Over 30 Years of Serving Iowa's Septic System & Excavation Needs

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Septic System Installation

Service Area

Hood Excavation's Iowa Counties Service Area - Map
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Call Phil Hood:

Cell: 515-571-0023

Message: 515-546-6195

Do you need a Septic System installed?

Hood Excavation has been installing septic systems for over 3 decades, and we've seen and done just about everything there is to see and do on the subject. From severely sloping property to sizing large & small systems, you can leverage our experience to make sure your installation is done right.

When it comes to a septic system, most of us just want it to work so we can go back to forgetting about it. In reality, a well designed and installed system should be worry free for a long time as long as it is maintained properly.

To get a quote on a new septic system installation sized for your home or building, call Phil Hood for a free consultation.

What is a Septic System?

A septic system is a waste water treatment plant, but on a much smaller scale than a city's. Septic systems are for a house, commercial building, or multifamily dwelling that isn't connected to a municipal treatment facility.

A septic system is installed with the goal of treating waste water to remove materials and bacteria before the liquid moves into the ground, & eventually the ground water supply.

Septic System Diagram

Septic System Graphic with septic tank & leach bed, white background & shadows

The septic system generally consists of 3 main parts: the Septic Tank, Distribution Box, and the Leach Field.

Septic Tank

The septic tank usually has 2 chambers, and its sole purpose is to separate and break-down waste. It allows solids that won't dissolve to fall to the bottom (the "sludge" layer), and floating wastes & bacteria move to the top (the "scum" layer), so the middle layer (mostly liquid) can flow through a hole with a filter and on to the next component.

During its journey through the septic tank, about 95% of human waste and toilet paper will be broken down and turned to liquid to be sent to the distribution box. The other 5% is a tarry sludge that settles to the bottom of the tank.

The sludge layer will build up over time and should be pumped out every 3 - 4 years. Otherwise there will be less room for wastewater to separate and break down, which means it will move through the tank too quickly, and start clogging the leach field with sludge. This eventually ruins the system if left unchecked, and is an expensive repair.

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Distribution Box

The second component is the distribution box. It sits between the septic tank and leach field to help ensure that separated wastewater is evenly sent to each leach field chamber, so as not to overload any one.

Leach Field

The leach field is a series of chambers with open bottoms that provide enough surface area for the separated waste water to come into contact with the ground and "leach" through it, allowing soil and microbes to remove and break-down those ingredients which we don't want to enter our water table.

What is Waste Water?

Waste water that enters a septic system includes waste from toilets, drain water from sinks, baths, dishwashers, clothes washing machines, and garbage disposals.

Today's sanitation standards consider any water that touches the skin as wastewater, and must be treated.

septic system wastewater diagram, with appliances and drain pipes, house cross-section view

Other Septic System Design Types

For Special Soil Conditions or Space Requirements

AdvanTex® Septic Tank & Space-Saving Wastewater Treatment System, Section View - Image Courtesy of Orenco Systems®, Incorporated
Septic tank & AdvanTex® space-saving wastewater treatment system

AdvanTex® Systems: When Space is Limited

We sell and install the AdvanTex® Wastewater Treatment Systems for customers who do not have enough room on their property to install a traditional leach bed. These models are efficient, technologically advanced, ecologically sound, compact, and "smart" (meaning they offer the ability to email the owner with status updates and alarms).

Mound Septic System Diamgram - For when the water table is too high

Mound Systems: When the Water Table is Too High

In some parts of our service area the water table is too high to bury a series of traditional leach field chambers. They would become water-logged and not work correctly.

In this situation a Mound System will be built, which adds a mound of soil, sand, & crushed rock on top of the ground. Wastewater from the septic tank is pumped up to the top of the mound and it filters down through the materials. The point is to add an environmentally safe amount of filtering distance between where the effluent (wastewater) starts percolating through the soil and the groundwater supply.

Septic Tank & Leach Bed Links

Septic System & Leach Bed Installation Photos

Excavation & Digging - the Art & Science of a Dig
The Art of a Well Dug Hole.

Septic System Work: Placing the Leach Field, or Leach Bed Chambers
Septic System Work: Placing the Leach Field Chambers.

Backfilling a Septic Tank & Leach Bed excavation with Pump Indicator Light
Backfilling a Septic Tank & Leach Bed with Pump Indicator Light

Hood Excavation's Services Links

More detail provided on the Services page.

Questions? call Phil Hood.