Environmental Engineering in Mississippi

Mississippi's environmental engineering market -- 485 employed professionals ranked #34 nationally at a $69,000 average salary -- is among the smallest and lowest-compensated in the nation, reflecting the state's developing economy, modest industrial base, and environmental regulatory framework that has historically prioritized economic development alongside environmental protection. However, Mississippi's environmental challenges are genuine and consequential -- the state's poultry and catfish aquaculture industries create significant water quality challenges, its Gulf Coast industrial corridor requires environmental compliance engineering, and its position at the bottom of the Mississippi River delta means the state receives accumulated pollution from the entire watershed upstream. Major Employers: The Mississippi Department of Environmental Quality (MDEQ) is the state's primary environmental regulatory agency, with offices in Jackson managing Air, Water, and Waste programs and six field offices statewide. MDEQ administers Mississippi's NPDES permit program (delegated from EPA), operates the state's solid and hazardous waste programs, and oversees the Petroleum Branch and Remediation Branch for contaminated site cleanup. Environmental consulting firms serving Mississippi include national firms (AECOM, Tetra Tech, CDM Smith) with regional offices and Mississippi-specific firms such as Stantec (Jackson), Pickering Firm (Memphis-based but Mississippi practice), and various regional environmental services companies. Ingalls Shipbuilding (Pascagoula -- Huntington Ingalls Industries) employs environmental engineers for industrial stormwater, wastewater pretreatment, and air quality compliance at one of the nation's largest naval shipbuilding facilities. The oil and gas industry on the Gulf Coast (Chevron Phillips Chemical at Cedar Point, Mississippi Power's power generation facilities) employs environmental engineers for major industrial compliance programs. The poultry processing industry -- Tyson Foods, Sanderson Farms, Peco Foods -- employs environmental engineers for wastewater treatment at processing facilities across the state. MDEQ's Remediation Branch manages an active portfolio of Superfund-equivalent and voluntary cleanup sites including legacy industrial sites in Jackson and the Gulf Coast petroleum contamination from the Deepwater Horizon spill's onshore impacts. Key Practice Areas: Municipal water and wastewater environmental engineering is Mississippi's largest practice area -- the state has hundreds of municipalities with aging and inadequate water and wastewater systems, and federal funding (USDA Rural Development, EPA State Revolving Fund) is driving a significant infrastructure improvement program that requires environmental engineering for design, permitting, and construction oversight. Agricultural water quality management -- nutrient and sediment loading from the state's poultry litter land application, catfish pond discharges, and row crop agriculture to the Pearl, Yazoo, and other Mississippi waterways -- is a major environmental engineering challenge. The Yazoo Backwater Area -- a large floodplain in the Mississippi Delta region -- has been the subject of long-running environmental controversies over agricultural drainage pumps that would affect wetlands, engaging environmental engineers in ecological impact assessment for decades.

Mississippi environmental engineering careers offer early responsibility in a market where the volume of needed work consistently exceeds the available professional workforce, and where federal infrastructure funding is creating genuine career opportunities in rural water and wastewater engineering. Compensation is below national averages but the state's very low cost of living partially offsets this. Typical Career Trajectory:

• Staff Environmental Engineer (0-3 years): $50,000-$63,000 -- Entry-level roles at MDEQ, consulting firms, or poultry/food processing environmental departments. Mississippi entry-level environmental engineers most commonly begin in Phase I/II ESA work (given the volume of commercial and industrial property transactions), stormwater compliance, or rural water system design support funded by USDA Rural Development grants.
• Project Environmental Engineer (3-6 years): $63,000-$80,000 -- Managing MDEQ-regulated site cleanups, NPDES permit applications for food processing facilities, or rural wastewater system design projects. PE licensure obtained. Experience with USDA Rural Development grant program procedures and MDEQ's relatively streamlined permitting processes creates career differentiation in this small market.
• Senior Environmental Engineer (6-12 years): $80,000-$100,000 -- Leading significant projects. Senior environmental engineers in Mississippi most commonly work in the largest consulting firms (AECOM, Stantec) or in-house at the state's largest industrial employers (Ingalls Shipbuilding, Chevron Phillips). MDEQ senior staff lead the state's major permit and remediation programs.
• Principal / Practice Director (12+ years): $100,000-$128,000+ -- The most senior Mississippi environmental engineering positions are at the largest employers in the Gulf Coast industrial corridor and at MDEQ's central office in Jackson. Mississippi's small market means senior positions are limited and well-known within the professional community.

Rural Water Infrastructure as Career Foundation: Mississippi's extraordinary need for rural water and wastewater infrastructure improvement -- the state ranks last or near-last nationally in water system quality indicators -- creates a career foundation in rural water engineering that is meaningful, consistently funded (USDA provides more Mississippi water infrastructure funding than any other state), and builds a technical credential in small system engineering that is broadly applicable across the rural South.

Mississippi's $69,000 average environmental engineering salary is below the national average -- the lowest among the 10 states in this batch -- but must be evaluated against the state's extraordinarily low cost of living, which is consistently the lowest in the nation. Mississippi has no income tax (eliminated effective 2022, being phased to zero by 2026). Jackson Metro: Mississippi's primary environmental engineering market. MDEQ and consulting firm environmental engineering salaries of $68,000-$98,000 for experienced engineers. Cost of living in Jackson is approximately 20-28% below the national average. Median home prices of $140,000-$210,000 -- among the most affordable of any state capital metro in the nation. Gulf Coast (Gulfport / Biloxi / Pascagoula): Industrial and shipbuilding environmental compliance at $70,000-$100,000 against a cost of living near or below the national average. Environmental engineers at Ingalls Shipbuilding earn at the upper end of the Mississippi range given the industrial facility's complexity. No Income Tax Value: Mississippi's elimination of state income tax is among the most significant financial advantages in the nation for environmental engineers -- an engineer earning $69,000 in Mississippi with no state income tax has take-home equivalent to earning $73,000-$76,000 in most states with income tax. Combined with the nation's lowest cost of living, Mississippi environmental engineers achieve real purchasing power that substantially exceeds what the nominal salary figure suggests. Purchasing Power: An environmental engineer earning $69,000 in Jackson has real purchasing power roughly equivalent to $100,000-$110,000 in Raleigh or $145,000+ in Washington D.C. -- a significant effective compensation advantage that makes Mississippi genuinely financially attractive for environmental engineers who prioritize homeownership and personal financial stability over urban amenities.

The Mississippi Board of Licensure for Professional Engineers and Surveyors administers PE licensure for environmental engineers. Mississippi's process is efficient and the state has straightforward reciprocity with neighboring southeastern states. Mississippi PE Licensure Pathway:

• FE and PE Exams: Standard NCEES process. Mississippi State University (Starkville -- strong civil and environmental engineering programs), University of Mississippi (Oxford -- civil engineering with water resources focus), and Jackson State University prepare Mississippi's environmental engineering pipeline. MSU's civil and environmental engineering programs have strong connections to Mississippi's water quality, agricultural nonpoint source, and rural infrastructure sectors.
• 4 Years of Progressive Experience: Under PE supervision across civil, environmental, chemical, and water resources disciplines.
• PE Environmental or Civil Engineering Exam: Standard NCEES exams accepted. Mississippi environmental engineers most commonly take the Civil PE (WRE depth) or Environmental Engineering PE exam.

Mississippi-Specific Regulatory Credentials: MDEQ State of Mississippi Nonpoint Source Management Program familiarity -- Mississippi's programs for agricultural nonpoint source pollution management, particularly for the Yazoo-Mississippi Delta agricultural area. MDEQ's Petroleum Branch procedures for underground storage tank release assessment and cleanup -- petroleum remediation is a consistent Mississippi practice given the state's many rural UST sites. MDEQ's NPDES general permit requirements for construction sites (Mississippi's Construction Stormwater GP) and for CAFO facilities. USDA Rural Development Water and Environmental Program (WEP) application procedures -- essential knowledge for environmental engineers managing rural water and wastewater infrastructure projects in Mississippi. Key Professional Certifications: CPESC (Certified Professional in Erosion and Sediment Control) -- valuable for Mississippi's active highway and construction stormwater compliance market. LEED AP -- growing relevance in Mississippi's federally funded public building and infrastructure market. HAZWOPER 40-hour -- required for contaminated site work at Gulf Coast industrial and Superfund sites.

Mississippi's environmental engineering outlook is cautiously positive -- federal infrastructure investment is driving rural water and wastewater project construction at historic rates, and the no-income-tax environment is beginning to attract environmental engineering talent from neighboring states. The state's modest industrial base limits the upper ceiling of the environmental engineering market's size, but the fundamental demand for clean water engineering in a state with significant water infrastructure deficits ensures consistent employment. Bipartisan Infrastructure Law Rural Water Investment: Mississippi is one of the largest per-capita recipients of federal Clean Water and Drinking Water State Revolving Fund assistance in the nation. The Bipartisan Infrastructure Law's additional water infrastructure funding ($55 billion nationally) is providing Mississippi municipalities and rural water associations with resources to address long-deferred water system improvements -- each project requires environmental engineering for system assessment, design, environmental review, and construction management. This program represents the most significant sustained environmental engineering investment in Mississippi's history. PFAS at Military Sites: Mississippi's Keesler Air Force Base (Biloxi) and Columbus Air Force Base used AFFF for decades, and PFAS groundwater investigations at these installations are generating new environmental engineering workscopes. The Mississippi Gulf Coast's relatively shallow water table and proximity to populated coastal communities makes PFAS containment engineering particularly important. Gulf Coast Environmental Recovery: The 2010 Deepwater Horizon oil spill's Natural Resource Damage Assessment (NRDA) settlement allocated significant resources to Gulf Coast ecological restoration -- restoration projects involving marsh creation, oyster reef restoration, and coastal wetland enhancement are being implemented along Mississippi's Gulf Coast, creating environmental monitoring and construction oversight engineering demand. No Income Tax Attraction: Mississippi's elimination of state income tax is beginning to influence environmental engineering career decisions, with some experienced engineers from neighboring states with higher income taxes considering Mississippi employment. Workforce Projection: Environmental engineering employment in Mississippi is expected to grow 4-6% over the next five years, with rural water infrastructure as the primary driver.

Environmental engineering in Mississippi is grounded in practical necessity -- the state has some of the nation's most urgent water infrastructure challenges, an active Gulf Coast industrial corridor, and environmental conditions shaped by the state's position at the bottom of the nation's greatest river basin. At a Consulting Firm (Jackson or the Gulf Coast): An environmental engineer on a Monday morning might begin reviewing the final design plans for a rural water system upgrade in Clay County -- a small town whose water distribution system was built in the 1950s and whose aging cast iron pipes and undersized treatment plant regularly fail to meet Safe Drinking Water Act standards. The engineer is reviewing the USDA Rural Development loan and grant application package, verifying that the environmental report (reviewing potential impacts to historic resources, wetlands, and floodplains) meets USDA's environmental review requirements for the project's funding eligibility. After the design review, the engineer drives to a former dry cleaning facility in Ridgeland to conduct a Phase II Environmental Site Assessment -- collecting soil samples from the hot zone area identified in the Phase I report where historical solvent use is suspected and arranging sample shipment to the laboratory for PCE and TCE analysis. In the afternoon, the engineer is back in the office preparing the stormwater pollution prevention plan for a new commercial development in Flowood -- completing the Notice of Intent (NOI) for MDEQ's Construction General Permit and coordinating the SWPPP training requirement for the contractor's site supervisor. At MDEQ (Jackson): An MDEQ environmental engineer in the Water Quality Permits Branch might spend a morning reviewing an NPDES permit renewal application for a catfish processing facility on the Sunflower River in the Delta -- evaluating whether the facility's proposed treatment technology upgrades are sufficient to meet the permit's oxygen demand and ammonia effluent limits while considering the receiving stream's assimilative capacity. Mississippi Lifestyle: Mississippi environmental engineers appreciate the state's genuinely accessible lifestyle -- exceptional affordability, the Gulf Coast's fishing and beaches, the Delta's blues music heritage, and the deep hospitality of Mississippi communities create a professional and personal environment that those who choose it find deeply satisfying despite the state's well-documented economic and infrastructure challenges.