- What You're Actually Studying For
- Confirm Eligibility Before You Study
- Exam Mechanics: Fees, Format and Rules
- The Four Competency Categories
- Working Through the 26 Job Functions
- U.S. vs. Canadian Edition: Pick Your Source
- A Domain-Ordered Study Sequence
- Where First-Time Candidates Slip
- After You Pass: Renewal and Career Use
- Frequently Asked Questions
- The exam is online via Captus, lasts at most three hours, and requires 70% to pass.
- Fees are USD 250 for SWANA members or USD 400 for nonmembers; retakes cost the full fee each time.
- SWANA's Body of Knowledge lists 26 job functions; use the edition matching your jurisdiction (U.S. or Canadian).
- No course is required, and the three-hour exam cannot be paused and resumed.
What You're Actually Studying For
The Manager of Landfill Operations (MOLO) credential is issued by the Solid Waste Association of North America (SWANA). It is aimed at people who run landfills day to day: supervisors, operations managers, and site managers who carry direct responsibility for how waste is received, placed, covered, monitored, and documented. If you need a primer on the credential itself before you commit to preparing, start with What Is MOLO Certification? and then return here.
This guide is built around one idea: the exam tests job competence, so your preparation should mirror the job. SWANA publishes a Body of Knowledge (BoK) for the credential, and that document is the closest thing to an official syllabus. It is a 54-page scope document organized around 26 job functions. Everything in this guide points back to it.
Confirm Eligibility Before You Study
Application approval comes before you get access to the exam, so settle eligibility early. SWANA's national pathways combine experience in municipal solid waste management with education:
| Education Level | Municipal Solid Waste Management Experience |
|---|---|
| High school diploma or GED | Five years |
| Relevant two-year degree | Four years |
| Relevant four-year bachelor's degree | Three years |
Every route also requires at least two years of discipline-related management or supervisory experience and direct responsibility for daily operations. That management requirement is not automatically added on top of the experience total, so read the wording on your application carefully. For a full walk-through of how to document your history, see MOLO Requirements: Eligibility, Prerequisites & How to Qualify.
Exam Mechanics: Fees, Format and Rules
Knowing the logistics removes avoidable stress on test day. Here is what SWANA's national sources establish:
| Item | What the Sources Say |
|---|---|
| Delivery | Online testing through Captus |
| Fee | USD 250 (members) or USD 400 (nonmembers); membership and training are separate |
| Access | Application approval comes first |
| Scheduling window | Exam must be taken within six months of purchase |
| Time limit | Maximum of three hours; cannot be paused and resumed |
| Passing score | 70% |
| Results | Emailed within 24 hours |
| Retakes | Immediate retakes permitted, no numerical attempt limit, full fee each time |
Two things are deliberately left open here because the national sources do not settle them. First, the universal question count: one Canadian chapter's published application form describes MOLO as 150 multiple-choice questions delivered online, but that is chapter-level evidence in a Canadian context, not national confirmation for both editions. Second, SWANA's online testing conduct policy prohibits outside assistance, mobile devices, and study aids unless expressly allowed, so do not assume calculators, formula sheets, or open-book use. Check your exam instructions directly.
Because the three-hour clock cannot be paused, treat the sitting like an endurance task. Arrange a quiet space, a stable connection, and no interruptions. For cost planning beyond the exam fee, see MOLO Certification Cost: Complete Pricing Breakdown, and for scheduling specifics see MOLO Exam Dates: Testing Windows, Deadlines & Scheduling. The score threshold is covered in MOLO Passing Score: Exactly What You Need to Pass.
The Four Competency Categories
SWANA's preparation material groups the knowledge a landfill manager needs into four headings. The labels below are the ones used for this credential; they are categories, not scored sections with published weights. For a deeper treatment, see MOLO Exam Domains: Complete Guide to All 4 Content Areas.
Domain 1: Foundational
The bedrock a landfill manager works from every day: the rules you operate under, the safety culture you maintain, and the basic financial and asset picture of the site.
- Regulations and permitting: understand how permit conditions translate into daily operating obligations
- Safety programs, hazards, and incident prevention at an active working face
- General landfill knowledge: terminology, site components, and how the pieces interrelate
Domain 2: Strategic
Thinking beyond today's shift: planning airspace use, preparing for disruptions, and sustaining performance over time.
- Planning and phased development of disposal areas
- Disaster and contingency preparedness (weather events, fires, equipment loss)
- Continuous improvement and the finance behind operating decisions
Domain 3: Technical
The hands-on science and engineering of running a compliant site. This is where operational detail lives.
- Waste placement, compaction, and cell operations
- Daily, intermediate, and final cover
- Leachate management, landfill gas, groundwater and stormwater controls
- Scales, infrastructure, and closed-landfill considerations
Domain 4: Management
Leading people and relationships: crews, regulators, neighbors, and your own professional growth.
- Staffing, supervision, and operational training of equipment operators
- Communication with stakeholders and the public
- Leadership and professional development
The job-function groupings above are an organizing aid. SWANA does not publish an official mapping that assigns each of the 26 functions to one heading, so use this as a study scaffold rather than a claim about how questions are tagged.
Working Through the 26 Job Functions
The BoK lists 26 job functions, and the list is your master checklist. Across both editions they cover: general knowledge; regulation and permitting; safety; finance; equipment and assets; planning; disaster contingencies; improvement; operational training; phase development; scales; waste and cell operations; cover; restricted materials; ancillary activities; leachate; gas; environmental controls; groundwater; stormwater; infrastructure; closed landfills; communication; staffing; leadership; and professional development.
Turn the list into a self-audit
Print the job-function list and rate yourself on each from honest experience. Most working managers discover a lopsided profile: strong on cell operations and cover because they do it daily, weak on finance, long-range planning, or environmental monitoring because someone else handles it. The exam does not care which parts of the job you personally touch. If you are a veteran of the working face, expect your gaps to cluster in the office-side functions.
Who is likely to be weak where
- Operations-track managers: finance, planning, phase development, and communication.
- Engineering- or compliance-track managers: equipment and assets, operational training, and the practical realities of cover and waste placement.
- Newer supervisors: leadership, staffing, and disaster contingencies, which draw on judgment built over years.
Key Takeaway
Rank all 26 job functions from strongest to weakest before you open a single study aid, then spend your first study hours on the bottom third. Reviewing what you already do well feels productive but moves your score the least.
U.S. vs. Canadian Edition: Pick Your Source
SWANA publishes separate Body of Knowledge documents and separate exams for the U.S. and Canada. They share the 26-function structure but are not interchangeable. The U.S. BoK is internally dated September 2021, and the Canadian BoK is internally dated February 2022. Do not blend jurisdiction-specific requirements: a regulation, threshold, or term from the wrong country can lead you astray.
The clearest example is Job Function 14. In the U.S. edition it is titled Prohibited and Restricted Waste Materials Management. In the Canadian edition it is titled Hazardous and Non-Hazardous Materials Management. The framing, vocabulary, and regulatory context differ, so study the version that matches the exam you registered for.
| Step | Action |
|---|---|
| 1 | Register for the U.S. or Canadian exam through SWANA |
| 2 | Download only the matching Body of Knowledge from SWANA |
| 3 | Use jurisdiction-appropriate regulations when studying permitting and environmental controls |
| 4 | Treat third-party material skeptically unless it identifies which edition it follows |
A Domain-Ordered Study Sequence
You can compress or stretch this to fit your schedule. The logic is what matters: build the regulatory and safety foundation first, then layer technical depth, then close with the judgment-heavy strategic and management material. Adjust the week count to your experience and available time.
Foundational: rules, safety, money
- Read the full BoK once, start to finish, without taking notes
- Work through regulation and permitting, safety, general knowledge, finance, and equipment/assets
- Complete the 26-function self-audit
Technical: the longest block
- Waste and cell operations, cover, and scales
- Leachate, landfill gas, environmental controls, groundwater, and stormwater
- Restricted/hazardous materials (use your edition's Job Function 14 wording), infrastructure, and closed landfills
Strategic: planning and resilience
- Planning and phase development
- Disaster contingencies and continuous improvement
- Ancillary activities
Management: people and communication
- Staffing, operational training, and leadership
- Communication and professional development
Full-length simulation and gap repair
- Take timed practice sets in a single three-hour sitting to rehearse the no-pause rule
- Return to your weakest functions and re-read the relevant BoK sections
The technical block gets the most time because it contains the largest cluster of job functions, but remember that the headings are unweighted. If you have decades in leachate and gas systems, shift those hours to planning or finance. Spaced review works well here: revisit each completed domain briefly every week so early material does not fade while you tackle later blocks.
Use the MOLO practice tests to check retention as you finish each block, and keep a running list of every missed question mapped to its job function. Patterns in that list tell you more than any overall percentage will. A one-page recap such as the MOLO Cheat Sheet is handy for the final days, but only as a recall aid after you have done the underlying reading.
Where First-Time Candidates Slip
Studying like a technician instead of a manager
The credential is for managers. Questions on operations are likely to ask what a responsible manager should decide or prioritize, not just how a task is performed. When you study cover, leachate, or gas, ask yourself what documentation, monitoring, escalation, and communication a manager owns around that task.
Using the wrong jurisdiction's rules
Mixing U.S. and Canadian regulatory assumptions is an easy and avoidable error, especially in permitting, restricted-materials handling, and environmental monitoring. Anchor every regulatory fact to your edition's BoK.
Underestimating the office-side functions
Finance, planning, staffing, and communication feel softer than compaction and cover, but they account for a meaningful share of the 26 functions. Candidates who skip them because "that's not what I do all day" give away points.
Ignoring stamina
With a three-hour limit and no pausing, pacing is a skill. Practice at test length at least once, and decide in advance how you will handle a hard question: flag it, move on, return if time allows.
Trusting unofficial numbers
You will see claims online about pass rates and difficulty. SWANA has not published an aggregate candidate pass rate in the sources reviewed, so treat precise figures with caution. For an honest discussion, read MOLO Pass Rate: What the Data Shows and How Hard Is the MOLO Exam?.
After You Pass: Renewal and Career Use
MOLO certification is valid for three years. To renew, you need 30 relevant Professional Development Hours (PDHs), a renewal application, and the USD 250 per-discipline fee, all before your credential expires. PDHs replaced SWANA's older CEU terminology, so look for "PDH" in current guidance. Membership is separate from the renewal fee. If a credential lapses, you must retake and pass the exam, so put the expiry date on your calendar as soon as you pass.
Because there is no numerical limit on retakes and each attempt costs the full fee, a failed first attempt is recoverable but expensive. That is the practical case for thorough preparation. The credential is relevant to people who hold or want operations-management roles at municipal and private landfills; see MOLO Jobs for the kinds of positions it supports, and weigh the investment using Is the MOLO Certification Worth It? and MOLO Salary Guide.
Frequently Asked Questions
SWANA does not prescribe a study duration. The eight-week sequence above is a reasonable template for a working manager, but adjust to your own gaps. Experienced operators with strong regulatory and financial knowledge may need less; those new to office-side functions may need more.
According to SWANA's current national FAQ, no course is required. Some chapter-hosted training materials state otherwise, but the national FAQ governs. SWANA also cautions that course attendance alone does not cover everything needed for certification.
A 70% score is required to pass. Results are emailed within 24 hours of completing the online exam.
Yes. SWANA permits immediate retakes with no numerical attempt limit, but each attempt requires paying the full exam fee again: USD 250 for members or USD 400 for nonmembers.
No. SWANA offers separate U.S. and Canadian exams with separate Body of Knowledge documents. Both share the 26-job-function structure, but details such as Job Function 14's title and scope differ, so study the edition that matches your registration.
Preparing for MOLO is largely a matter of mapping your real experience against SWANA's 26 job functions, closing the gaps honestly, and rehearsing the three-hour format. Pair that discipline with the official Body of Knowledge and targeted practice questions, and you give yourself the best realistic chance of passing on the first attempt.