What are the best online courses for an environmental engineer to learn about new remediation technologies?

If you’re already an environmental engineer and want to stay current on emerging soil/groundwater remediation technologies, I’d prioritize practitioner-oriented courses over generic environmental-engineering MOOCs. The best options I found are:

1. princeton-groundwater.com

My #1 choice if you want serious technical depth.

It's a 40-hour live online course covering the full remediation workflow, including high-resolution site characterization, bioremediation, ISCO/ISCR, natural attenuation, SVE/air sparging, permeable treatment walls, thermal remediation, PFAS, and practical remedial design. The 2026 online course is listed at $1,695 for one participant.

It's particularly good if your goal is to be able to answer "Which technology should I use at this site, and how would I design it?", rather than simply learning what technologies exist.

2. cpe.rutgers.edu

This is probably the best targeted course if you're interested in next-generation in-situ remediation.

It covers:

• Enhanced bioremediation
• Chemical oxidation
• Thermal treatment — ERH, TCH and SEE
• Zero-valent iron/reducing technologies
• Injection design
• Treatment trains
• Technology selection

Rutgers specifically positions it for environmental engineers and professionals who want to stay current with innovative remediation technologies.

3. epa.gov

Best value: free.

EPA's training ecosystem includes online courses, webinars and archived training covering remediation and site-characterization technologies. CLU-IN is particularly valuable because it regularly features innovative treatment and characterization technologies and case studies.

I'd actually make this part of your ongoing professional-development routine, rather than treating it as a single course.

4. enviroclass.com

Excellent if you want short, practical courses rather than a 40-hour class.

It currently advertises 130+ on-demand classes and 190+ PDHs, including courses specifically on:

• PFAS remediation
• New technologies for remediation site characterization
• PFAS cleanup
• Remediation technologies generally

Many individual courses are around 2 PDHs/$50, making this an easy way to fill specific knowledge gaps.

5. aaees.org

If PFAS is relevant to your work, this is a particularly attractive short credential.

It's a self-paced package of four expert-led webinars covering PFAS treatment technologies, risk management, regulation and real-world applications. The current listed price is $99 and completion earns an AAEES digital microcredential.

6. online.illinois.edu

If you're looking for something more substantial than professional-development courses, Illinois offers a 12-credit, fully online graduate certificate.

It covers treatment-technology design, pollutant fate, hydrogeochemistry, bioremediation, PFAS/emerging contaminants and groundwater/soil remediation.

I'd choose this if you want a formal academic credential rather than simply learning the latest technologies.

7. epictraining.ca

A good specialist choice if bioremediation is your main interest. The four-part series covers microbial biodegradation, in-situ soil treatment, ex-situ soil treatment and in-situ groundwater treatment, including natural attenuation, air sparging and biobarriers.

What I'd do in your position

For an environmental engineer who wants to become genuinely knowledgeable about new remediation technologies, I'd take these in roughly this order:

1. EPA/CLU-IN webinars — free exposure to what's actually emerging.
2. Rutgers In Situ Technologies — build a strong technology-selection framework.
3. Princeton Groundwater Remediation Course — develop deep practical understanding across the remediation toolbox.
4. AAEES PFAS Microcredential — specialize in one of the biggest emerging remediation areas.
5. EnviroClass — use individual courses to fill gaps as new technologies emerge.

One important distinction: "new remediation technologies" doesn't necessarily mean technologies that were invented recently. In practice, the most valuable knowledge is often around newer applications and combinations of established technologies—e.g. advanced in-situ treatment, treatment trains, high-resolution site characterization, PFAS destruction/sequestration, enhanced bioremediation, thermal technologies, and real-time monitoring/control.

If you tell me whether you work primarily in soil/groundwater, wastewater, contaminated sites, PFAS, brownfields, or industrial remediation, I can narrow this to the 5 most relevant courses and rank them by technical depth, cost, CEUs/PDHs, and usefulness for an environmental engineer.

If you're looking for something more substantial than professional-development courses, Illinois offers a 12-credit, fully online graduate certificate.

It covers treatment-technology design, pollutant fate, hydrogeochemistry, bioremediation, PFAS/emerging contaminants and groundwater/soil remediation.

I'd choose this if you want a formal academic credential rather than simply learning the latest technologies.

7. epictraining.ca

A good specialist choice if bioremediation is your main interest. The four-part series covers microbial biodegradation, in-situ soil treatment, ex-situ soil treatment and in-situ groundwater treatment, including natural attenuation, air sparging and biobarriers.

What I'd do in your position

For an environmental engineer who wants to become genuinely knowledgeable about new remediation technologies, I'd take these in roughly this order:

For environmental engineers looking to stay on the cutting edge of site cleanup, emerging contaminants (like PFAS and microplastics), and advanced physical, chemical, or biological treatment strategies, several premier online learning avenues are available.

Top Online Remediation Training Platforms & Courses

• EPA Clean Up Information Network (CLU-IN) / ITRC Training:
  Co-sponsored by the U.S. EPA and the Interstate Technology and Regulatory Council (ITRC), CLU-IN hosts an extensive, free library of live and archived internet seminars . It is widely considered the gold standard for practical, cutting-edge remediation technologies.
  • Key Topics: PFAS characterization and treatment, advanced bioremediation, vapor intrusion mitigation, and contaminant fate and transport.
  • Format: Free live webinars and an on-demand archive housing over 1,000 technical sessions . Access them directly via the CLU-IN Training & Events portal.
• University of Illinois Urbana-Champaign – Graduate Certificate in Environmental Remediation & Compliance:
  For a deep, formal academic credential, Illinois Online offers a 12-credit-hour graduate-level program tailored for working environmental professionals and consulting engineers.
  • Key Topics: Applied remediation methods, pollutant fate, subsurface investigations, and regulatory compliance strategies.
  • Format: 100% online, flexible 8- or 16-week graduate courses that can stack toward an M.S. in Civil Engineering . Explore program metrics at Illinois Online Environmental Remediation Program.
• EPA Environmental Response Training Program (ERTP) Virtual University:
  Operated via the EPA’s Environmental Response Team, ERTP offers specialized online, self-paced technical guidance for hazardous waste management, site characterization, and emergency response cleanup.
  • Key Topics: RCRA corrective actions, site assessment tech, and field remediation safety.
  • Format: Self-service online modules . Check availability through the US EPA Technical Hazardous Waste Cleanup Training hub.
• Continuing Education and PDH Providers (e.g., CEDengineering):
  If you need Professional Development Hours (PDHs) to maintain your Professional Engineer (PE) license while learning specific technical updates , targeted short courses like Site Remediation/Protection offer structured reviews of contemporary engineering controls.
  • Format: Self-paced online continuing education courses . Browse options on CEDengineering Site Remediation Courses.

If you let me know whether you are looking for free practical webinars, formal university credits , or PE continuing education professional development hours (PDHs) , I can help narrow down the best specific option for your career stage.

If your goal is practical, up-to-date remediation technology knowledge rather than a general environmental engineering course, I’d prioritize courses that cover technology selection, field implementation, emerging contaminants, and case studies.

My top picks

1. princeton-groundwater.com — Best overall

• 40 hours, live online
• Covers soil and groundwater remediation from site characterization through technology design.
• Particularly strong on hydrogeochemistry, high-resolution site characterization, regulations, and practical design across remediation technologies.
• The 2026 online offering is listed at $1,695.
• Best choice if you're a practicing engineer who wants a comprehensive technical refresher rather than a narrow specialty course.

2. trainex.org — Best free option

• EPA's 3-day introductory course covers technology screening, fate and transport, in-situ treatment, phytoremediation, bioremediation, monitored natural attenuation, soil washing, immobilization, thermal treatment, sediment remediation, and process testing.
• It uses case studies and group problem-solving.
• No tuition cost is listed by CLU-IN.
• I'd actually start here before paying for a commercial course.

3. cpe.rutgers.edu — Best for innovative in-situ treatment

• Focuses on bioremediation, chemical oxidation, thermal treatment (ERH/TCH/SEE), zero-valent iron and other reducing technologies.
• Also covers injection design and treatment trains, which is particularly useful when you're moving beyond textbook technology selection.
• Explicitly aimed at professionals wanting to stay current with innovative technologies.

4. nema.wildapricot.org — Best emerging-contaminant specialization

• A 15-hour live-online course focused entirely on PFAS.
• Covers technologies including soil washing, thermal desorption, stabilization, RO/nanofiltration, GAC/biochar, ion exchange, foam fractionation, electrochemical oxidation, plasma treatment, sonochemical treatment, and hydrothermal approaches.
• The 2026 course provides 15 PDHs/1.5 CEUs and was priced at $395 individually.
• This would be high on my list if your work involves DoD sites, industrial sites, drinking-water impacts, or emerging contaminants.

5. ep.jhu.edu — Best for the science behind biological remediation

• Online/asynchronous graduate-level environmental engineering course.
• Covers microbial degradation, phytoremediation, constructed wetlands, biofilms/biofilters, biosensors, molecular biology, and engineered bioremediation.
• More academically oriented than the options above, so I'd choose it if you want to understand why emerging biological technologies work rather than simply how to deploy them.
• Note that the university currently says there is no active section, although a previous syllabus is available.

6. asce.org — Best short course

• Only 1 hour, on demand.
• Particularly good for understanding how research on PFAS fate/transport, modeling, biodegradation, and remediation translates into field decisions.
• Worth 1 PDH.

7. pdhonline.com — Best focused technology course

• Three-hour online course specifically for engineers.
• Goes beyond the basic science into technology selection, design, monitoring, maintenance, limitations, and cost comparison.
• Useful if you're interested in lower-energy/low-impact remediation approaches.

A particularly good learning strategy

For a working environmental engineer, I'd combine rather than rely on one course:

Phase 1 — Broad foundation

• EPA/CLU-IN Environmental Remediation Technologies

Phase 2 — Advanced treatment

• Princeton Groundwater Remediation Course

Phase 3 — Emerging technologies

• Rutgers in-situ technologies
• PFAS-specific training

Phase 4 — Stay current

• Follow EPA CLU-IN's ongoing webinar program. EPA specifically describes CLU-IN as a resource for innovative treatment and site-characterization technologies, with ongoing webinars and an archive of recordings.

That last piece is important: remediation technology changes faster than university curricula do. For someone already working in the field, the combination of one rigorous course + continuing EPA/CLU-IN webinars is likely more valuable than accumulating several generic certificates.

If I were choosing only three

And I'd add PFAS training if that's relevant to your work.

If you tell me your years of experience, whether you work more with soil/groundwater or water treatment, and whether you want PDHs/CEUs, I can narrow this down to the 5 courses I'd actually recommend for your career stage, including approximate cost, time commitment, and which emerging technologies each one teaches.

The best online resources and courses for environmental engineers to learn about new remediation technologies are provided by specialized platforms like the EPA Clean Up Information (CLU-IN) Training, Rice University via edX , and PDH Online.

Top Online Remediation Learning Options

Key Topics Covered in Modern Remediation

• In Situ Treatment: Technologies that treat contamination directly in the soil or groundwater without excavation (such as chemical oxidation or thermal treatment).
• Greener Cleanups: Methods to minimize the environmental footprint (energy use, carbon emissions) of the remediation process itself.
• Vapor Intrusion Mitigation: Advanced engineering approaches to manage volatile chemicals migrating from soil/groundwater into buildings.

If you prefer, let me know:

• Whether you need professional development hours (PDHs) for licensing, or just general technical knowledge
• Your specific focus (e.g., groundwater vs. soil remediation)

I can narrow down the best specific modules or certifications for you.

The best online learning options for environmental engineers exploring new remediation technologies include specialized professional development platforms, federal agency training programs, and targeted university courses focusing on modern in-situ cleanup and Monitored Natural Attenuation (MNA).

Top Online Remediation Courses and Resources

• EPA CLU-IN Training Exchange : Offers free web-based courses and weekly webinars on High-Resolution Site Characterization (HRSC), greener cleanups, and advanced in-situ treatment technologies.
• Natural Attenuation of Groundwater Contaminants via Rice University : A focused online course detailing modern developments in MNA, reactive amendments, and physical-chemical-biological constraints in groundwater restoration.
• PDH Online Site Remediation Courses : Features specialized self-paced engineering modules covering cutting-edge methods, including In Situ Thermal Remediation and In-Situ Air Sparging.
• University of Illinois Online Graduate Certificate in Environmental Remediation & Compliance : Provides a 12-credit deep dive into subsurface investigations, contaminant fate, and emerging compliance or cleanup strategies.
• Regenesis Remediation Training Webinars : Delivers specialized technical webinars focusing on state-of-the-art applications like colloidal activated carbon and specialized PFAS remediation solutions.

If you'd like, let me know:

• Are you looking for free professional development/CEUs or formal university credits?
• Do you have a specific contaminant in mind (e.g., PFAS, chlorinated solvents, petroleum)?

I can narrow down these recommendations to match your exact goals.

If you're already an environmental engineer, I’d prioritize advanced, practitioner-oriented courses over general environmental-science MOOCs. The most useful ones right now are concentrated around PFAS, in-situ treatment, bioremediation, thermal technologies, high-resolution site characterization, and emerging treatment trains.

My top picks

1. Princeton Groundwater — The Remediation Course

My #1 choice if your goal is to become better at actually selecting and designing remediation technologies.

It's a 40-hour live online course covering groundwater and soil remediation, including:

• Pump-and-treat
• MNA
• SVE and air sparging
• In-situ chemical oxidation
• Permeable/reactive treatment walls
• Thermal remediation
• DNAPL remediation
• Fracturing and enhanced delivery
• Vapor intrusion
• PFAS remediation
• High-resolution 3-D hydrogeochemical characterization

The 2026 online offering is scheduled for October 26–30 and November 2–6, 2026, with tuition listed at $1,695 for an individual.

Best if: you're a practicing consultant/remediation engineer and want technology-selection and design knowledge rather than just theory.

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2. University of Illinois — Environmental Remediation & Compliance

This is the option I'd choose if you want something more academically substantial.

It's a 12-credit, fully online graduate certificate combining:

• Treatment technology design
• Fate and cleanup of pollutants
• Hydrogeochemistry
• Bioremediation
• PFAS/emerging contaminants
• Groundwater and soil remediation

The recommended sequence includes Water Quality Engineering, Fate & Cleanup of Pollutants, and Water Chemistry & Bioremediation. The credits can also stack toward Illinois's online master's programs.

Best if: you want to move toward technical leadership, remediation design, or eventually an M.S.

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3. Rutgers — Science & Practical Aspects of In Situ Technologies

This is particularly attractive if you already know the basics and want to get deeper into innovative in-situ treatment.

It covers:

• Bioremediation
• Chemical oxidation
• Thermal treatment — ERH, TCH, SEE
• Zero-valent iron/reducing technologies
• Injection design
• Combining technologies into treatment trains
• Selecting technologies based on contaminant distribution, geology, permeability and redox conditions

Rutgers specifically positions it for professionals who want to stay current on innovative technologies.

Best if: you're already working on contaminated-site projects and want immediately applicable knowledge.

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4. Rice University / Coursera — Natural Attenuation of Groundwater Contaminants

This one is unusually good for a relatively inexpensive, flexible course.

It's an advanced, three-week self-paced course taught by Pedro Alvarez and other remediation experts. It covers MNA, attenuation processes, active remediation versus MNA, and newer approaches to evaluating natural attenuation, with computational exercises.

Best if: groundwater is your focus and you want something you can complete around a full-time job.

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5. EPA / CLU-IN — make this your ongoing resource

For staying current, I'd actually put EPA's CLU-IN resources ahead of many paid courses.

EPA provides online courses, webinars and archived training covering remediation and characterization technologies.

CLU-IN also has a particularly useful remediation technology screening matrix that lets you compare dozens of in-situ and ex-situ technologies based on contaminants, development status, cost and cleanup time.

Best if: you want to continuously track what's actually being deployed, demonstrated and accepted by regulators.

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6. NEMA — targeted courses on emerging technologies

NEMA's live online courses are worth considering when you want to go deep on a specific contaminant or technology rather than take a broad course.

Recent/current offerings include courses on:

• PFAS transport, fate and remediation
• PFAS treatment technologies
• Petroleum remediation
• Chlorinated hydrocarbon remediation
• Metals
• Stormwater treatment

For example, its petroleum remediation course covers SVE, air sparging, MPE, enhanced bioremediation, ISCO, in-situ thermal treatment, liquid activated carbon, phytotechnology and permeable reactive barriers.

The PFAS course goes substantially beyond GAC/ion exchange and discusses technologies such as foam fractionation, electrochemical oxidation, plasma treatment and sonochemical treatment.

Best if: PFAS or another particular contaminant is becoming a major part of your work.

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A particularly good learning path

If I were designing a professional-development path for an environmental engineer in 2026, I'd do:

1. Princeton Groundwater Remediation Course — establish a comprehensive technology/design framework.
2. EPA/CLU-IN webinars and technology resources — stay current on demonstrations, guidance and regulatory acceptance.
3. Rutgers In Situ Technologies — go deeper on injection, bioremediation, ISCO, thermal and treatment trains.
4. Rice/Coursera MNA course — strengthen groundwater conceptual-model and natural-attenuation skills.
5. A specialized PFAS course — particularly worthwhile because PFAS treatment is evolving rapidly.
6. If you want a formal credential, UIUC's Environmental Remediation & Compliance certificate.

One important distinction: "new technology" doesn't necessarily mean "better technology." For remediation work, I'd look for courses that teach you to evaluate technology maturity, contaminant mass distribution, delivery limitations, rebound, secondary impacts, lifecycle cost, regulatory acceptance and treatability data—not just courses that showcase novel technologies.

If you tell me whether your work is primarily groundwater, soil, PFAS, petroleum, chlorinated solvents, or industrial waste, I can narrow this to the 5 courses I'd personally recommend for your specialization, including cost, CEUs/PDHs, time commitment, and how advanced each is.

Best if: groundwater is your focus and you want something you can complete around a full-time job.

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5. EPA / CLU-IN — make this your ongoing resource

For staying current, I'd actually put EPA's CLU-IN resources ahead of many paid courses.

EPA provides online courses, webinars and archived training covering remediation and characterization technologies.

CLU-IN also has a particularly useful remediation technology screening matrix that lets you compare dozens of in-situ and ex-situ technologies based on contaminants, development status, cost and cleanup time.

Best if: you want to continuously track what's actually being deployed, demonstrated and accepted by regulators.

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6. NEMA — targeted courses on emerging technologies

If you're an environmental engineer who already understands the fundamentals and wants to get current on emerging and advanced remediation technologies, I'd prioritize courses that teach technology selection, design, limitations, and case histories, rather than generic environmental-engineering courses.

My top picks

If I were designing your learning path

1. Start with CLU-IN/ESTCP material.
It's particularly valuable because it exposes you to technologies without the marketing bias you'll sometimes encounter in vendor-sponsored training. CLU-IN also has an online ISCO short course with modules on engineering and implementation.

2. Take Princeton Groundwater's course if you want a serious practitioner-level survey.
This would be my #1 choice if your goal is to become better at selecting and designing remedies. It gets into high-resolution site characterization, mass flux, heterogeneity/back diffusion, bioremediation, ISCO/ISCR, thermal remediation, permeable treatment walls, and PFAS—not just descriptions of technologies. The next listed live-online offering is October 26–30 and November 2–6, 2026.

3. Add PFAS specifically.
PFAS is probably the most important emerging-contaminant area to understand right now. The AAEES microcredential is an inexpensive introduction; for more detailed treatment-system design, ASCE's groundwater-treatment course is stronger.

4. Go deeper into in-situ technologies.
Rutgers' course is particularly attractive if your work involves groundwater or source-zone remediation because it gets into the why behind technology selection and implementation—including injection issues and treatment trains.

Technologies I'd make sure your coursework covers

For an engineer wanting to stay ahead of the field, I'd look for exposure to:

• Enhanced bioremediation / bioaugmentation
• ISCO and ISCR
• In-situ thermal remediation — ERH, TCH, SEE
• Permeable reactive barriers and reactive zones
• PFAS treatment — GAC, ion exchange, membranes, destruction technologies
• Electrochemical treatment
• Advanced oxidation/reduction
• High-resolution site characterization — MIP, LIF, HPT, CPT, etc.
• Mass-flux-based remediation
• DNAPL source-zone treatment
• Vapor intrusion mitigation
• Nature-based treatment / monitored natural attenuation
• Technology trains combining multiple remedies

A useful companion to any course is the Federal Remediation Technologies Roundtable's Technology Screening Matrix, which lets you compare technologies by contaminant class, demonstrated effectiveness, development status, availability, and whether they're suited to source treatment or whole-site remediation.

Bottom line: If you want one course, I'd choose Princeton Groundwater. If you want the best value, combine free CLU-IN/ESTCP training + AAEES PFAS + Rutgers in-situ remediation. If you're aiming for a deeper career pivot into remediation, the University of Illinois online certificate is the more substantial credential.

For environmental engineers looking to stay ahead of the curve on cutting-edge site cleanup, contaminant transport, and emerging destructive or containment tech, a mix of specialized university certificate programs, agency-backed virtual training, and targeted professional modules are available.

The most effective online learning pathways and platforms for new remediation technologies are structured below:

Comprehensive University Graduate Certificates

• University of Illinois Urbana-Champaign – Environmental Remediation & Compliance Certificate : A 12-credit, fully online program housed jointly by Civil & Environmental Engineering and the School of Earth, Society & Environment. It provides rigorous technical training in subsurface investigations, pollutant fate and transport, and state/federal cleanup standards.
• Columbia University – Earth and Environmental Engineering Online Certificate : Focuses broadly on sustainable resource management, material processing, and advanced environmental remediation strategies suited for working engineering professionals.

Regulatory and Agency Virtual Training

• US EPA Clean Up Information (CLU-IN) and ERTP Virtual University : The EPA’s Environmental Response Training Program (ERTP) offers exceptional self-paced online modules and virtual courses covering cutting-edge topics like in-situ treatments, phytoremediation, bioremediation, and monitored natural attenuation. It emphasizes technology screening and hands-on remediation limitations based on real Superfund data.
• International Atomic Energy Agency (IAEA) – Fundamentals of Environmental Remediation : A concise, self-paced digital course outlining modern remediation life cycles, strategic planning, and post-remediation monitoring.

Professional Development & Specialized Engineering CEUs

• National Environmental Management Academy (NEMA) Online Courses : Offers specialized interactive online short courses (such as Remediation Principles and Technologies for Soil, Vapor, and Groundwater ) that evaluate dozens of presumptive remedies using Federal Remediation Technologies Roundtable (FRTR) matrices.
• Rutgers Continuing Professional Education (CPE) : Frequently hosts targeted online interactive training on emerging contaminant challenges (like PFAS and chlorinated hydrocarbons) and updated site remediation protocols.
• Coursera – Rice University's Natural Attenuation of Groundwater Contaminants : A targeted massive open online course (MOOC) reviewing innovative biological and physical paradigms for managing recalcitrant groundwater plumes.

Practical Insights

If you'd like to narrow this down, let me know:

• Are you looking for free professional development/CEUs or a formal academic certificate?
• Do you want to focus on a specific media (e.g., groundwater vs. soil/sediment ) or contaminant class (e.g., PFAS, chlorinated solvents, hydrocarbons)?

If your goal is to stay current on emerging remediation technologies—not just relearn basic environmental engineering—I’d prioritize practitioner-oriented courses and technical webinars over generic Coursera/edX environmental courses. The strongest options I found are:

1. EPA Environmental Remediation Technologies — best overall starting point

This is probably the first course I'd take. It's specifically designed around remediation technology selection and covers in-situ treatment, bioremediation, phytoremediation, monitored natural attenuation, soil washing, immobilization, thermal treatment, sediment remediation, containment, water treatment, and process testing. It also emphasizes applicability and limitations rather than simply describing technologies.

Why it's valuable: It gives you the framework to ask, "When should I actually use this technology?"—which is more useful professionally than memorizing technologies.

2. ITRC + EPA CLU-IN — best resource for staying current

This is the one I'd make a continuing education habit rather than a one-time course. CLU-IN has an enormous archive of remediation webinars, including recent ITRC material on PFAS, pump-and-treat optimization, vapor intrusion, hydrocarbons, managed aquifer recharge, and emerging contaminants.

Some particularly relevant 2026 offerings include:

• PFAS Sorption-Based Technologies — activated carbon and ion exchange
• PFAS Chemistry Explained
• Pump & Treat Optimization
• Managed Aquifer Recharge
• Vapor Intrusion Mitigation
• Contaminants of Emerging Concern
• Microplastics
• Introduction to Hydrocarbons

I'd strongly recommend ITRC/CLU-IN over generic online course platforms if your objective is learning what remediation practitioners and regulators are actually doing now.

3. Rutgers — Science & Practical Aspects of In Situ Technologies

This is a particularly good choice if you're interested in groundwater remediation. It covers:

• Bioremediation
• Chemical oxidation
• Chemical reduction
• Zero-valent iron
• Thermal technologies
• Injection design
• Treatment trains
• Technology selection

The course explicitly targets professionals who want to stay current with innovative technologies and provides a framework for evaluating remedial alternatives.

My pick if you already have solid remediation fundamentals: Rutgers.

4. Princeton Groundwater Remediation Course — best deep dive

If you're looking for something substantially more rigorous than a webinar series, this is the standout. The live-online version is 40 hours and covers soil/groundwater remediation, high-resolution 3-D hydrogeochemical characterization, regulations, and practical design of remediation technologies. The currently listed 2026 online course is October 26–November 6, priced at $1,695 for an individual.

I'd consider this if you're moving toward remediation design, technical leadership, or project management rather than just wanting general exposure.

5. AAEES PFAS Microcredential — best focused specialty

PFAS is important enough that I'd consider a dedicated course even if PFAS isn't your primary specialty. AAEES's on-demand microcredential includes four expert-led webinars, quizzes, case studies, and material covering PFAS treatment technologies, risk management, and regulatory issues. It's currently advertised at $99.

6. FRTR — best for seeing where remediation technology is heading

The Federal Remediation Technologies Roundtable is especially useful once you have the fundamentals. For example, its 2026 virtual meeting covered advances in groundwater/surface-water interface characterization and innovative technologies for contaminant migration characterization.

It's less of a conventional "course" and more of a way to expose yourself to research-to-field translation and real federal cleanup projects.

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What I'd recommend for an environmental engineer

If I were building a 6–12 month remediation-technology learning path, I'd do:

Phase 1 — Foundation

1. EPA Environmental Remediation Technologies
2. Review EPA/CLU-IN technology profiles alongside it.

Phase 2 — Modern remediation 3. Rutgers In Situ Technologies 4. ITRC/CLU-IN webinars on:

• PFAS
• Pump-and-treat optimization
• Vapor intrusion
• Bioremediation
• Emerging contaminants

Phase 3 — Specialization 5. Choose one:

• PFAS → AAEES microcredential
• Groundwater/in-situ remediation → Rutgers
• Advanced remediation design → Princeton
• Sustainable remediation/phytoremediation → EPA/CLU-IN material

Phase 4 — Stay current 6. Subscribe to CLU-IN and periodically work through its archive. It has 1,000+ archived webinars, so you can build your own highly targeted curriculum instead of paying for another degree.

One especially good example is EPA's recent phytoremediation training, which covers practical design, contaminant/plant matching, hydrogeology, long-term maintenance, hybrid treatment systems, and actual case studies.

My ranking

For most environmental engineers:

1. 🥇 ITRC/CLU-IN — best ongoing source for new remediation technologies
2. 🥈 EPA Environmental Remediation Technologies — best broad foundation
3. 🥉 Rutgers In Situ Technologies — best for serious groundwater/in-situ work
4. Princeton Groundwater — best intensive professional course
5. AAEES PFAS Microcredential — best inexpensive specialty credential
6. FRTR — excellent supplement for advanced/innovative federal cleanup work

The big advantage of the ITRC/CLU-IN + EPA combination is that you're learning not only how a technology works, but also where it has been demonstrated, what its limitations are, how regulators view it, and what technologies are actually moving into practice.

If you tell me whether your work is more soil/groundwater, PFAS, hazardous waste, brownfields, industrial sites, or wastewater, I can narrow this down to the 5–7 courses I'd personally take and put them in order by ROI, cost, and CEU/PDH value.

For an environmental engineer looking to master new and emerging remediation technologies (such as in-situ PFAS destruction, colloidal activated carbon barriers, high-resolution site characterization, and advanced bioremediation), a blend of academic, regulatory, and industry-led online training is available.

The top-tier online options range from structured graduate certificates to specialized professional development courses:

• University Graduate Certificates
  • University of Illinois (Online): Offers an Engineering Geology & Subsurface Investigations Graduate Certificate Program . It is a 12-credit online program covering contaminant fate, pollutant transport, and modern remediation methods tailored for working environmental professionals.
  • Tufts University: Offers an online-accessible Certificate in Environmental Management featuring specific engineering courses like Site Remediation, Bioremediation (Natural and Enhanced) , and Hazardous Waste Treatment Technologies.
• Regulatory & Government Training Platforms
  • U.S. EPA Superfund Training and Learning Center / CLU-IN: The EPA provides robust online tools, self-paced modules (like the Basics to Superfund program), and specialized technical webinars through the EPA Clean Up Information (CLU-IN) Training Page . These cover cutting-edge technology deployment, groundwater high-resolution site characterization (HRSC), and greener cleanups.
  • International Atomic Energy Agency (IAEA) E-Learning: Offers a concise, self-paced IAEA Course on Fundamentals of Environmental Remediation that covers site assessment and remediation processes.
• Industry & Vendor-Led Technical Training
  • Regenesis Remediation Training: Provides structured, self-paced online technical training modules (complete with case studies and webinars) focusing on advanced in-situ applications. Popular modules cover in-situ treatment of PFAS, chlorinated solvents , and petroleum hydrocarbons via colloidal activated carbon . Access is available via the Regenesis Remediation Training Portal.
• Professional Engineering (PE) Continuing Education & PDH Courses
  • CEDengineering.com: Offers an extensive library of board-accepted Professional Development Hour (PDH) courses specifically for environmental engineers, including modules on In-Situ Treatment of Hazardous Soil, In-Situ Thermal Remediation , and Brownfields Cleanup Options.
  • EPIC Training: Conducts live-online virtual short courses such as Environmental Site Assessment and Remediation and specialized web series on Environmental Bioremediation and emerging decontamination technologies.

To help narrow down the best choice, let me know:

• Are you looking for formal academic credits/certificates or quick PDH credits for license renewal?
• Do you have a specific contaminant in mind (e.g., PFAS, chlorinated solvents, petroleum hydrocarbons)?