About us
Customer Care
Quick Pay
During this unprecedented time, we recognize the impact the novel coronavirus (COVID-19) is having on much of our daily lives. The health and safety of our employees, customers, and communities is always our top priority.

Tennessee Wastewater wants to assure our customers and the communities we serve that we will continue our operations throughout the duration of this public health crisis. Our operations personnel will continue their work to keep the wastewater systems operating reliably and will be responsive to any service needs that may arise.

Any needs for service should be directed to us at 877-669-0786.

As this public health crisis continues to evolve, we will strive to keep our customers informed and work to be responsive to our customer’s and community’s needs.
A piece on Adenus (our parent company) was recently aired on select TV stations across the southeast. If you missed it, you can watch it by clicking the link below.
Watch the spot

On-Site Systems was formed in 1993 to accomodate the utility needs of the emerging decentralized wastewater industry in Tennessee. In the early years, regulators and developers were slow to accept the decentralized model that On-Site Systems was looking to provide. Since the late 90s, regulatory support for decentralized wastewater in Tennessee has gradually improved as the technology has proven itself to be a viable long term option for sewering new development. On-Site Systems established the first standards in Tennessee for professionally operating and maintaining wastewater systems through refining the technology and developing a Quality Control/Quality Assurance (QA/QC) Program.


In 2003, On-Site Systems became Tennessee Wastewater Systems to better reflect the service territory the utility was serving. Tennessee Wastewater has grown considerably since that time, reflecting the acceptance of decentralized wastewater as a viable solution in the marketplace. Tennessee Wastewater is the largest decentralized wastewater utility in the state in terms of customer base, permitted systems, systems in operation, and service territory footprint. It is the flagship utility for our industry and has created the blueprint for sustainability that many other utility districts, municipalities and service providers have since adopted. As Tennessee Wastewater approaches its 25th anniversary, we are reminded of the strides our industry has made and anticipate a very bright future in the years ahead.

(pictured above): the current Adenus office on Aviation Pkwy

Copyright © 2020 Adenus Group. All rights reserved.
Design by Stylish Website Templates
851 Aviation Parkway
Smyrna, TN 37167

Utility Customer Care: 888.3.ADENUS
Maintenance Hotline: 877.669.0786