to overfill.

How to Prevent Washing Machine Overflows

  • Avoid overloading the machine; distribute laundry evenly and loosely.
  • Replace old rubber supply hoses with durable stainless steel braided hoses.
  • Install a water alarm or detector near your washer to alert you to leaks.
  • Consider installing an automatic shutoff valve to stop flooding from failed hoses or valves.
  • Use the correct detergent for your machine, and never use more than recommended to avoid excess suds.

For more on protecting your home from water damage, visit https://servicemaster-restorationbysimons.com/restoration-services/residential/water.

What to Do If Your Washing Machine Overflows

If you face a washing machine overflow:

1. Turn off electrical power at the circuit breaker.
Do not press "Cancel" on the washer, as this could activate the drain cycle and worsen flooding.

2. Mop up water and remove wet rugs or furnishings.
Dry these items immediately to prevent further damage. Water from a washing machine is generally clean, so many items can be salvaged.

3. Remove wet clothes from the machine.
Wring them out over a sink or outside to minimize additional water inside the appliance.

4. Inspect water supply hoses.
Move the washer and check for leaks or drips. Replace damaged hoses promptly.

If water has spread beyond the laundry area or seeped into hidden spaces, it’s best to call professionals. Water can cause damage behind walls or under floors and promote mold growth if not properly dried. ServiceMaster Restoration By Simons provides water damage restoration throughout Chicago and the suburbs.

Why Choose ServiceMaster Restoration By Simons?

ServiceMaster Restoration By Simons has more than 40 years of experience helping homeowners and businesses recover from water damage in Chicago, the North Shore, and DuPage County. As part of the nation’s oldest restoration brand, founded in Chicago in 1929, we bring trusted expertise to every project. Our team is IICRC-certified and a member of the Restoration Industry Association (RIA).

For immediate help, call 773-376-1110 or visit https://servicemaster-restorationbysimons.com.

FAQs — Washing Machine Overflow Cleanup

  • What should I do first if my washer overflows?
    Turn off power at the circuit breaker to prevent electrical hazards. Do not try to stop the machine using the control panel.
  • Can I clean up the water myself?
    If water is limited to the laundry area and caught early, you may be able to mop it up. For larger spills or water that has spread, call professionals to prevent hidden damage and mold.
  • What are signs of hidden water damage after an overflow?
    Musty odors, warped flooring, or stains on walls could indicate moisture trapped in unseen areas.
  • Does insurance cover washing machine overflow damage?
    Most homeowner policies cover sudden and accidental water damage, such as that caused by appliance failure. We document damage to assist with your claim.

About ServiceMaster Restoration By Simons

ServiceMaster Restoration By Simons is a trusted leader in disaster restoration services across Chicago, the North Shore, and DuPage County. As part of the nation’s oldest restoration brand, founded in Chicago in 1929, our company brings 40+ years of local expertise to every project. We specialize in water damage restoration, fire damage cleanup, mold remediation, smoke odor removal, and specialty cleaning. Our team is IICRC-certified and a member of the Restoration Industry Association (RIA), reflecting our commitment to quality, integrity, and professional excellence.

For help with water damage or other restoration needs, call 773-376-1110 or visit https://servicemaster-restorationbysimons.com.

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Nasutsa Mabwa is the CEO and co-owner of ServiceMaster Restoration By Simons, a certified MBE/WBE firm proudly serving Cook, DuPage, and Lake Counties in Illinois. Under her leadership, the company has become one of Chicagoland’s most trusted providers of disaster restoration services, including water and flood damage restoration, fire and smoke damage cleanup, and mold remediation for residential and commercial clients.

A recognized civic and business leader, Nasutsa is a recipient of the 2020 Daily Herald Business Ledger C-Suite Award, a Crain’s Chicago Business 40 Under 40 honoree, and a 2018 ServiceMaster® Achiever Award recipient. She currently serves as a Civic Federation Board Member, an Advisory Board Member, and is the Past President of the Executive Committee for the Evanston Chamber of Commerce. She is a proud member of the WPO - Women's President Organization.

Nasutsa holds IICRC certifications in Water Damage Restoration (WRT) and Fire & Smoke Restoration (FSRT), bringing both strategic leadership and technical expertise to every project.

She is also the co-author of RESTORE: A Complete Guide to Protecting Your Home As Your Most Valuable Asset from Water and Fire Disasters — a practical, accessible book for homeowners based on real-world experience in the restoration industry.

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