Engineering Internship - Water and Sewer

The City of O'Fallon, MO is looking to hire Engineering Interns in our Water and Sewer Department for the Summer of 2026. Are you looking for an internship position where you'll use and build on your water distribution system knowledge in a municipal setting? Our Interns earn a competitive wage of $23.00 hourly.

As part of our Water and Sewer Department, you will be responsible for performing routine and complex administrative and technical work. Generally, your schedule will be daytime hours Monday through Friday.

Our Engineering Interns fill various roles within the Water and Sewer department. Some of the duties and responsibilities for Interns in these areas include :

• Assisting in the development of short and long range plans : gathers, interprets and prepares data for studies, reports and recommendations; coordinates activities with other departments and agencies, as needed.
• Providing technical advice to supervisor.
• Analyzing data gathered, developing information and considering alternate methods of proceeding.
• Organizing and documenting findings of studies and preparing recommendations for implementation of new systems, procedures or organizational changes.
• Conferring with personnel concerns to assure smooth functioning of newly implemented systems or procedure.
• Preparing a variety of studies, reports, and related information for decision-making purposes; conducts research, analysis, and prepares recommendations regarding proposals for programs, grants, services, budget, equipment, etc.
• Reviews plans, specifications and estimates for construction projects.
• Assists in the preparation of Council Agenda items and purchase order requests.
• Assists in preparing bid documents, advertisements and addenda.
• Reviews shop drawings, submittals, certified payrolls and test reports.
• Pays invoices for contracting engineering farms; prepares spreadsheets and invoices.
• Meets with residents concerning projects during design and construction.
• Reviews operational and laboratory data at the plant for compliance with permit requirements and other regulations.
• Assists plant management and supervisory personnel with researching and purchasing capital and miscellaneous items.
• Other duties as assigned or required.

We're looking for someone who is currently enrolled in an accredited college or university and have obtained the status of at least junior, with a working knowledge of the principles and practices of Civil Engineering, Environmental Engineering, Mechanical Engineering, Chemical Engineering or a closely related field. This person should be someone who can be relied upon to accurately record and maintain records and possess strong communication skills.

Could this be the opportunity for you? We look for employees who :

ABOUT THE CITY OF O'FALLON

With the philosophy of "family first," the City of O'Fallon, Missouri, has achieved phenomenal growth for more than four decades, making it one of the fastest-growing cities in the nation. The belief that the opportunity to live, work and play within the same community should be readily available supports the strong family values that are O'Fallon's greatest asset and the foundation on which the City continues to build its future. O'Fallon continues to receive national accolades.

O'Fallon, Missouri, has grown from small, rural roots into a thriving City that is home to international employers and more than 1,800 local businesses. With more than 91,000 residents, O'Fallon is now the second largest City in the St. Louis Metro Area, and the City has become a driving force in the region's economy. Working for the City allows you to be part of it all with competitive pay and a positive work environment. Apply today and join the team at one of the country's best cities. Don't miss out on this exciting opportunity to grow and excel!

ARE YOU READY TO JOIN OUR TEAM?

If you feel that you would be right for this position in O'Fallon, Missouri, please fill out our application at We look forward to meeting you!

The City of O'Fallon is an Equal Opportunity Employer and participates in E-Verify

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