What Central Indiana Homeowners Should Know About E1 Sewer Systems

For many properties in Central Indiana, a traditional gravity sewer system or conventional septic system is not feasible due to challenging terrain or soil conditions. In these situations, an E/One (E1) pressure sewer system offers a reliable alternative. Understanding how these systems work and how to maintain them is essential for homeowners.

Understanding Pressure Sewer Systems

A gravity sewer system relies on large pipes installed in deep trenches that must follow a constant downslope. In contrast, a pressure sewer system uses small-diameter pipes that can follow the contour of the land, moving up and down hills or across flat land at a constant depth [1]. This makes pressure systems ideal for flat, rocky, hilly, or wet land where gravity systems are impractical or too expensive.

The E/One system, manufactured by Environment One Corporation, is a leading pressure sewer technology. An E/One grinder pump appliance is installed at each property, accepting gravity-fed wastewater from the building. The wastewater is ground into a slurry and pressurized, allowing it to be transported horizontally over two miles or uphill 185 feet vertically through the sealed pipe network [1].

Pressure Distribution in Indiana

In Indiana, pressure distribution systems are primarily used when the soil disposal area is located upslope or too far away from the septic tank for gravity flow. They are also recommended for sandy soils to ensure adequate wastewater treatment [2].

Indiana Rule 410 IAC 6-8.3 specifies that certain on-site sewage systems must utilize pressure distribution to meet state health standards [3]. Because many Indiana soils are not well suited for conventional residential wastewater disposal, these innovative designs are often required for satisfactory performance [2].

Maintenance and Alarm Response

Proper maintenance is crucial for the longevity of an E1 system. Homeowners should be aware of what to do if the system alarm sounds. The immediate steps are to silence the alarm at the panel box, stop using water immediately to prevent overflow, and wait 15 minutes for the system to reset [4]. If the alarm light remains on after 15 minutes, a certified service professional should be contacted.

Maintenance Scenario	Recommended Action
Alarm Sounds	Silence alarm, stop water use, wait 15 minutes. Call for service if light remains on.
Extended Vacancy	Flush system with 70 to 90 gallons of hot soapy water before leaving and upon return.
Power Outage	Reduce water usage. Contact a pumping service if backups occur.
Extreme Weather	Use flood covers in flood-prone areas. Ensure adequate insulation in freeze-prone areas.

Prior to long periods of vacancy, it is recommended to fill a bathtub with hot water and dish soap, then let it drain into the grinder pump station. This activates the pump and clears wastewater from the system, reducing odors and preventing issues [4].

For expert E1 system service and maintenance across Central Indiana, contact Max Haas Septic Services at 317-671-7680 or visit our website.

Sources: Environment One Corporation (eone.com); Purdue University Extension — Steps in Constructing a Pressure Distribution Septic System; Indiana Department of Health Rule 410 IAC 6-8.3.