About Us
National Water Infrastructure (NWI) is a modern infrastructure company committed to delivering clean water through reliable, state-of-the-art systems — offering a proven model for communities facing aging infrastructure.
NWI invests in high-quality sewer treatment solutions with a goal of returning the healthiest water possible to the environment. Founded in 1994, NWI has grown into one of Louisiana’s largest privately owned sewer utilities, serving more than 23,000 customers across the state.
All NWI systems have been upgraded to maintain compliance with local, state, and federal regulations as we are regulated by the Louisiana Public Service Commission, LDEQ, and LDH. As we move forward, we will continue upgrading plants that discharge into waterways deemed impaired by DEQ to remain in substantial compliance.
Our Vision
Modernizing infrastructure to meet the needs of today while planning for the challenges of tomorrow.
Our Vision in Action
The NWI Ascension Parish Regionalization Project reflects this commitment: We are investing in a modern infrastructure solution to support cleaner waterways, stronger communities, and a more reliable sewer system for generations to come.