Licensing Guides
Rhode Island Septic License: How to Become a Septic Contractor in Rhode Island
Septic, RI
October 1st, 2026
Table of Contents
What Is the Mean Wage for a Septic Professional in Rhode Island?
How Much Does It Cost to Get a Septic License in Rhode Island?
How Long Does it Take to Get a Septic License in Rhode Island?
How Can I Prepare for the Septic License Exam in Rhode Island?
Does My Rhode Island Septic License Work in Any Other State?
What Are the Reciprocity Requirements for a Septic License in Rhode Island?
What Are the Penalties for Unlicensed Septic Work in Rhode Island?
Septic License Requirements in Rhode Island
We all need safe, reliable sewage management for our homes and businesses. Those homeowners and property owners that rely on septic tanks, also known as on-site sewage facilities (OSSF), depend on people who know how to install and maintain those systems while protecting public health and the water supply.
The State of Rhode Island Department of Environmental Management (RIDEM) reports over 35% of homes and businesses in Rhode Island are served by on-site wastewater treatment systems (OWTS).
According to the Bureau of Labor Statistics (BLS), there are 30,650 septic tank servicers and sewer pipe cleaners nationwide. Employment is projected to grow 8% from 2024 to 2034 nationally, with about 2,900 job openings projected each year. There is no separate projected growth rate listed for Rhode Island.
Demand for skilled trades in Rhode Island remains strong. Construction employment in the state totaled 22,400 workers in July 2025, up 10% from pre-pandemic levels, according to the Associated General Contractors of America. If you get the training you need, you should have steady work to choose from when you're ready.
Is a license required to work as a septic (OWTS) professional in Rhode Island? Yes. Under Rhode Island General Laws § 5-56-1, it is unlawful to install, construct, alter, or repair an individual sewage disposal system without a valid license issued by the Director of the Department of Environmental Management. The one narrow exception is an owner-occupant installing a system for their own primary residence, with written RIDEM permission and approved plans. Rhode Island licenses OWTS professionals at five levels — Installer, Class I Designer, Class II Designer, Class III Designer, and Class IV Soil Evaluator — and licensure is statewide, though municipalities may add their own wastewater management rules.
If you're thinking about starting a septic business or working in this 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 Rhode Island.
Types of Septic Licenses in Rhode Island
License categories include:
Installer: Required to install, construct, alter, or repair an OWTS.
Class I Designer: Required for the design of a repair to an OWTS.
Class II Designer: Required for the design of an OWTS repair, a system for a building renovation (if it meets certain conditions), or a new building with wastewater flow under 900 gallons per day (as long as no special exceptions are needed).
Class III Designer: Authorizes the design of any OWTS.
Class IV Soil Evaluator: Required to perform soil evaluations.
An exam is required for the Installer, Class I Designer, Class II Designer, and Class IV Soil Evaluator licenses. A Class III Designer license does not require an OWTS exam but is limited to applicants who are currently licensed Professional Engineers in civil or environmental engineering. Class I Designer applicants must first hold an Installer license, and Class II Designer applicants must be registered Professional Land Surveyors, so the designer classes build on prerequisite credentials rather than on one another.
Steps to Get a Septic License in Rhode Island
To obtain an Installer license, follow these steps:
Submit an Installer application and application fee to Rhode Island Department of Environmental Management Office of Water Resources at 235 Promenade Street, Providence, RI. Confirm the current fee through the RIDEM Office of Water Resources portal.
Optional: Attend a two-day information and examination preparation course offered by the New England Onsite Wastewater Training Program (NEOWTP).
Pass exam.
To obtain a Class I or Class II Designer license, follow these steps:
Meet prerequisite requirement: For Class I, must hold Installer license. For Class II, registration as a Professional Land Surveyor with the Rhode Island State Board of Registration for Professional Land Surveyors is required to apply.
Submit application with $50 fee.
Pass exam.
To obtain a Class III Designer license, follow these steps:
Meet prerequisite requirement: Must be a Professional Civil or Environmental Engineer.
Submit application with $150 fee.
To obtain a Class IV Soil Evaluator license, follow these steps:
Meet one of the following prerequisite requirements:Registration as a Professional Soil Scientist by The Society of Soil Scientists of Southern New England or The American Registry of Certified Professionals in Agronomy, Crops and Soils.Four years professional experience in soil studies for OWTS design in Rhode Island or in soil classification, mapping, interpretation or a combination thereof; and successful completion of nine semester hours in soil science from an accredited college or university.Four years professional experience in soil studies for OWTS design in Rhode Island or in soil classification, mapping, interpretation or a combination thereof; and a bachelor's degree or graduate degree from an accredited college or university in soil science, geology, engineering or similar discipline; and successful completion of nine semester hours in soil science from an accredited college or university.
Submit the Class IV application with the required fee.
Pass written and field exams.
Benefits of Getting a Septic License in Rhode Island
There are several benefits to earning a Rhode Island OWTS license:
It is required by law. Under Rhode Island General Laws § 5-56-1, you cannot legally install, alter, or repair an onsite system without one.
A license is proof of your experience and skill.
It lets you operate a business, pull OWTS permits, and pass inspections.
It qualifies you to bid on a wider range of residential and commercial work.
It protects your customers and your business.
It can increase your earning potential.
What Is the Mean Wage for a Septic Professional in Rhode Island?
The U.S. Bureau of Labor Statistics does not publish separate wage estimates for septic tank servicers and sewer pipe cleaners in Rhode Island, so the national figures are the best guide. Nationally, the mean annual wage for these workers is $53,500, according to the BLS. The national median wage is $49,880, meaning half of these workers earn more and half earn less. Pay ranges from about $37,040 at the 10th percentile to $73,490 at the 90th percentile.
Here is the difference between the two figures often used to describe pay:
Mean wage is the mathematical average.
Median wage is the point at which half of workers earn more and half earn less, and it is usually a better indicator of what most people actually earn.
Earnings vary with experience, certifications, the city where you work, and whether you own the business.
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 Much Does It Cost to Get a Septic License in Rhode Island?
There are application fees for each license:
Installer: $125
Class I or II Designer: $50
Class III Designer: $150
Class IV Soil Evaluator: $50
You may incur additional fees for OWTS permit applications.
Beyond the application fees, budget for exam preparation. Optional prep courses are offered through the University of Rhode Island Onsite Wastewater Training Program (the New England Onsite Wastewater Training Center), which runs installer and designer prep courses. RIDEM does not publish a separate exam fee amount on its public pages, so confirm any examination and application fees through the RIDEM Office of Water Resources portal before you apply.
How to Get a Septic License in Rhode Island
The path depends on which credential you want, but the general process is straightforward. Most people start with the Installer license, which has no formal degree requirement. You submit an Installer Examination and License Application through the RIDEM Office of Water Resources portal, pay the application fee, and schedule the exam.
Designers build on prerequisite credentials. A Class I Designer must first hold an Installer license, a Class II Designer must be a registered Professional Land Surveyor, and a Class III Designer must be a licensed Professional Engineer in civil or environmental engineering. A Class IV Soil Evaluator qualifies through professional soil-science registration or a combination of education and four years of soil-studies experience.
After you meet the prerequisites and pass the required exam, you apply to RIDEM for the license itself, since passing the exam does not issue the license automatically. Applications and payments are handled through the RIDEM OWTS professional licensing program.
How Long Does it Take to Get a Septic License in Rhode Island?
The length of time it takes depends on the credential type. Installer exams are offered twice a year, in the spring and fall, so applicants will have to wait until the first exam date after applying. The Class I and Class II Designer exams are offered only once a year.
For Class III Designer, you must be registered as a Professional Engineer.
Becoming a Class IV Soil Scientist could take up to eight years (bachelor's degree and four years of professional experience in soil studies) to meet the prerequisites. In addition, the exams are only offered once a year.
Rhode Island Septic Training Programs and Schools
RIDEM offers study guides and optional exam prep courses for the required licensure exams. Details are available online. In addition, the University of Rhode Island Onsite Wastewater Training Program offers classroom and field training courses.
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Rhode Island Septic Licensing Exam Details
Exams are required for the Installer, Class I and II Designer, and Class IV Soil Evaluator licenses. The Installer exam is offered twice a year, while the others are offered just once a year. The exam schedule is posted online at dem.ri.gov, along with study guides and details on exam prep courses.
Exams include information on zoning, cesspools, drain fields, ground water, site plans, storm water, wetlands, septic system checkups, pumpouts, and more.
RIDEM administers the exams directly at DEM Headquarters, 235 Promenade Street, Providence, RI. The Class IV Soil Evaluator license requires both a written and a field exam. The written portion is closed book, includes multiple-choice, fill-in-the-blank, and true/false questions, and requires a score of at least 70% to pass. The Installer exam requires a passing grade, though RIDEM does not publish a specific score threshold for it.
How Can I Prepare for the Septic License Exam in Rhode Island?
RIDEM posts study guides and details on optional exam prep courses on its OWTS exam page. The University of Rhode Island Onsite Wastewater Training Program offers classroom and field courses that prepare candidates for the installer and designer exams.
Exams cover practical OWTS topics, including zoning, cesspools, drain fields, groundwater, site plans, stormwater, wetlands, system checkups, and pumpouts. Because the Class IV written exam is closed book, plan to study the reference material in advance, take any available practice questions, and get plenty of rest before test day.
Septic system licensing for the state is overseen by the RIDEM Onsite Wastewater Treatment Systems Permitting program. The RIDEM OWTS program has everything you need to know regarding licensing online, including rules and regulations, fact sheets, and FAQs. The Permitting program licenses five categories of OWTS Professionals.
Municipalities may enact their own wastewater management laws, so it's important to verify requirements in each locality where you intend to work.
Does My Rhode Island Septic License Work in Any Other State?
No. A Rhode Island OWTS license does not automatically transfer to another state. If you plan to work elsewhere, you will need to apply under that state's rules and meet its exam and experience requirements. Likewise, a license from another state does not automatically qualify you to work in Rhode Island.
What Are the Reciprocity Requirements for a Septic License in Rhode Island?
Rhode Island's OWTS regulations do not contain a reciprocity provision, so there is no established process to obtain a Rhode Island OWTS license based solely on a license held in another state. If you are moving from out of state, contact the RIDEM Office of Water Resources to confirm the current policy before applying, and plan to meet Rhode Island's own exam and experience requirements.
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 Rhode Island
A few Rhode Island specifics are worth knowing. Applications, payments, and exam scheduling run through the RIDEM Office of Water Resources online portal, so you will need to create an account. Municipalities may enact their own wastewater management ordinances, so verify local requirements in every jurisdiction where you plan to work. Individual OWTS permit applications are separate from your professional license and carry their own fees.
Are There Septic Scholarships in Rhode Island?
There are no scholarships specific to OWTS installer or designer training in Rhode Island, but there are funded pathways into the broader clean-water sector. The Community College of Rhode Island Clean Water Workforce program, offered with Real Jobs Rhode Island and the Rhode Island Department of Labor and Training, is a free 15-week training program for careers in drinking-water and wastewater operations. The RI Department of Labor and Training also lists free or reduced-cost training programs, including WIOA-funded and Real Jobs Rhode Island options, that can help offset training costs for eligible workers.
How Can Someone Verify My Septic License in Rhode Island?
RIDEM publishes current lists of licensed OWTS professionals so clients and employers can confirm your status. On the RIDEM OWTS professional licensing page, download the list of licensed OWTS installers or the list of licensed OWTS designers and soil evaluators. There is no real-time online lookup database, so for the most current status, contact the RIDEM Permit Application Center at (401) 537-4014.
When Can a Septic License Get Suspended in Rhode Island?
The RIDEM Director may deny, suspend, or revoke an OWTS license. Under the state's OWTS licensing rules (250-RICR-150-10-6), grounds for action against designers and soil evaluators include providing incorrect or misleading information to obtain a license, gross or repeated negligence, incompetence or misconduct, a felony involving moral turpitude, or the loss of a prerequisite professional license. For installers, Rhode Island General Laws § 5-56-5 allows the Director to deny, suspend, or revoke a license when work is not being conducted as required. Complaints against designers and soil evaluators are reviewed by an OWTS Designer Licensing Review Panel that recommends action to the Director.
Note: This information should not be considered legal advice. For detailed and specific information, refer to the official Rhode Island General Laws and RIDEM OWTS rules.
What Are the Penalties for Unlicensed Septic Work in Rhode Island?
Performing OWTS work without a license in Rhode Island is illegal. Under Rhode Island General Laws § 5-56-8, a knowing and willful violation is punishable by a fine of up to $500, up to 30 days in jail, or both, and each day of noncompliance is a separate offense. Separately, under Rhode Island General Laws § 42-17.6-2, RIDEM may assess administrative penalties for OWTS rule violations, with the specific amount set by the department's penalty rules. RIDEM can also pursue other enforcement actions to stop unlicensed work.
Note: This information should not be considered legal advice. For a detailed explanation, refer to the official Rhode Island General Laws and RIDEM OWTS rules.
Continuing Education
All Rhode Island OWTS license types must be renewed every three years, with a renewal fee of $150. Licensed designers (Class I and Class II) and soil evaluators are required to complete 12 continuing education units (CEUs) — the equivalent of 24 hours of approved coursework — each renewal period. If you have held a license in good standing for 12 or more years, you no longer need continuing education credits to renew. Continuing education opportunities are listed on the RIDEM website.
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 Rhode Island, or in any of the other 49 states and the District of Columbia through the ServiceTitan Licensing Hub.
