Title: Soil Scientist: What a Licensed One Does for a Land Purchase | FOUND Description: A licensed soil scientist reads the soil on land you plan to buy: septic suitability, wet soils, and wetlands. How North Carolina licenses them and when to hire one. Canonical: https://lotsfound.com/insights/soil-scientist/ # Licensed soil scientists: what they do for a land purchase A licensed soil scientist evaluates the soil on a tract and puts a sealed report behind the answer. For a land purchase in North Carolina, that usually means septic suitability, wet soils, and signs of wetlands. North Carolina licenses the profession under Chapter 89F of the General Statutes. [Start a land search](/services/land-and-acreage/) In this article 1. [What a licensed soil scientist does](#what-a-licensed-soil-scientist-does) 2. [How North Carolina licenses soil scientists](#how-north-carolina-licenses-soil-scientists) 3. [What a soil scientist evaluates for septic](#what-a-soil-scientist-evaluates-for-septic) 4. [Wetlands and hydric soils](#wetlands-and-hydric-soils) 5. [How a soil scientist differs from a geotechnical engineer](#how-a-soil-scientist-differs-from-a-geotechnical-engineer) 6. [When a land buyer hires one](#when-a-land-buyer-hires-one) 7. [Key recap](#key-recap) 8. [Questions](#questions) 9. [References](#references) > **Quick summary:** This guide explains what a licensed soil scientist does, how North Carolina licenses the profession, how the work differs from a geotechnical engineer's, and when a land buyer hires one. It is for buyers of rural and infill land, and for builders who count lots on septic. The key takeaway: hire a soil scientist before the due diligence period ends when septic, wet ground, or wetlands could change what the land can hold. ## What a licensed soil scientist does A licensed soil scientist investigates and evaluates soil and how water, nutrients, and plants move through it, then signs and seals a report. North Carolina defines the practice of soil science in [N.C. Gen. Stat. § 89F-3](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-3.html). The definition lists the reports a soil scientist prepares, including these: - **Septic and ground absorption systems.** Whether soil can take wastewater from subsurface systems. - **Land application.** Spreading of sludge, septage, and other residuals, and spray irrigation of wastewater. - **Erosion and sediment.** Soil erodibility and sedimentation. - **Wet soils.** Identification of hydric soil and redoximorphic features, the color patterns that show where water sits. For a land purchase, the first and last items matter most. They decide whether a lot can use septic and where wet ground limits building. ## How North Carolina licenses soil scientists North Carolina licenses soil scientists through the [North Carolina Board for Licensing of Soil Scientists](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-4.html), a seven-member board created by statute. The board's [website](https://ncblss.wordpress.ncsu.edu/) publishes a directory of licensed soil scientists. To be licensed, an applicant needs a bachelor of science degree with at least 15 semester hours in soil science, a passing score on the board's examination, and at least three years of professional work experience as a soil scientist. Those minimums are in [N.C. Gen. Stat. § 89F-10](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-10.html), which lets the board accept an advanced degree for part of the experience. The title is protected. Apart from the exemptions in the chapter, only a licensed soil scientist, or a subordinate under one's direction, may practice soil science or prepare soil science reports that bear on public health, property, or the environment, under [N.C. Gen. Stat. § 89F-19](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-19.html). Every report the licensee prepares or approves must carry the seal "Licensed Soil Scientist - State of North Carolina," under [§ 89F-14](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-14.html). Ask for the seal on any report you rely on. ## What a soil scientist evaluates for septic For septic, a soil scientist evaluates the soil conditions and site features that decide whether a lot can hold a wastewater system. State law lets a licensed soil scientist do that evaluation in place of the health department, under [N.C. Gen. Stat. § 130A-335(a1)](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_130A/GS_130A-335.html). The statute names the features: topography, soil morphology, soil wetness, soil depth, restrictive horizons, and available space. The soil scientist digs pits or bores, reads the soil layers, and maps the usable soil. On a tract with many lots, that map shows where septic fits and where it does not. This is the work people call a perc test. See [Perc test: what it is and what it costs](/insights/perc-test/) and [Drainfield: how a septic drainfield works and what limits it](/insights/drainfield/). A soil scientist with an added state certification can do more. As an Authorized On-Site Wastewater Evaluator, the soil scientist can prepare sealed soil and site evaluations and the layout for a nonengineered system, under [N.C. Gen. Stat. § 130A-336.2](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_130A/GS_130A-336.2.html). See [Septic permits in North Carolina: the improvement permit, the construction authorization, and the operation permit](/insights/septic-permit-north-carolina/) for where that path fits. > **The short version:** A soil scientist answers whether the soil can treat wastewater and where water sits in it. An engineer answers whether the ground can carry a load. A land purchase can need both. ## Wetlands and hydric soils A soil scientist identifies hydric soils and redoximorphic features, the soil evidence of ground that stays wet. That identification is part of the practice defined in § 89F-3. Wet ground matters for septic too: the state rule makes a jurisdictional wetland unsuitable for a wastewater system unless the U.S. Army Corps of Engineers or DEQ approves the use in writing, under [15A N.C. Admin. Code 18E .0502](http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2018%20-%20environmental%20health/subchapter%20e/15a%20ncac%2018e%20.0502.pdf). The soil scientist's report is evidence. The agency decides jurisdiction. See [Wetland delineation: what it is and when land needs one](/insights/what-is-a-wetland-delineation/). ## How a soil scientist differs from a geotechnical engineer A soil scientist reads soil as a medium for water, plants, and treatment. A geotechnical engineer reads it as a material that carries foundations, roads, and fill. The soil scientist statute says it does not stop registered professional engineers from practicing soil mechanics and foundation engineering, under [N.C. Gen. Stat. § 89F-8](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-8.html). The line runs both ways. A licensed soil scientist may not design engineering works or prepare plats as a land surveyor without holding that license too, under [§ 89F-19](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-19.html). | Question | Who answers | |---|---| | Can this lot use septic, and where? | Licensed soil scientist or the local health department | | Are there hydric soils or signs of a wetland? | Licensed soil scientist, with the Corps or DEQ on jurisdiction | | Will the soil carry a foundation, a road, or fill? | Geotechnical engineer (a professional engineer) | | Where are the boundary lines? | Licensed land surveyor | > **Take action:** If a tract depends on septic or shows wet soils on the survey map, plan a soil scientist's evaluation inside your due diligence period. Start with [Acreage that holds up after the survey](/services/land-and-acreage/). ## When a land buyer hires one A land buyer hires a soil scientist when the soil can change the price or the plan. These are the common cases: 1. **No sewer.** Every homesite depends on septic, so the soil sets the lot count. See [A water system nearby is not water for your project](/what-we-check/water-and-sewer/). 2. **Wet soils on the map.** The soil survey shows hydric or poorly drained soils. See [Web Soil Survey: how to read the soils on a parcel](/insights/web-soil-survey/). 3. **A subdivision plan.** A builder needs a soil map across the tract before drawing lots. 4. **A dated permit.** An existing septic permit needs a check that site conditions are unchanged. 5. **Wetland questions.** Low ground or streams suggest a delineation may be needed. Order the evaluation early in the due diligence period, so the result arrives before your deadline. See [A land due diligence checklist for North Carolina](/insights/land-due-diligence-checklist/). The public record shows soil types at survey scale. It cannot show the soil at a given homesite, because soils change inside one mapped unit. The soil scientist's sealed report answers that. ## Key recap - A licensed soil scientist evaluates soil for septic suitability, land application, erosion, and hydric soils, and seals the report. - North Carolina licenses soil scientists under Chapter 89F through a seven-member board, and the title is protected. - State law lets a licensed soil scientist evaluate a septic site in place of the health department. - A geotechnical engineer, not a soil scientist, answers foundation and load questions. - Hire one early in due diligence when the land depends on septic or shows wet soils. ## Questions ### What does a soil scientist do for a septic system? A licensed soil scientist evaluates the soil conditions and site features that decide whether a lot can hold a septic system and where. State law allows that evaluation in place of the health department's. With added certification as an Authorized On-Site Wastewater Evaluator, the soil scientist can also lay out a nonengineered system. ### How do I find a licensed soil scientist in North Carolina? Use the directory on the website of the North Carolina Board for Licensing of Soil Scientists. Ask for the license number and check that the report carries the licensee's seal. ### Is a soil scientist the same as a geotechnical engineer? No. A soil scientist evaluates soil for water movement, wastewater treatment, and wet soils. A geotechnical engineer is a professional engineer who evaluates whether soil can carry foundations, roads, and fill. ## References Primary sources cited on this page, in APA style. - 15A N.C. Admin. Code 18E .0502 (2026). [http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2018%20-%20environmental%20health/subchapter%20e/15a%20ncac%2018e%20.0502.pdf](http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2018%20-%20environmental%20health/subchapter%20e/15a%20ncac%2018e%20.0502.pdf) - N.C. Gen. Stat. § 130A-335 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_130A/GS_130A-335.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_130A/GS_130A-335.html) - N.C. Gen. Stat. § 130A-336.2 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_130A/GS_130A-336.2.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_130A/GS_130A-336.2.html) - N.C. Gen. Stat. § 89F-10 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-10.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-10.html) - N.C. Gen. Stat. § 89F-14 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-14.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-14.html) - N.C. Gen. Stat. § 89F-19 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-19.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-19.html) - N.C. Gen. Stat. § 89F-3 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-3.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-3.html) - N.C. Gen. Stat. § 89F-4 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-4.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-4.html) - N.C. Gen. Stat. § 89F-8 (2025). [https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-8.html](https://www.ncleg.gov/EnactedLegislation/Statutes/HTML/BySection/Chapter_89F/GS_89F-8.html) - North Carolina Board of Licensed Soil Scientists. (n.d.). *The North Carolina Board of Licensed Soil Scientists*. Retrieved October 3, 2026, from [https://ncblss.wordpress.ncsu.edu/](https://ncblss.wordpress.ncsu.edu/) ## Water, fiber, and access - [A water system nearby is not water for your project](/what-we-check/water-and-sewer/) - [Data center water usage: what it means for a site](/insights/data-center-water-usage/) - [Data center cooling systems and what they ask of a site](/insights/data-center-cooling-systems/) - [Liquid cooling in data centers: what it changes for a site](/insights/liquid-cooling-data-center/) - [Reclaimed water: what it is and why large users want it](/insights/reclaimed-water/) - [Sewer, septic, or a package plant](/insights/sewer-septic-or-package-plant/) - [Fiber nearby is not fiber to the site](/what-we-check/fiber/) - [Fiber route diversity: why two carriers are not two routes](/insights/fiber-route-diversity/) - [A road beside the land is not a way in](/what-we-check/access-and-roads/) - [NCDOT driveway permit: how access to a state road works](/insights/ncdot-driveway-permit/) - [Septic permits in North Carolina: the improvement permit, the construction authorization, and the operation permit](/insights/septic-permit-north-carolina/) - [Drainfield: how a septic drainfield works and what limits it](/insights/drainfield/) - [Well permits in North Carolina: drilling a private well](/insights/well-permit-north-carolina/) - [Driveway culverts: who approves the pipe under your drive](/insights/driveway-culvert/) - [Septic tank size in North Carolina: how the rules set it](/insights/septic-tank-size/) Send the requirements. 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