Water/Wastewater Engineer

ISG; Sioux Falls (SD); On-site; USD 65,000 - 190,000; Full time

Benefits offered by this job

Medical, dental, and vision

Paid time off

Paid holidays and paid volunteer time

Paid parental leave

Bi-annual profit sharing

Employee Ownership Stock Plan (ESOP)

401K retirement plan

Life insurance

HSA and FSA options

Bereavement leave

Supplemental voluntary benefits

Short term and long-term disability

Parking reimbursement

Cell phone plan reimbursement

Mileage reimbursement for ISG-approved

Job summary

ISG, a full-service architecture and engineering firm, seeks a Water/Wastewater Engineer in Sioux Falls, SD. You will work on municipal and industrial projects, leading design through construction while ensuring regulatory compliance and quality.

You will collaborate with engineering leaders Casey Patton and Brian Hiles and contribute to award-winning projects across the U.S. ISG emphasizes ownership, growth, and a supportive culture.

Qualifications

• Bachelors degree in Civil, Environmental, or Chemical Engineering is required.
• Professional Engineer (PE) license or Engineer-in-Training (EIT) certification.
• 4–10+ years in water/wastewater design and drafting of treatment facilities, storage, and distribution systems.
• Familiarity with AutoCAD, GIS, hydraulic modeling software, and Microsoft Office.
• Strong analytical, problem-solving, and communication skills.

Responsibilities

• Develop comprehensive plans for water distribution networks, wastewater collection systems, and treatment facilities.
• Design pumping stations, pipelines, lift stations, and storage tanks.
• Perform hydraulic modeling and hydrological analyses for design optimization.
• Lead cross-functional teams through planning, design, construction and commissioning.
• Prepare detailed reports, cost estimates, and construction documentation.
• Manage project timelines and budgets while ensuring regulatory compliance.
• Provide technical guidance during construction and operations for quality and performance.
• Diagnose system issues and propose engineering solutions.
• Conduct feasibility studies and environmental impact assessments.
• Ensure designs meet federal, state, and local regulations.
• Prepare environmental documentation and facilitate permitting processes.
• Collaborate with municipalities, utility providers, developers, and government agencies.
• Translate complex technical concepts for non-technical stakeholders.

Skills

4–10+ years in water/wastewater design

Strong analytical, problem-solving, &沟

Education

Bachelor’s degree in Civil, Environmental, or Chemical Engineering

PE license or EIT certification

Tools

AutoCAD

GIS

Hydraulic modeling software

Microsoft Office

Job description

Description

Founded in 1973, ISG is a multi-disciplinary, full-service architecture, engineering, planning, and interior design firm, supporting clients throughout the nation. ISG is looking to add a Water/Wastewater Engineer to our dynamic engineering team. As a Water/Wastewater Engineer, you will make a real difference for Municipal and Industrial clients across the U.S., contributing to projects that improve lives and communities. We are a full-service, multi-disciplinary team, who perform award winning work in planning, design, survey, and construction.

Department: Water/Wastewater

Location: Sioux Falls, SD

Compensation: $65,000 - $190,000 / year

You will work alongside industry leaders, Casey Patton, PE, Water/Wastewater Practice Group Leader, and Brian Hiles, Senior Water/Wastewater Engineer, along with several other innovative Wastewater professionals.

Essential Duties

• Develop comprehensive plans for water distribution networks, wastewater collection systems, and treatment facilities
• Design key infrastructure components including pumping stations, pipelines, lift stations, and storage tanks
• Perform hydraulic modeling and hydrological analyses to support system design and optimization
• Lead cross-functional teams through all phases of project delivery—from planning and design to construction and commissioning
• Prepare detailed technical reports, cost estimates, and construction documentation
• Manage project timelines, budgets, and compliance with regulatory standards
• Provide technical guidance during construction and operational phases to ensure quality and performance
• Diagnose system issues and propose effective engineering solutions
• Conduct feasibility studies and environmental impact assessments
• Ensure all designs adhere to federal, state, and local regulations
• Prepare environmental documentation and facilitate permitting processes
• Collaborate with municipalities, utility providers, developers, and government agencies
• Translate complex technical concepts into clear, accessible information for non-technical stakeholders

As an ISG employee owner, you will continue to grow in your career. You’ll learn from us, and we’ll learn from you. You’ll have the freedom and autonomy to do your best work with plenty of support along the way. Our culture is essential to our success and your engagement in it.

Here are some projects we've worked on recently that might give you a better sense of what you'll be doing day to day:

• Clarion Water Treatment System
• Hartford, SD Reclamation Facility Improvements

We’ve listed a compensation range that reflects our expectations for this role, including both direct and indirect components. We understand that your experience and value may fall outside of this range. If you feel you're a strong fit but your compensation needs differ, we’re open to a conversation—let’s talk.

Skills, Knowledge and Expertise

• Bachelor’s degree in Civil, Environmental, or Chemical Engineering
• Professional Engineer (PE) license or Engineer-in-Training (EIT) certification
• 4–10+ years in water/wastewater design and computerized drafting of new and rehabilitated water treatment facilities, groundwater wells, water storage facilities, water distribution systems, pumping stations, wastewater treatment facilities, collection systems, and lift stations.
• Familiarity with AutoCAD, GIS, hydraulic modeling software, and Microsoft Office
• Strong analytical, problem-solving, and communication skills
• Ability to work independently and in teams
• Knowledge of industry standards

ISG Employee Owner Benefits

• Medical, dental, and vision
• Paid time off, pro-rated amount available on your start date
• Paid holidays and paid volunteer time
• Paid parental leave
• Bi-annual profit sharing
• Employee Ownership Stock Plan (ESOP)
• 401K retirement plan
• Life insurance
• HSA and FSA options
• Bereavement leave
• Supplemental voluntary benefits
• Short term and long-term disability
• Parking reimbursement, varies on office location
• Cell phone plan reimbursement
• Mileage reimbursement for ISG-approved travel