If you own a home in Washington, there’s a good chance your property relies on a septic system. In fact, the Washington State Department of Health estimates that nearly 1 in 3 households across the state use one to handle wastewater. But not all systems are alike—choosing the right type can affect your property’s performance, cost of upkeep, and long-term reliability.
From traditional gravity-fed tanks to advanced aerobic septic systems, the right solution depends on your land, household size, and local conditions. In this guide, we’ll break down the most common types of septic systems so you can better understand your options. And if you’re planning a new septic installation near me in the Puget Sound area, FloHawks is here to help.
Common Types of Septic Systems
1. Gravity Septic Systems
The most traditional option. Wastewater flows by gravity from your home into the septic tank, then disperses into the drainfield. Reliable and affordable, these systems work best with good soil drainage.
2. Pressure Distribution Systems
When soil needs more even wastewater distribution, a pump is added to pressurize and disperse effluent evenly. Great for smaller lots or shallow soil.
3. Aerobic Septic Systems
A “high-performance” option. By using oxygen to break down waste more efficiently, an aerobic septic system produces cleaner effluent before it enters the drainfield. This makes them ideal for properties with poor soil, limited space, or where extending the drainfield’s life is critical.
4. Mound Systems
When natural soil isn’t deep enough, a mound of sand and gravel is built to treat wastewater. While more complex and space-intensive, mound systems make septic possible where traditional systems won’t work.
5. Sand Filler Systems
Wastewater passes through a specially designed sand bed before reaching the drainfield. These compact systems are effective for properties with poor soil or limited space.
Choosing the Right System for Your Property
The best system depends on:
- Soil type and drainage
- Property size and slope
- Household water usage
- Local health department regulations
That’s why it’s important to work with trusted professionals who know the local landscape. If you’re searching for septic installation near me in Pierce, King, Thurston, Kitsap, or Snohomish counties, FloHawks has you covered.
Why FloHawks?
With decades of experience serving homeowners across Washington, FloHawks is committed to keeping your home safe, sanitary, and stress-free. Whether you need guidance choosing between the types of septic systems or maintenance for your current tank, our team is here to help.
Ready to Find the Right Septic System?
Contact FloHawks today to schedule a consultation. Our experts will assess your property, explain your options, and handle every step of your septic installation and care.
📍 Serving Pierce, King, Thurston, Kitsap, and Snohomish counties.
📞 Call us today at (253) 499-8855 or request service online to get started.

