North Yellowstone Sanitary Sewer Line Project Nears Completion

A major infrastructure improvement serving three eastern Idaho communities is nearing completion. The North Yellowstone Sanitary Sewer Line Project, a $9 million collaborative investment by the Cities of Rexburg, Sugar City, and Teton, will improve wastewater infrastructure, help protect local groundwater, and support future community growth.

The project involved replacing, realigning, and increasing the capacity of the existing sanitary sewer line extending from Moody Road to Riverside Park in Rexburg. Originally constructed around 1980, the aging sewer line had severely deteriorated from age and was in need of replacement. Construction on the new line first began in April of 2025. Reaching completion is a milestone for many in the community. 

The new, higher-capacity line will provide a more reliable means of transporting wastewater from northeast Rexburg, Sugar City, and Teton to the area’s wastewater treatment plant. Replacing the aged infrastructure will also help reduce the risk of wastewater leaks that could affect local groundwater, protecting an important natural resource while accommodating continued growth in all three communities.

A Collaborative Investment

The $9 million project was partially funded by a $5,000,543 grant from the U.S. Environmental Protection Agency (EPA). The remaining project costs were funded by the Cities of Rexburg, Sugar City, and Teton.

Through this partnership, the three communities have made an important investment in the long-term reliability of their shared wastewater infrastructure and the protection of local water resources.

With construction nearing completion, the North Yellowstone Sanitary Sewer Line Project represents another step toward maintaining essential public services and preparing for the future needs of the region.