About us
Customer Care
Pay My Bill
Tennessee Wastewater recently partnered with Fiserv to enable paperless delivery of checks by most major banks' billpay services. This drastically reduces check processing time and helps our customers better anticipate when their checks will clear.
Fiserv Checkfree
TWSI has updated statewide and Williamson County bonding rates effective September 1st (October 1st billing cycle) to reflect the latest TRA mandated true-up. These rates are expected to remain in effect until the next true-up period, which is currently projected to be the same time in 2018.
All Adenus Utility Customers are now able to manage their accounts online! This includes checking your balance, viewing payment history, and making online payments. It's all part of our newly enhanced customer care section of the site. Give it a try by clicking the link below.
• Try it out
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

Customer Portal
• Check your balance, account history, or make a payment any time

New Customer Signup
• Sign up for service

TWSI Terms of Service
• Everything you need to know about what to expect as a customer

ACH Direct Deposit Online Form
• The easiest way to pay your bill

Frequently Asked Questions: Customers
• The most common questions our customers ask

Frequently Asked Questions: General
• General questions about Tennessee Wastewater

Do's and Dont's for Effluent Collection
• Adenusฎ Homeowner's Manual

General Information
• Regulatory, Contact, and Maintenance info
Copyright © 2018 Adenus Group. All rights reserved.
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851 Aviation Parkway
Smyrna, TN 37167

Customer Care: 888.4.ADENUS
Maintenance Hotline: 877.669.0786