TCEQ OSSF Exam 2026-2027 | 80 Practice
Questions & Answers | Installer II,
Designated Representative, Site Evaluator
Test Prep
Description:
Pass the 2026-2027 TCEQ OSSF certification exam. 80 updated practice questions with
answers and explanations covering Installer II, Designated Representative, Site
Evaluator, Maintenance Provider, soil evaluation, permitting, and enforcement.
Download the complete study guide now and ace your exam on the first attempt.
, TCEQ OSSF Exam 2026-2027
Subject: On-Site Sewage Facility (OSSF) Regulations and Professional Practices
Jurisdiction: Texas Commission on Environmental Quality (TCEQ)
Target Audience: OSSF Installers, Designated Representatives, Site Evaluators, and
Maintenance Providers
Section 1: Regulatory Framework and Historical Context
Question 1
The Texas Commission on Environmental Quality (TCEQ) initially adopted the current On-
Site Sewage Facility (OSSF) rules in which year, followed by multiple subsequent revisions?
A. 1987
B. 1997
C. 2005
D. 2015
Answer: B
Explanation: The TCEQ adopted the current OSSF rules in 1997 and has revised them
several times since to align with evolving environmental and public health standards.
Section 2: Roles and Responsibilities
Question 2
Which licensed professional is authorized to review permit applications, conduct site
evaluations, examine planning materials, and perform inspections of OSSFs?
A. Installer
B. Site Evaluator
C. Designated Representative
D. Maintenance Provider
Answer: C
,Explanation: The Designated Representative holds the authority to review permit
applications, evaluate sites, assess planning documents, and inspect OSSFs on behalf of the
permitting authority.
Question 3
An individual who holds a valid TCEQ license and is compensated by another party to
construct, install, alter, or repair an OSSF is defined as a(n):
A. Site Evaluator
B. Designated Representative
C. Installer
D. Professional Engineer
Answer: C
Explanation: Under TCEQ rules, an Installer is a licensed individual who performs
construction, installation, alteration, or repair of an OSSF for compensation.
Question 4
Which professional is responsible for visiting a property to conduct soil evaluations and a site
survey?
A. Installer
B. Designated Representative
C. Maintenance Provider
D. Site Evaluator
Answer: D
Explanation: The Site Evaluator performs on-site soil assessments and surveys to determine
suitability for an OSSF.
Question 5
Within the jurisdiction of the permitting authority, the Designated Representative is
prohibited from performing which of the following compensated activities?
A. Serving as a public health consultant
B. Working as an Installer, Designer for a fee, or private Site Evaluator
, C. Conducting soil texture analyses
D. Reviewing as-built drawings
Answer: B
Explanation: To avoid conflicts of interest, the Designated Representative cannot act as an
Installer, paid Designer, or private Site Evaluator within their permitting authority’s
jurisdiction.
Section 3: Licenses Requiring Prior Experience
Question 6
Which OSSF license types require documented previous experience according to TCEQ
rules? (Select all that apply)
A. Installer I
B. Installer II
C. Maintenance Provider
D. Site Evaluator (without experience in soil science)
Answer: B and C
Explanation: Installer II and Maintenance Provider licenses require prior field experience,
whereas Installer I and entry-level Site Evaluator roles may have different prerequisites.
Section 4: Engineering and Design Requirements
Question 7
Planning materials for an OSSF that utilizes secondary treatment must be prepared by a:
A. Licensed Site Evaluator
B. Designated Representative
C. Professional Engineer (PE) or Registered Sanitarian (RS)
D. Maintenance Provider II
Answer: C
Questions & Answers | Installer II,
Designated Representative, Site Evaluator
Test Prep
Description:
Pass the 2026-2027 TCEQ OSSF certification exam. 80 updated practice questions with
answers and explanations covering Installer II, Designated Representative, Site
Evaluator, Maintenance Provider, soil evaluation, permitting, and enforcement.
Download the complete study guide now and ace your exam on the first attempt.
, TCEQ OSSF Exam 2026-2027
Subject: On-Site Sewage Facility (OSSF) Regulations and Professional Practices
Jurisdiction: Texas Commission on Environmental Quality (TCEQ)
Target Audience: OSSF Installers, Designated Representatives, Site Evaluators, and
Maintenance Providers
Section 1: Regulatory Framework and Historical Context
Question 1
The Texas Commission on Environmental Quality (TCEQ) initially adopted the current On-
Site Sewage Facility (OSSF) rules in which year, followed by multiple subsequent revisions?
A. 1987
B. 1997
C. 2005
D. 2015
Answer: B
Explanation: The TCEQ adopted the current OSSF rules in 1997 and has revised them
several times since to align with evolving environmental and public health standards.
Section 2: Roles and Responsibilities
Question 2
Which licensed professional is authorized to review permit applications, conduct site
evaluations, examine planning materials, and perform inspections of OSSFs?
A. Installer
B. Site Evaluator
C. Designated Representative
D. Maintenance Provider
Answer: C
,Explanation: The Designated Representative holds the authority to review permit
applications, evaluate sites, assess planning documents, and inspect OSSFs on behalf of the
permitting authority.
Question 3
An individual who holds a valid TCEQ license and is compensated by another party to
construct, install, alter, or repair an OSSF is defined as a(n):
A. Site Evaluator
B. Designated Representative
C. Installer
D. Professional Engineer
Answer: C
Explanation: Under TCEQ rules, an Installer is a licensed individual who performs
construction, installation, alteration, or repair of an OSSF for compensation.
Question 4
Which professional is responsible for visiting a property to conduct soil evaluations and a site
survey?
A. Installer
B. Designated Representative
C. Maintenance Provider
D. Site Evaluator
Answer: D
Explanation: The Site Evaluator performs on-site soil assessments and surveys to determine
suitability for an OSSF.
Question 5
Within the jurisdiction of the permitting authority, the Designated Representative is
prohibited from performing which of the following compensated activities?
A. Serving as a public health consultant
B. Working as an Installer, Designer for a fee, or private Site Evaluator
, C. Conducting soil texture analyses
D. Reviewing as-built drawings
Answer: B
Explanation: To avoid conflicts of interest, the Designated Representative cannot act as an
Installer, paid Designer, or private Site Evaluator within their permitting authority’s
jurisdiction.
Section 3: Licenses Requiring Prior Experience
Question 6
Which OSSF license types require documented previous experience according to TCEQ
rules? (Select all that apply)
A. Installer I
B. Installer II
C. Maintenance Provider
D. Site Evaluator (without experience in soil science)
Answer: B and C
Explanation: Installer II and Maintenance Provider licenses require prior field experience,
whereas Installer I and entry-level Site Evaluator roles may have different prerequisites.
Section 4: Engineering and Design Requirements
Question 7
Planning materials for an OSSF that utilizes secondary treatment must be prepared by a:
A. Licensed Site Evaluator
B. Designated Representative
C. Professional Engineer (PE) or Registered Sanitarian (RS)
D. Maintenance Provider II
Answer: C
