Water/Wastewater Engineers
SOC Code: 17-2051.02
Architecture & EngineeringWater and wastewater engineers design, evaluate, and oversee the construction and operation of systems that deliver safe drinking water to communities, collect and treat wastewater before returning it to the environment, and protect vulnerable areas from flood damage. Their work spans the full infrastructure lifecycle—from initial feasibility studies and hydraulic modeling through detailed engineering design, construction administration, and operational optimization. They combine rigorous civil and environmental engineering fundamentals with deep regulatory fluency, ensuring that every system they design meets the exacting standards of the Safe Drinking Water Act, Clean Water Act, and a dense web of state and local environmental codes. As the United States faces both aging infrastructure replacement and the intensifying demands of population growth and climate change, these engineers occupy a central position in defining how communities will sustain themselves for the next century.
Salary Overview
Median
$99,590
25th Percentile
$78,790
75th Percentile
$128,290
90th Percentile
$160,990
Salary Distribution
Job Outlook (2024–2034)
Growth Rate
+5.0%
New Openings
23,600
Outlook
As fast as average
Key Skills
Knowledge Areas
What They Do
- Provide technical direction or supervision to junior engineers, engineering or computer-aided design (CAD) technicians, or other technical personnel.
- Design domestic or industrial water or wastewater treatment plants, including advanced facilities with sequencing batch reactors (SBR), membranes, lift stations, headworks, surge overflow basins, ultraviolet disinfection systems, aerobic digesters, sludge lagoons, or control buildings.
- Evaluate the operation and maintenance of water or wastewater systems to identify ways to improve their efficiency.
- Design or select equipment for use in wastewater processing to ensure compliance with government standards.
- Design water distribution systems for potable or non-potable water.
- Analyze and recommend chemical, biological, or other wastewater treatment methods to prepare water for industrial or domestic use.
- Identify design alternatives for the development of new water resources.
- Design water runoff collection networks, water supply channels, or water supply system networks.
Tools & Technology
★ = Hot Technology (in-demand)
Education Requirements
Typical entry-level education: Bachelor's Degree
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A Day in the Life
A typical workday begins with reviewing hydraulic model outputs or construction submittals for an active design project—checking pipe sizing, pressure zone calculations, or treatment process unit sizing against regulatory requirements and client standards. Morning often brings a team coordination call with civil, structural, and electrical sub-discipline engineers to resolve interdependencies in a complex pump station design package. Afternoons may shift to meeting with a municipal client to review 30% design documents, discuss value engineering options for a water treatment plant expansion, or respond to regulator questions on a draft facility plan. Technical memo writing, drawing review, specification development, and regulatory agency coordination with state environmental departments fill the remaining hours across multiple concurrent project tasks.
Work Environment
Water and wastewater engineers split their time between office-based design work and field activities including construction site observation, pump station inspections, and client facility visits. Design phases are predominantly desk-intensive, involving AutoCAD Civil 3D, hydraulic modeling software like InfoWater, EPANET, or SewerGEMS, and document preparation using engineering office platforms. Construction administration phases bring regular site visits to observe contractor progress, review installations against design documents, and resolve field conditions. Consulting engineers experience significant project deadline pressure across multiple simultaneous assignments; public utility engineers have more stable workloads tied to capital improvement program cycles and facility operations schedules.
Career Path & Advancement
Most water/wastewater engineers enter the field with a bachelor's degree in civil, environmental, or chemical engineering, beginning as EIT (Engineer in Training) staff under senior PE supervision performing hydraulic calculations, modeling, design support, and report writing. Passing the Fundamentals of Engineering (FE) exam early in a career, followed by four or more years of qualifying experience and the Principles and Practice of Engineering (PE) exam, leads to the Professional Engineer license required to seal design documents. Mid-career engineers lead project design teams and client relationships independently. Principal engineers and department leaders at consulting firms or senior engineers at public utilities manage multimillion-dollar programs, develop market strategy, and mentor the next generation of specialists.
Specializations
Drinking water system engineers design treatment plants—incorporating coagulation, filtration, disinfection, and emerging contaminant removal technologies—along with transmission mains, pump stations, storage tanks, and distribution networks serving municipalities and water districts. Wastewater collection and treatment engineers design gravity sewer systems, force mains, lift stations, and treatment plants incorporating biological nutrient removal, membrane bioreactor technology, and biosolids management. Stormwater and flood control engineers design detention basins, green infrastructure, culverts, floodplain modifications, and drainage systems to manage runoff and reduce flood risk. Asset management and rehabilitation specialists evaluate existing infrastructure condition, develop capital improvement prioritization frameworks, and design trenchless rehabilitation solutions for deteriorating buried pipe systems.
Pros & Cons
Advantages
- ✓Critical public health and environmental mission provides deep professional meaning and social purpose
- ✓Strong and growing compensation driven by PE licensure requirements, infrastructure investment tailwinds, and workforce shortages
- ✓PE licensure creates career mobility across any jurisdiction and project type nationwide
- ✓Intellectually rich technical work integrating hydraulics, chemistry, environmental science, structural engineering, and regulatory analysis
- ✓Federal infrastructure investment creating decades of project backlog and career opportunity at consulting firms and utilities
- ✓Clear professional development pathway from EIT through PE to project manager and principal engineer with associated compensation progression
- ✓Work on critical infrastructure that directly protects the water safety and flood resilience of communities for generations
Challenges
- ✗PE exam and licensure process is rigorous, time-consuming, and requires sustained investment beyond regular working hours
- ✗Consulting firm environments involve heavy project deadline pressure, billing rate targets, and frequent context-switching between multiple client projects
- ✗Design errors discovered during construction or operation carry significant professional and financial liability implications
- ✗Water and wastewater regulatory frameworks are exceptionally complex and continuously evolving, requiring ongoing compliance education
- ✗Construction site visits expose engineers to physical safety hazards, weather conditions, and demanding travel schedules
- ✗Budget and schedule constraints imposed by government clients frequently limit engineering solutions that would better address long-term technical objectives
- ✗Career advancement into senior management at large consulting firms is highly competitive and often requires business development capabilities beyond technical expertise
Industry Insight
Federal infrastructure investment through the Bipartisan Infrastructure Law is directing an unprecedented $55 billion toward water and wastewater systems—funding lead service line replacements, PFAS treatment technology deployment, wastewater plant upgrades, and resilience improvements for aging infrastructure—creating a multiyear wave of project work for engineering firms and public utilities. PFAS contamination has created a new generation of water treatment engineering challenges as EPA's enforceable Maximum Contaminant Levels finalized in 2024 require utilities nationwide to install advanced treatment systems. Digital water technology—real-time distribution system monitoring, AI-assisted optimal control, digital twin simulations—is transforming how engineers design and operate water systems, creating demand for engineers with software integration and data analytics capabilities alongside traditional hydraulic design skills. The national shortage of licensed professional engineers in water and environmental disciplines is projected to worsen as baby boomer PEs retire, creating strong upward pressure on compensation and career mobility for early- and mid-career professionals.
How to Break Into This Career
A bachelor's degree in civil, environmental, or chemical engineering from an ABET-accredited program with relevant coursework in hydraulics, water treatment, and environmental engineering is the standard entry credential. Taking the FE exam immediately after graduation is strongly advised, as it becomes progressively harder to pass while working full time. Internships and co-op programs with civil/environmental engineering consulting firms or municipal utilities provide invaluable practical exposure and networking connections that drive the overwhelming majority of early-career offers. The American Water Works Association (AWWA) and Water Environment Federation (WEF) both maintain active young professional programs, conferences, and technical resources that support career development and hiring network access.
Career Pivot Tips
Civil engineers who have worked in transportation, site development, or municipal infrastructure bring foundational hydraulics and construction document knowledge that transfers directly to water/wastewater projects with targeted technical training in water system design. Environmental engineers from air quality, remediation, or solid waste consulting possess the regulatory framework knowledge and environmental analysis skills that adapt readily to the water quality compliance dimensions of the specialty. Chemical engineers with process industry backgrounds understand unit operations, fluid mechanics, and process optimization in ways that translate surprisingly well into water treatment plant design and optimization. Early investment in AWWA and WEF membership, attendance at Water Infrastructure Conference and the WaterNow Summit, and pursuit of PE licensure in a water-relevant state are high-leverage accelerators for career changers seeking to establish credibility in the sector.
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