About

Projects

Learn about Projects for Citizens Energy Group, including DigIndy, Septic Tank Elimination Program, and Combined Sewer Overflow (CSO) Projects.

DigIndy

What is DigIndy?

The DigIndy Tunnel System is a 28-mile long network of 18-foot diameter deep rock tunnels being built 250-feet beneath the city. Along with other projects in the combined sewer system and at Citizens two advanced wastewater treatment plants, the $2 billion program is Indy’s solution to reducing combined sewer overflows into area waterways by up to 97 percent, and keeping the utility in compliance with a Consent Decree with the U.S. Environmental Protection Agency.

The Problem

Combined sewers convey both storm water and wastewater (sewage) in one piping system. Historically, more than 800 communities across the United States built combined sewers once indoor plumbing became commonplace in the late 1800s.

During normal rain events with ¼-inch of rainfall or more, the combined system capacity can become overwhelmed, resulting in a mixture of storm water and wastewater overflowing into area waterways. This is referred to as a combined sewer overflow (CSO) event, which causes a threat to public health and the environment.

The Benefits

Our water and wastewater investments will have enormous benefits on the quality of life and the local economy. Cleaner rivers and streams will lead to enhanced recreational opportunities and community revitalization across Central Indiana. At the same time, Citizens system investments will create thousands of good paying jobs.

Septic Tank Elimination Program

*The information contained on this page only applies to projects going into construction in 2016 or after. All other STEP Project information can be found here.

If you are interested in knowing if your home or neighborhood is in a future STEP area please submit a Utility Availability Request.

In 2016, Citizens adopted a new approach to providing sewer service to properties currently being served by septic systems. As part of this new program, property owners will be able to pay one fee for connection and construction; to one entity (i.e. Citizens Energy Group) if they agree to participate in our program within the allotted time. (*Offer is only good for a limited time. See STEP Program Guide for more details.)

By participating in the Citizens STEP Program, property owners will no longer be required to hire their own contractor. However, if a property owner elects not to participate in Citizens STEP Program, they will still be required to connect and will need to hire a contractor.

Combined Sewer Overflow (CSO) Projects

Combined sewers convey both storm (rain) water and wastewater (sewage) in one piping system. Historically, more than 800 communities across the United States built combined sewers once indoor plumbing became commonplace in the late 1800s.

During normal rain events with ¼-inch of rainfall or more, the combined system capacity can become overwhelmed, resulting in a mixture of storm water and wastewater overflowing into area waterways. This is referred to as a combined sewer overflow (CSO) event, which causes a threat to public health and the environment.

Our Consolidated Collection Sewer (CCS) projects are working to mitigate CSOs in the parts of Indianapolis where overflows occur and cause the greatest negative impact to our rivers, streams and treatment system as a whole.

Consolidated Collection Sewer Projects (CCS)

E. 10th Street/N. Kealing Avenue

Windsor Park

Market Street/Pine Street

Sewer Rehabilitation

A large and long-overdue sanitary sewer rehabilitation program is underway at Citizens. Tens of millions of dollars are being spent to rehabilitate pipes that have, in some cases, been untouched since they were installed in the 1800s. Citizens is addressing the backlog of needed repairs by employing cured-in-place piping (CIPP) contractors to rehabilitate the lines and extend their service life by another 50-plus years.

CIPP lining starts by precisely measuring the existing or "host" pipe to determine the diameter, length and service connection locations. A felt tube is then manufactured to those exact specifications, saturated with resin, and shipped to the job site. Steam or water pressure is used to "invert" the tube down the host pipe where it will be "cured" using steam or hot water. The curing process lasts a few hours, and when completed, provides a new seamless and structurally sound pipe. Robotic tools are used to reinstate all service connections; and, in most cases, the projects are completed without any disruptions to the customer's service.

Since taking ownership of the wastwater utility, Citizens has installed over 100,000 linear feet of CIPP from pipes ranging in size from 8 inches to 72 inches. This rehabilitation program provides several important benefits for Citizens customers including: revitalized assets providing economic development opportunities, increased reliability of service through reduced asset failures, and increased safety for the traveling public by reducing the possibility of catastrophic failures causing sinkholes or voids under the pavement.

Lift Stations

When sewage leaves homes and businesses, it is typically transported by gravity through sanitary sewers to one of Citizens Energy Group's two wastewater treatment plants.

However, there are instances when due to topography, bodies of water or streams; a lift station and force main sewer, which move sewage from a lower to higher elevation, are necessary.

10 Thousand Trees

To help keep Indy's Waterways Clean!

 

Citizens Energy Group, Keep Indianapolis Beautiful, and the Indianapolis Department of Public Works (DPW) have joined forces to begin a long-term partnership to plant 10,000 trees across the city as a way to beautify neighborhoods and reduce combined sewer overflows to area waterways. 

Why 10 Thousand Trees?

  • 10 Thousand Trees is an initiative to plant ten thousand trees in support of Citizens Energy Group’s investments that will nearly eliminate combined sewer overflows (CSOs) to area rivers and streams by the year 2025.
  • To prevent sewer overflows from reaching area waterways, Citizens will invest about $2 billion by the year 2025 to build the DigIndy Tunnel System and expand its wastewater treatment plants. These investments are part of an agreement with U.S. EPA.
  • Citizens continues to evaluate sustainable solutions that further reduce CSOs and provide additional environmental benefits.  An additional 10,000 mature trees planted within the CSO area may provide up to a million gallons of stormwater storage during rain events and thus further reduce CSOs.
  • With research clearly demonstrating the impact of urban trees on stormwater and CSO reduction, health, safety, neighborhood value and overall quality of life, the 10 Thousand Trees Program is providing far-reaching benefits to the community.