Embracing Maryland’s Wet Season: What It Means for Perc Testing

If you live in or are exploring real estate in Anne Arundel County - there’s one seasonal factor that can quietly shape what’s possible on a property: wet season perc testing.

It may not be glamorous, but it’s essential.

What Is Perc Testing?
Perc (percolation) testing measures how well soil absorbs water. For properties on septic, it determines whether you can build, expand, and what type of system is needed. Simply put it answers: Can this property support what I want to do?

Why Wet Season Matters
Maryland’s wet season (typically February 1 – April 30) is when soils are most saturated and groundwater is highest. Testing during this time gives a more realistic picture of how a septic system will perform year-round.

2026 Key Dates (Anne Arundel County)

• Starts: March 9, 2026

• Typically ends: April 30

• First-come, first-served

Miss this window, and you may be waiting another year.

When Do You Need It?
You’ll likely need a perc test if you are:

• Buying land

• Building a home

• Expanding a property on septic

• Evaluating long-term potential

Pro Tips

• Apply early - spots fill quickly

• Be flexible with timing and conditions

• Larger lots may require multiple tests

• Work with local experts to avoid surprises

In our area, septic systems are common and while they’re not always top of mind, they play a major role in a property’s value and potential.

Real estate isn’t just about what you see - it’s also about what’s happening underground. And during Maryland’s wet season, that matters more than ever.

If you’re considering buying land, building, or just want to better understand your options, I’m always happy to help you think it through.