REM – Registered Environmental Manager
Short Summary
Registered Environmental Manager (REM)
Credentialing Body: National Registry of Environmental Professionals (NREP)
The Registered Environmental Manager (REM) designation is a premier certification for professionals managing complex environmental, health, and safety (EHS) programs. Designed for experienced practitioners, REM validates advanced expertise in regulatory compliance, environmental science, auditing, and sustainability leadership.
Who Should Pursue REM?
Ideal for environmental managers, EHS directors, compliance officers, and consultants, REM is tailored to those with 5+ years of experience and a background in environmental disciplines. It signals readiness to lead multi-site programs, navigate federal and state regulations, and implement strategic environmental initiatives.
Topics Covered
- Clean Air Act, Clean Water Act, RCRA, CERCLA/SARA
- Environmental Management Systems (ISO 14001)
- Hazardous materials, site assessments, and audits
- Environmental chemistry, toxicology, and hydrology
- Professional ethics, liability, and emergency preparedness
Certification Details
The REM exam includes 150 multiple-choice questions and lasts 2 hours 45 minutes. Candidates may prepare via self-study or an optional online workshop. Total estimated cost ranges from $850 to $1,345, depending on prep options.
Renewal & Recognition
REM must be renewed
Explore how REM can elevate your environmental leadership and open doors to senior-level roles in EHS management.
Some Jobs That Benefit Most
Course Description
🎯 Purpose of the REM Designation
The REM credential, awarded by the National Registry of Environmental Professionals (NREP), is designed to:
- Validate advanced competence in environmental management, especially for professionals overseeing large-scale EHS programs.
- Assure public and employer confidence that the holder can manage regulatory compliance, risk, and sustainability initiatives.
- Support leadership roles in environmental auditing, hazardous materials management, emergency preparedness, and environmental real estate assessment.
It’s not entry-level—candidates typically have:
- A bachelor’s degree in an environmental discipline (or equivalent experience)
- At least five years of direct environmental work experience
📚 Topics Covered in the REM Course & Exam
The REM exam spans 150 multiple-choice questions across six major domains:
- Regulatory Compliance
- Clean Air Act (CAA), Clean Water Act (CWA), RCRA, CERCLA/SARA
- Safe Drinking Water Act, FIFRA, NEPA, OSHA, DOT Hazmat rules
- Pollution Prevention Act, Endangered Species Act, international protocols
- Program & Project Management
- Environmental Management Systems (ISO 14001)
- Health & safety, training, documentation, cost/schedule control
- Risk management and regulatory liaison
- Scientific Knowledge
- Chemistry, toxicology, biology/ecology, geology/hydrology
- Environmental math and modeling
- Audits & Assessments
- Environmental site assessments (ESA)
- Environmental audits and evaluations
- Technology & Tools
- Monitoring and treatment technologies
- Indoor air quality, IT systems for environmental data
- Professional Practices
- Ethics, legal obligations, liability (personal and corporate)
- Emergency communications, insurance, infrastructure preparedness
🧪 Specialization Options
While the REM itself is a generalist credential, NREP offers additional certifications that allow professionals to specialize further:
| Specialization | Credential |
| Environmental Auditing | Certified Environmental Auditor (CEA) |
| Property Assessment | Registered Environmental Property Assessor (REPA) |
| Indoor Air Quality | Certified Indoor Air Quality Manager (CIAQM) |
| Environmental Systems Management | Certified Environmental Systems Manager (CESM) |
| Entry-Level Environmental Practice | Associate Environmental Professional (AEP) |
Cost
Cost Breakdown
💰 REM Certification Cost Breakdown
| Item | Estimated Cost (USD) | Notes |
| Application Fee | $150 | Paid when submitting your application to NREP |
| Exam Fee | $350 | Covers the 150-question certification exam |
| Study Guide (E-Book) | $350 | Recommended prep material from NREP; includes regulatory and technical content |
| Online Workshop (Optional) | ~$495 | Instructor-led prep course (e.g., Nov–Dec 2025 session) |
| Recertification Fee | $150 every 2 years | Required to maintain active status |
📦 Total Estimated Initial Cost
If you pursue the full package including the workshop:
- Without Workshop:
$150 (Application) + $350 (Exam) + $350 (Study Guide) = $850 - With Workshop:
$850 + $495 (Workshop) = $1,345
🔄 Ongoing Costs
- Recertification every 2 years: $150
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Prerequisites
✅ REM Prerequisites
- Education Requirement
- A bachelor’s degree in an environmentally related discipline is expected. This includes:
- Environmental science
- Engineering
- Biology, chemistry, geology
- Environmental health or management
🔁 Substitution Option:
If you don’t have a degree, you can substitute three years of relevant work experience for each year of academic study.
- Example: 12 years of experience = equivalent to a 4-year degree
- Work Experience Requirement
- Minimum of five years of direct experience in:
- Environmental engineering
- Environmental health and safety (EHS)
- Environmental science or management
📌 Important Note:
Education cannot be substituted for the required five years of work experience. Even if you use experience to replace a degree, you still need five additional years of environmental work.
- Exam Requirement
- You must pass the REM certification exam, which includes 150 multiple-choice questions across six domains (regulatory, scientific, auditing, etc.).
Renewal Requirements
- Renewal Frequency
- Every 1 year, according to O*NET OnLine’s certification listing
- Continuing Education
- Renewal is completed through Continuing Education Units (CEUs).
- You must demonstrate ongoing professional development in environmental management topics.
- Re-examination is not required.
- Renewal Fee
- The recertification fee is $150, payable to the National Registry of Environmental Professionals (NREP).
📋 Summary Table
| Requirement | Details |
| Renewal Interval | Every 1 year |
| Renewal Method | Continuing Education Units (CEUs) |
| Re-exam Required? | No |
| Renewal Fee | $150 |
| CEU Documentation | Must be submitted to NREP for approval |
designation
Average Time to Complete Course
The REM – Registered Environmental Manager designation does not require a fixed-length course to complete. Instead, it’s structured around self-paced preparation followed by a certification exam. Here’s how the timeline typically plays out:
⏳ Typical Completion Timeline
| Component | Estimated Time | Details |
| Application & Approval | 1–2 weeks | Submit credentials and experience to NREP |
| Self-Study (E-Book) | 4–8 weeks (flexible) | Depends on your familiarity with environmental regulations and systems |
| Online Workshop (Optional) | ~6 weeks | Instructor-led sessions (e.g., Nov 3–Dec 14, 2025) |
| Exam Scheduling | Flexible | You choose your exam date once approved |
| Exam Duration | 2 hours 45 minutes | 150 multiple-choice questions |
🧮 Total Time to Completion
- Fast-track (experienced professionals): ~4–6 weeks
- Standard pace with workshop: ~8–10 weeks
Exams
📝 REM Exam Details
| Aspect | Details |
| Administered By | National Registry of Environmental Professionals (NREP) |
| Format | Computer-Based Test (CBT) or Paper-Pencil |
| Question Type | 150 Multiple-Choice Questions |
| Duration | 2 hours 45 minutes |
| Passing Score | Not publicly disclosed (NREP evaluates overall performance) |
| Exam Fee | $350 |
📚 Exam Content Areas
The exam spans six major domains:
- Regulatory Compliance
- Clean Air Act (CAA), Clean Water Act (CWA), RCRA, CERCLA/SARA
- Safe Drinking Water Act, FIFRA, NEPA, OSHA, DOT Hazmat rules
- Pollution Prevention Act, Endangered Species Act, international protocols
- Program & Project Management
- Environmental Management Systems (ISO 14001)
- Health & safety, training, documentation, cost/schedule control
- Risk management and regulatory liaison
- Scientific Knowledge
- Chemistry, toxicology, biology/ecology, geology/hydrology
- Environmental math and modeling
- Audits & Assessments
- Environmental site assessments (ESA)
- Environmental audits and evaluations
- Technology & Tools
- Monitoring and treatment technologies
- Indoor air quality, IT systems for environmental data
- Professional Practices
- Ethics, legal obligations, liability (personal and corporate)
- Emergency communications, insurance, infrastructure preparedness
Designation Provider
The certifying body for the REM – Registered Environmental Manager designation is the:
🏛️ National Registry of Environmental Professionals (NREP)
- Website: nrep.org
- Headquarters: Glenview, Illinois, USA
- Founded: 1987
- Mission: To promote legal and professional recognition of environmental professionals through certification and registry
NREP is one of the oldest and most recognized certifying organizations in the environmental field, offering a range of credentials including:
- REM (Registered Environmental Manager)
- CEA (Certified Environmental Auditor)
- REPA (Registered Environmental Property Assessor)
- CESM (Certified Environmental Systems Manager)
- CIAQM (Certified Indoor Air Quality Manager)
