Heavier downpours, flash floods, and rising groundwater are no longer distant possibilities—they’re realities many American homeowners are already facing. When your sewer system can’t keep up, the result can be flooded basements, water damage, and costly repairs. But how do you know if your home’s sewer is ready for the future climate? Here’s a guide to assessing your risk—and what you can do to protect your property.

Why Climate Change Challenges Your Sewer System

Much of the U.S. sewer infrastructure was built decades ago, designed for weather patterns that no longer exist. In many cities, pipes date back to the mid-20th century, when rainfall was less intense and less frequent. Today, storms are stronger and more unpredictable, putting enormous pressure on systems that were never meant to handle such volumes of water.

When the sewer system reaches capacity, water looks for other ways out—up through floor drains, into basements, or through cracks in foundations. The problem is especially severe in older neighborhoods with combined sewer systems, where stormwater and wastewater share the same pipes. During heavy rain, these systems can back up or overflow, sending contaminated water into homes or nearby waterways.

Signs Your Sewer May Be at Risk

You don’t need to be a plumber to spot early warning signs. Watch for these indicators that your system might be vulnerable:

• Slow drains in sinks, showers, or toilets can signal partial blockages or sagging pipes.
• Water in the basement after heavy rain is a clear red flag—especially if it comes up through floor drains or cracks.
• Damp walls or musty odors may point to leaks or groundwater intrusion.
• Standing water in yard drains or cleanouts after storms can mean your system is struggling to keep up.

If you notice one or more of these signs, it’s time to schedule a professional inspection.

How to Get Your Sewer Checked

A licensed plumber or sewer contractor can perform a camera inspection to assess the condition of your pipes and connections. This inspection can reveal:

• Cracks, root intrusion, or misaligned joints
• Sagging sections where water pools instead of flowing
• Leaks that allow groundwater to enter or wastewater to escape
• Missing or malfunctioning backwater valves

An inspection typically costs a few hundred dollars, but it can save you thousands by catching problems before they cause major damage.

Prevention: What You Can Do

You can’t control the weather, but you can take steps to reduce your risk of flooding and sewer backups.

• Install a backwater valve. This device prevents sewage from flowing back into your home during heavy rain.
• Keep gutters and downspouts clear. Direct roof runoff at least six feet away from your foundation.
• Grade your yard away from the house. Proper slope helps rainwater drain naturally instead of pooling near the foundation.
• Consider green infrastructure. Rain gardens, permeable pavers, and rain barrels can help absorb and manage stormwater on your property.
• Review your insurance coverage. Standard homeowners policies often exclude sewer backup damage unless you add a specific rider.

If You Live in a Flood-Prone Area

Many local governments and the Federal Emergency Management Agency (FEMA) provide flood risk maps that show which areas are most vulnerable. You can check your address on floodsmart.gov to see your flood zone and learn about mitigation options.

If you’re in a high-risk area, consider consulting your city’s public works department or a licensed contractor about protective measures. Some municipalities even offer rebates or grants for installing backwater valves or green stormwater systems.

An Investment in Peace of Mind

Preparing your sewer for the future climate isn’t just about pipes and pumps—it’s about protecting your home and your sense of security. A flooded basement can destroy valuables and cause long-term structural damage, but with timely action, you can prevent the worst outcomes.

A professional inspection, a backwater valve, and a plan for managing stormwater are small investments that can make a big difference when the next major storm hits.

The climate is changing, but with the right knowledge and preparation, you can make sure your home’s sewer system is ready to handle whatever the future brings.