Water/Wastewater Engineering Intern

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

AECOM is seeking a Water/Wastewater Engineering Intern to be based in Chelmsford, MA.

This position is designed to introduce and build essential, hands-on skills that differ from those attained in the academic area and help to enhance the transition from student to professional.

This position is expected to begin in May 2026.

Internships are designed to introduce and build essential, hands-on skills that differ from those attained in the academic arena and help to enhance the transition from student to professional. Interns are assigned duties that will provide a broad, well-rounded learning.

Internships at AECOM offer students in undergraduate and graduate programs the opportunity to gain valuable hands-on experience in engineering, design, and infrastructure projects that make a real-world impact. Interns work with cutting-edge technology, learn industry best practices, and collaborate with experienced professionals in a globally recognized firm. The program fosters both technical and professional skill development while providing networking opportunities that can enhance future career prospects. Additionally, AECOM’s dedication to innovation and sustainability enables interns to contribute to meaningful projects that help shape communities and the built environment.

Job responsibilities may include but are not limited to:

• Perform assignments requiring the application of standard techniques, procedures and criteria to carry out engineering tasks. Assignments are designed to further develop judgment and understanding of professional and ethical responsibilities.
• Exercise judgment limited to developing details of work in making preliminary selections and adaptations of engineering alternatives
• Water / wastewater treatment evaluation and design.
• Pump station evaluation and design.
• Water distribution system hydraulic modeling, analysis, and design.
• Sewer collection system evaluation and design.
• Stormwater modeling, analysis, and design.
• Prepare design drawings, plans, sections, details, and profiles/sections within the Autodesk Civil 3D and/or  AutoCAD MEP.
• Assist in the development and application of hydrologic and hydraulic modeling and analyses related to floodplain management studies and a variety of water resource projects
• Prepare engineering related calculations and develop drawings and visual aids
• Work under supervision of a project manager or senior-level team member

Minimum Requirements:

• Candidates must be pursuing a bachelor’s degree in Civil, Environmental, or Chemical Engineering with an emphasis in water resources, water or wastewater treatment, conveyance/pipelines, or related field and must have completed at least two years of study. Candidates who have graduated with a Bachelor’s degree and plan to continue with the Master’s degree are eligible to apply for these positions. Recent graduates must have been enrolled in their bachelor’s degree in the most previous school term with an interest in pursuing an advanced degree in the same or similar discipline at the conclusion of the internship.

Preferred Qualifications:

• A GPA of 3.0 of higher
• Ability to work productively in a collaborative team environment, and demonstrate growth potential as well as a desire to learn
• A strong sense of commitment, a willingness to learn, and a desire to work in a dynamic deadline driven environment
• Knowledge of hydrologic and hydraulic engineering concepts through coursework or work experience
• Proficient in Microsoft Office programs
• Detail oriented while still able to understand/comply with the big picture/goals of a project
• Ability to multi-task
• Strong logic skills and writing skills
• Good communication skills
• Documents time and effort accurately
• Work under supervision of a project manager or senior-level team member

• Relocation assistance is not available for this position.
• Sponsorship for US employment authorization is not available now or in the future for this position.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2024. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.