Council approved the two plans—the first update since 2016 for water and 2018 for wastewater—at a Dec. 15 meeting.
Work on both plans began in February, with engineering firm Garver developing the wastewater plan and engineering firm Freese and Nichols developing the water plan.
Each plan includes projections for water and wastewater demand over the next 25 years as well as a list of recommended projects.
In the wastewater plan, expansions and improvements at the city's wastewater treatment plant constitute the bulk of the recommended projects. They total approximately $185 million over the next five years and approximately $470 million over the next 25 years.
Key projects in the water master plan include several new waterlines and expansion to the city's main frame switch pump station. Proposed water projects total around $128 million over the next five years and $195 million through 2047.
Council Member Dan Thornton said adopting the master plans does not been the city must adhere exactly to the projects as laid out; instead, they act as a general guide for when projects should be completed and how much they could cost.
"You don't know what growth is going to do," Thornton said. "Three years from now, depending on how the city grows, then you adjust how quickly you move on some of these [projects]."
Amid growing demands for water, officials said the updated plans will help the city keep pace with its water and wastewater needs.
