Wastewater System & Water System Design
Aaron S. Fuller, LLC
Licensed Class B Designer
Septic System Basics
A septic system is very complex. This content has been prepared to educate people about septic systems. Often people live by the very common motto “Out of site out of mind.” The same people are often the first to call and ask for a replacement system design. The contents of this page should also help any septic system user avoid early failure.
Types of Systems
There are four types of septic systems
3. Mound system
Soil and Site Suitability
The Vermont Agency of Natural Resources (VANR) has set forth technical standards that every septic system must meet. Two main things considered are soil and site suitability. The soil must be well drained in order to use a conventional system or an at-grade system. Soils that are tend to have a higher water table, and water does not move through with ease, are prime soils for a mound system or pretreatment system. Once it has been established that the soils meet the VANR standards the next item of investigation is site suitability. There are several factors that can render a site useless for a septic system. The VANR requires that certain isolation distances shall be maintained in order to protect the health, and the environment. Water sources and any related piping is one of the most important things to protect with an isolation distance. A second thing that benefits from an isolation distance is a body of water. While isolation distances are very important when it comes to determining site suitability it is not the only thing. Another site component that is crucial in determining weather a septic system can be designed is the ground slope. These are the two main factors that determine what can be used for a septic system on a site.
Septic System Permits
are two main types of permits that an individual will need in order to
construct a septic system. Unless the site is exempt from permitting
requirements. The first type of permit is called a Potable Water Supply and
Wastewater Disposal Permit. There are several actions that will cause a site to
obtain this permit. This permit is issued by the State of
Signs of a Failing Septic System
A property owner should always keep an eye on their existing septic system. A failed septic system can cause unsanitary conditions that can lead to sickness or death in the community. Here are some signs that will help a property owner determine if a septic system may have failed.
1. Sewage surfacing on the ground on near a septic system or at the septic tank.
2. Spongy ground on or near the septic system.
3. Sewage backing up into your house.
The first sign usually indicates that the field has failed. The second sign indicates that there may have been some unusual conditions that can result in failure if they are not attended to rapidly. The third indicates that you should have your tanks pumped, or that your field is failed.
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