When your sump pump quits mid-storm, minutes matter. Here’s what to do right now, why backups are essential in Michigan, and how to make sure it never happens again.
In Washtenaw County, the sump pump is the unsung hero of a dry basement. Spring snowmelt and summer downpours push enormous amounts of water at local foundations, and when the pump can’t keep up — or stops entirely — water can rise across a finished basement in a matter of minutes.
If your pump has failed and water is coming in, here’s what to do right now. And if the basement is already flooding, pair this with our step-by-step guide on what to do when your basement floods.
| Pump’s out and water is rising? For 24/7 emergency water removal from a licensed, insured local pro, call: Call (734) 264-7846 (available 24/7) |
Why sump pumps fail during storms
It’s no coincidence that pumps fail at the worst possible moment. The same storm that dumps the rain is often what disables the pump. The most common causes:
- Power loss — by far the number one cause. A pump with no electricity and no backup is just a hole in the floor.
- A stuck or jammed float switch — debris or a pump that has shifted in the pit can keep the float from triggering
- Overwhelmed capacity — an undersized or aging pump simply can’t move water as fast as it’s coming in
- A clogged, frozen, or disconnected discharge line — water that can’t get out comes right back
- Age and burnout — pumps run on a motor that wears out, typically after about 10 years of service
What to do right now
First, stay safe. Don’t step into standing water that may be touching outlets or the pump’s electrical connection. If you can safely reach the pit and the problem is a visibly stuck float, freeing it may restart the pump. If you have a wet/dry vacuum or a backup pump, start removing water and lift belongings up off the floor onto shelves or tables.
If water is rising faster than you can manage, or it’s reaching electrical systems, stop and call for professional emergency extraction — a restoration crew can move far more water, far faster, than household equipment.
Document the damage for your claim
Before serious cleanup, photograph the water level and every damaged item. One important note: sump-pump failure and the resulting backup are often excluded from a standard homeowners policy unless you’ve added a specific rider or endorsement.
The fix that prevents the next flood: a backup pump
Because most failures trace back to a power outage, a backup system is the single most valuable upgrade you can make. There are three common options, and the right one depends partly on whether you’re on city water or a well:
- Battery backup — takes over automatically when the power goes out. Installed cost typically runs about $600 to $2,000, averaging around $900. This is the most reliable choice for rural homes around Chelsea and Dexter that are on well water.
- Water-powered backup — uses municipal water pressure to pump, with no battery to maintain, often $300 to $1,000 installed. It will not work on a private well, which rules it out for many homes in our area.
- Combination systems — a primary pump and battery backup in one integrated unit, usually $800 to $3,000 installed.
Test it monthly, service it seasonally
A backup is only as good as its maintenance. Pour a bucket of water into the sump pit each month and confirm the pump switches on and clears the water. Have the system inspected in early spring before the heavy rains and again in late fall before the ground freezes. Annual maintenance prevents the large majority of sudden failures, and replacing a battery on schedule (typically every few years) keeps the backup ready.
Don’t forget the discharge line and exterior drainage
A pump can run perfectly and still flood your basement if the water has nowhere to go. Make sure the discharge line carries water well away from the foundation and isn’t crushed, clogged, or — in winter — frozen at the outlet. Pair the pump with good exterior drainage: clean gutters, downspout extensions, and soil graded away from the house all reduce how hard the pump has to work.
| Need it dried out before mold sets in? Local crews have the pumps and meters to do it right. Call (734) 264-7846 (available 24/7) |
Warning signs your pump is about to fail
A sump pump rarely dies without warning. Replacing it on your schedule — not at 2 a.m. during a thunderstorm — is far less stressful and far less expensive. Watch for:
- Grinding, rattling, or unusually loud operation, or heavy vibration
- Running constantly, or rapidly cycling on and off
- Visible rust, or water in the pit that smells musty
- It’s more than about 7 to 10 years old
- It didn’t switch on the last time you tested it
Pedestal vs. submersible — and getting the size right
There are two main pump types. A pedestal pump keeps its motor up on a shaft above the pit: it’s cheaper and easy to service, but louder. A submersible pump sits down in the pit: quieter, handles more water, and a better fit for a finished basement.
Just as important as the type is the capacity. A pump has to move water faster than it flows in during a heavy storm, and an undersized pump is a surprisingly common reason a basement floods even when the pump technically ‘works.’ A pro can size the pump to your basement, your water table, and the kind of storms our area sees.
After every big storm, reset and inspect
Make it a habit to check the system after each major storm. Confirm the primary pump is running normally and the pit isn’t holding water, verify the backup is still charged and armed, and step outside to make sure the discharge line is clear and draining well away from the house. A two-minute check once the storm passes is the cheapest insurance there is against the next one.
When to call for emergency water removal
If the basement has already flooded, a restoration crew can extract the water and dry the space properly before mold takes hold within 24 to 48 hours. The Sun Times News keeps a 24/7 line to vetted local water-damage pros serving Chelsea, Dexter, Saline and Milan.
How long do sump pumps last?
Plan on roughly 10 years for a primary pump. If yours is approaching that age, replace it proactively before it fails during a storm — and add a backup at the same time. It’s far cheaper than a flooded basement.
Frequently asked questions
Why did my sump pump stop during a storm?
Most often because the storm caused a power outage and the pump had no backup. Other common causes are a jammed float switch, a pump overwhelmed by the volume of water, a clogged or frozen discharge line, or simple old age.
Do I really need a battery backup sump pump?
In Michigan, it’s strongly recommended. Because so many failures happen during the power outages that accompany the heaviest storms, a battery backup keeps protecting your basement at exactly the moment your main pump can’t.
Battery or water-powered backup — which is better?
Battery backups work anywhere and are the right choice for homes on well water (common around Chelsea and Dexter). Water-powered backups need municipal water pressure and won’t work on a well, but they have no battery to maintain. A pro can recommend the best fit.
How much does a backup sump pump cost?
Roughly $600 to $2,000 installed for a battery system (around $900 on average), $300 to $1,000 for a water-powered unit on city water, or $800 to $3,000 for a combination system.
How often should I test my sump pump?
Monthly — pour a bucket of water into the pit and confirm it switches on and pumps out — plus a professional check each spring and fall.
Who do I call when my basement floods near Chelsea, Dexter or Saline?
For 24/7 emergency water removal from a licensed local pro, call (734) 264-7846.
| Every hour counts with water damage. Get a licensed, insured local crew on the way: Call (734) 264-7846 (available 24/7) |
Last updated June 2026. This guide is general information for Washtenaw County homeowners and isn’t a substitute for professional, safety, or insurance advice. In an emergency, call 911.
114 North Main St Suite 10 Chelsea, MI 48118
