Licensing Guides
Maryland Septic License: How to Become a Septic Contractor in Maryland
Septic, MD
September 21st, 2026
Table of Contents
What Is the Mean Wage for a Septic Professional in Maryland?
What Are the Reciprocity Requirements for a Septic License in Maryland?
What Are the Penalties for Unlicensed Septic Work in Maryland?
Septic License Requirements in Maryland
Learning a trade requires hard work and determination. You can't rush the process, but the time you put into learning how to become a septic professional can lead to a career that is long-lasting, lucrative, and fulfilling.
In Maryland, there are approximately 450,000 septic systems, according to the Maryland Department of the Environment (MDE). That means strong, steady demand for licensed professionals who can install, maintain, and inspect these systems.
There are 30,650 septic workers nationwide, and Maryland employs 160 of them, according to the Bureau of Labor Statistics (BLS). The BLS projects 8% national growth by 2032, adding 3,000 skilled workers to the ranks. In Maryland, according to CareerOneStop, the U.S. Department of Labor's job search website, the projected growth rate is 6% for septic tank servicers and sewer pipe cleaners.
If you're thinking about starting a septic business or working in the field, you need to know the requirements in your state or local jurisdiction. This guide will help you determine what you need before you get started in the state of Maryland.
Types of Septic Licenses in Maryland
The Maryland Department of the Environment State Board of On-Site Wastewater Professionals requires all septic workers to obtain an On-Site Wastewater Services license.
According to the board, an on-site wastewater service is any activity associated with the design, installation, operation and maintenance, pumping, repair, or property transfer inspection of an on-site wastewater disposal system.
The license covers activities, including:
Perc tests
Septic inspections
New septic system installation and design
Site evaluations and site plans
Maryland also offers additional certifications for onsite wastewater professionals, including:
Sand mound systems
At-grade systems
BAT (best available technology) systems
These certifications require completing a daylong training course and renewal every five years.
Here is a summary of the key attributes for each license and certification level:
License/Certification | Scope of Work | Experience Required | Exam Required | Renewal |
|---|---|---|---|---|
On-Site Wastewater Services Registration | Design, installation, O&M, pumping, repair, property transfer inspections | None | No | Every two years ($150) |
Property Transfer Inspector (PTI) License | Inspections of septic systems for property sales | MDE-approved training course | No (course completion required) | Every two years ($150) |
Sand Mound Certification | Installation of sand mound septic systems | Daylong training course | No | Every five years |
At-Grade Certification | Installation of at-grade septic systems | Daylong training course | No | Every five years |
BAT Certification | Installation of best available technology nitrogen-removal systems | Daylong training course | No | Every five years |
Steps to Get a Septic License in Maryland
Complete the license application.
List any existing licenses or certifications (this is optional).
Pay the Bay Restoration Fund (an annual payment to support the protection of water quality in the Chesapeake Bay and safeguard environmental health. The fee varies by county).
Pay the $150 license fee.
Direct any questions about the license process to OWWP.Board@maryland.gov. You can find more information on the Maryland State Department of the Environment website, including an FAQ section and details about the permit process.
Benefits of Getting a Septic License in Maryland
Earning your septic license in Maryland provides several professional and financial advantages:
Legal compliance: Maryland law requires any individual providing on-site wastewater services to register with the Board of On-Site Wastewater Professionals. Working without registration can result in penalties and loss of business opportunities.
Higher earning potential: Licensed septic professionals in Maryland earn a mean annual wage of $56,000, as compared to the national mean of $53,500 for this occupation.
Growing demand: With approximately 450,000 septic systems in Maryland, according to the Maryland Department of the Environment, there is steady demand for licensed professionals to install, maintain, and inspect these systems.
Professional credibility: Registration demonstrates your qualifications to homeowners, contractors, and county health departments that reference the state's list of registered professionals when verifying compliance.
Expanded service offerings: With additional certifications in sand mound, at-grade, and BAT systems, you can take on specialized projects that command higher fees.
What Is the Mean Wage for a Septic Professional in Maryland?
According to the Bureau of Labor Statistics, septic tank servicers and sewer pipe cleaners in Maryland earn a mean annual wage of $56,000, or $27.12 per hour. This slightly exceeds the national mean annual wage of $53,500 ($25.72 per hour) for the same occupation.
Maryland's higher-than-average wages reflect the state's strong demand for septic professionals, driven by the large number of onsite systems and ongoing Bay Restoration Fund upgrade programs across the state's counties.
How Much Does It Cost to Get a Septic License in Maryland?
The license fee for a Maryland septic license is $150. The Bay Restoration Fund payment varies by county.
Here is a breakdown of costs associated with becoming a licensed septic professional in Maryland:
Registration/license fee: $150 for a two-year registration with the Board of On-Site Wastewater Professionals
Property Transfer Inspector (PTI) license: $150 (fulfills the general registration requirement. You pay only one $150 fee per renewal period.)
Additional certification courses: The Maryland Onsite Wastewater Professionals Association (MOWPA) offers daylong training courses for sand mound, at-grade, and BAT system certifications. Contact MOWPA directly for current course pricing and schedules.
Bay Restoration Fund fee: $60 per year per household on a septic system. The county collects this fee from homeowners, not contractors, but contractors should know about it when advising clients.
Insurance and bonding: Costs vary. Contractors need general liability insurance and may need additional coverage depending on the county where they work.
What Business Owners Need to Know
Getting the most out of a septic installation technician, no matter where they are in their licensing journey, takes work. ServiceTitan cloud-based, all-in-one septic business software gives technicians and business owners the technology they need to do the work efficiently, and the data they need to do it smartly.
SMS communications that keep customers informed about the technician's visit.
Location-specific service history, including recorded calls, accessible from the mobile app.
Required forms that ensure every job is done right, driving consistency.
The ability to build multi-option proposals with photos, on-site, in minutes.
Sales presentations that make conversations with customers easier and drive the average ticket.
Mobile payment acceptance, eliminating lost checks and increasing cash flow.
To learn more, schedule a demo with a product expert today.
How to Get a Septic License in Maryland
In 2022, the Maryland General Assembly created the Board of On-Site Wastewater Professionals under Title 9, Subtitle 11A of the Environment Article. The Board manages Maryland's licensing process for septic professionals.
As of December 31, 2022, any individual who provides on-site wastewater services in Maryland must register with the Board. The registration process is straightforward:
Download and complete the registration application form.
Submit the completed application with the $150 registration fee to the Maryland Department of the Environment.
Once the Board approves your application, your name will appear on the state's list of registered on-site wastewater professionals, which local permitting authorities reference for compliance.
If you plan to conduct property transfer inspections, you must also obtain a separate Property Transfer Inspector (PTI) license, which requires completing a Department-approved training course. The PTI license fulfills the general registration requirement.
Additionally, check with the county health department where you plan to work, as some counties mandate additional local permits or requirements.
How Long Does It Take to Get a Septic License in Maryland?
The process to obtain a Maryland septic license is quick, as there are no work experience or examination requirements. To obtain one of the additional septic certifications, you need to take a one-day course.
Maryland Septic Training Programs and Schools
The Maryland Onsite Wastewater Professionals Association offers several training courses to prepare you for a career as a septic worker. While these courses are not required, they provide the fundamentals of onsite wastewater systems and help you gain valuable knowledge and experience. Courses cover a variety of topics, including septic system installation, site evaluations, inspections, and more.
Maryland Septic Licensing Exam Details
Maryland doesn't require you to complete an examination to obtain a septic license.
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How Can I Prepare for the Septic License Exam in Maryland?
Maryland does not require a licensing exam for general septic registration. However, if you plan to perform property transfer inspections, you must complete an MDE-approved training course.
Even without an exam requirement, training courses can deepen your expertise. The Maryland Onsite Wastewater Professionals Association (MOWPA) offers several courses that cover septic system installation, site evaluations, inspections, and operations and maintenance. These courses can help you prepare for the additional certifications in sand mound, at-grade, and BAT systems offered by the Maryland Department of the Environment.
Who Issues Septic Licenses in Maryland?
In Maryland, the Department of the Environment handles licensing for professionals who work with onsite wastewater systems in any capacity. Some counties also mandate additional requirements. Make sure to check regulations from the county health department where you plan to work.
Additionally, septic contractors must complete the Well and Septic system permit application from the Maryland Department of Health and also complete a percolation test prior to the construction, replacement, repair, or upgrade of a septic system.
To protect groundwater, the Code of Maryland Regulations (COMAR) also requires septic workers to meet certain conditions if they perform sewage disposal, wastewater treatment, and more.
Does My Maryland Septic License Work in Any Other State?
No, your Maryland septic license does not transfer to other states. Maryland's on-site wastewater registration is state-specific. The Board of On-Site Wastewater Professionals administers it. If you want to work in another state, you will need to meet that state's individual licensing requirements.
What Are the Reciprocity Requirements for a Septic License in Maryland?
No, Maryland doesn't offer license reciprocity with other states.
Maryland does not offer full, partial, or conditional reciprocity for septic licenses from other states. If you hold a septic license in another state and want to work in Maryland, you must register with the Board of On-Site Wastewater Professionals by submitting a new application and paying the $150 registration fee. You may list your out-of-state experience on your application, but that does not exempt you from Maryland's registration process.
Septic-Specific Requirements
Maryland has several requirements specific to the septic industry that licensed professionals should be aware of:
Bay Restoration Fund compliance: The Bay Restoration Fund (BRF) requires Best Available Technology (BAT) for nitrogen removal on all new and replacement septic systems in the Chesapeake Bay Critical Area. MDE must certify contractors before they can install BAT units on these systems.
COMAR regulations: The Code of Maryland Regulations (COMAR 26.04.02 through 26.04.05) governs onsite sewage disposal systems, subdivision of land, well construction, and shared facilities. All septic professionals must comply with these regulations.
Percolation testing: Contractors must complete a percolation (perc) test through the county health department prior to any construction, replacement, repair, or upgrade of a septic system.
County health department permits: In addition to state registration, contractors must obtain permits from the local county health department where they plan to perform the work.
National Septic Certifications
Other certifications can help you demonstrate your proficiency to potential employers and clients. The National Association of Wastewater Technicians and the National Onsite Wastewater Recycling Association offer certifications. Those and other professional certifications are not required but can add to your marketability and therefore increase your opportunity to make more money.
Other Requirements Unique to Maryland
Maryland has several unique requirements that septic professionals should keep in mind:
County-level oversight: While the state handles registration through MDE, individual counties may have additional permit requirements, fee structures, and inspection protocols. Always check with the county health department where you plan to work.
Chesapeake Bay Critical Area rules: Properties within 1,000 feet of the high water line of tidal waters of the Chesapeake Bay require nitrogen-reducing BAT systems. Septic professionals working in these areas must hold BAT certification from MDE.
Septic stewardship plans: Some Maryland counties have adopted septic stewardship plans that require homeowners to pump out and inspect septic systems at least once every five years.
Well and Septic system permits: Contractors must complete the Well and Septic system permit application from the Maryland Department of Health prior to construction, replacement, repair, or upgrade of a septic system.
Are There Septic Scholarships in Maryland?
While there are no scholarships specifically for septic professionals in Maryland, several resources can help offset training costs:
The Bay Restoration Fund provides grants to counties that administer septic system upgrade programs, which can create job opportunities and subsidized training for contractors working on BAT installations.
The Maryland Onsite Wastewater Professionals Association (MOWPA) may offer member discounts on training courses.
The National Association of Wastewater Technicians (NAWT) and the National Onsite Wastewater Recycling Association (NOWRA) offer professional development resources and may have scholarship or grant opportunities for members.
SERCAP (Southeast Rural Community Assistance Project) offers individual household well and septic loans to eligible low-to-moderate income homeowners in rural communities, which can create work for licensed contractors.
How Can Someone Verify My Septic License in Maryland?
Customers, contractors, and county health departments can verify your Maryland septic registration through the Board of On-Site Wastewater Professionals website. The Maryland Department of the Environment maintains a public list of individuals registered to perform on-site wastewater disposal services.
For property transfer inspectors, MDE also publishes a separate list of individuals licensed to conduct property transfer inspections. Local permitting authorities reference these lists to verify compliance before issuing permits.
When Can a Septic License Get Suspended in Maryland?
The Board of On-Site Wastewater Professionals has the authority to suspend or revoke a septic license in Maryland. Grounds for suspension or revocation may include:
Failing to follow COMAR regulations (26.04.02 through 26.04.05) governing onsite sewage disposal systems
Performing work outside the scope of your registration or certification
Failing to maintain required records, including property transfer inspection records (which you must retain for five years)
Failing to use the standard inspection form provided by MDE for property transfer inspections
Failing to renew your registration within the required two-year cycle
If the Board suspends your license, contact them at OWWP.Board@maryland.gov for information about reinstatement.
This content is for informational purposes only and does not constitute legal advice. Consult a licensed attorney for guidance specific to your situation.
What Are the Penalties for Unlicensed Septic Work in Maryland?
As of December 31, 2022, Maryland law requires any individual providing on-site wastewater services to register with the Board of On-Site Wastewater Professionals. Performing septic work without proper registration is a violation of Title 9, Subtitle 11A of the Maryland Environment Article.
Consequences of unlicensed work may include:
County health departments deny permits, referencing the state's list of registered professionals to verify compliance.
The Maryland Department of the Environment takes enforcement action.
Local agencies block you from obtaining or renewing business licenses.
The state imposes civil penalties under Maryland environmental law.
To avoid penalties, ensure your registration is current and that you hold any additional certifications required for the specific type of work you perform.
This content is for informational purposes only and does not constitute legal advice. Consult a licensed attorney for guidance specific to your situation.
Continuing Education
You must renew your Maryland septic license every two years. The renewal fee is $150.
General registration renewal does not require continuing education courses, but you can earn continuing education credits and improve your knowledge by taking a course from the Maryland Onsite Wastewater Professionals Association.
If you hold additional certifications for sand mound, at-grade, or BAT systems, you must renew those certifications every five years, which may require completing a refresher training course through MDE-approved programs.
The MOWPA course catalog includes classes on operations and maintenance, property transfer inspections, and BAT system installation that can help you stay current with industry best practices and regulatory changes.
Resources
You can stay up to date on all septic industry news several ways:
Check top septic blogs, including ServiceTitan®'s blog.
Read about the latest industry trends, and discover ideas on how to grow your septic business.
Listen to top septic podcasts like ServiceTitan®'s "Toolbox for the Trades" podcast.
The states have licensing requirements for other trades, too. You can find out more about how to get an HVAC, Plumbing, Electrical, or General Contractor license in Maryland, or in any of the other 49 states and the District of Columbia through the ServiceTitan® Licensing Hub.
