What is a POWTS? Understanding Your Private On-Site Wastewater Treatment System

If you live outside the city limits of Fond du Lac or in the more rural stretches of Dodge and Winnebago Counties, you likely don’t have a connection to a municipal sewer line. Instead, your home relies on a POWTS: a Private On-Site Wastewater Treatment System.

While many people simply call it a septic system, the term POWTS is the official designation used by the State of Wisconsin to describe the highly engineered infrastructure buried in your backyard. At Laudolff Septic Services, we believe that understanding how your POWTS works is the first step in maintaining a healthy, long-lasting home.

How a POWTS Works

A POWTS is essentially a personal, small-scale sewage treatment plant. Its job is to collect, treat, and disperse all the water that leaves your home—from your toilets and showers to your kitchen sink and laundry. A typical system consists of two primary components:

1. The Septic Tank: This is the first stop for wastewater. In the tank, heavy solids settle to the bottom (sludge), while lighter fats and oils float to the top (scum). Naturally occurring bacteria begin to break down the organic matter in the middle layer of liquid, known as effluent.
2. The Soil Absorption Component: Once the liquid leaves the tank, it moves to the drainfield, mound, or at-grade system. Here, the soil acts as a natural biological filter, removing harmful bacteria and viruses before the treated water eventually re-enters the groundwater.

Common Types of POWTS in Our Area

Because the geography around Fond du Lac varies, from the rocky ledge to the clay-heavy lowlands, not every property can use the same type of system. The results of your soil evaluation will dictate which POWTS is right for you:

• Conventional Systems: Used in areas with deep, well-draining soil.
• Mound Systems: Common in our area, these use a raised bed of sand to provide extra filtration where groundwater or bedrock is high.
• At-Grade Systems: A middle ground option that places the system directly on the tilled natural soil surface.
• Holding Tanks: These collect waste but do not treat it; they must be pumped out regularly by a professional.

Why the “P” in POWTS Matters

The “Private” in POWTS means that the responsibility for the system’s health rests entirely on the homeowner. Unlike city dwellers who pay a monthly sewer fee, you are the manager of your own utility.

Under Wisconsin SPS 383 code, you are legally required to keep your POWTS in good working order. This includes the mandatory 3-year inspection and pumping cycle enforced by our local counties. Regular maintenance doesn’t just keep you compliant with state law; it protects your property value and ensures that the water returning to our local environment is clean and safe.

Trust the Local POWTS Service in Fond du Lac

Managing a POWTS can feel overwhelming, but you don’t have to do it alone. From initial soil testing and custom design to installation and long-term maintenance, Laudolff Septic Services is your partner in keeping your private system running perfectly.

If you have questions about your specific POWTS or need to schedule a mandatory inspection near you, contact us. We’re proud to keep the Fond du Lac area’s water clean, one system at a time.