Skip to main content

Northwest Area Water Supply (NAWS) Final Design And Construction Services

Northwest Area Water Supply (NAWS) Final Design And Construction Services
Northwest Area Water Supply (NAWS) Final Design And Construction Services

Location:  Northwest North Dakota
Client:  North Dakota State Water Commission


Northcentral and northwest North Dakota have suffered through both flood and drought in recent history. Along with the economic struggle that accompanies these extremes in a largely agricultural economy, residents have also struggled to obtain and maintain a safe, affordable water supply.

The Project

In the late 1980s, the concept of the Northwest Area Water Supply (NAWS) began. Since that time, HEI and our partners at MWH Global (now part of Stantec) have provided a host of professional services to move the concept forward to a reality. Services included pipeline routing and hydraulic analysis, an environmental assessment (EA) and environmental impact statement (EIS) consultation, water quality bench scale and pilot plant studies, user rate analyses, surveying and mapping, preliminary and final design services, and construction management services.

Because of funding uncertainty and legal challenges surrounding the project, planning and construction phasing flexibility has been a hallmark of NAWS. The vision is to provide a safe, reliable water supply at an affordable cost to around 60,000 people throughout a 5,000-square-mile area. HEI’s design team has been flexible in working with many shifting deadlines and priorities. Developing realistic solutions to meet these challenges was accomplished through a long string of successful large-scale, multi-phase water supply, treatment, and distribution projects.

The total cost for the NAWS project is currently estimated around $200 million, and nearly half of that amount has been constructed to date. This multi-year project is continuously working to meet the ambitious goal to supply water throughout the region and HEI has provided consistent and local consultation throughout the project life.

Learn more about this project that was featured in HEI's 2019 fall/winter newsletter that you can read here.