WASHINGTON PESTICIDE LAWS & SAFETY EXAM – QUESTIONS
AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | DOWNLOAD AND PASS | LATEST EXAM UPDATE
2026/2027
Core Domains
• Federal and State Pesticide Laws (FIFRA, RCW 17.21, RCW 15.58)
• WSDA Licensing, Certification, and Recertification Requirements
• Pesticide Labeling, Signal Words, and Toxicity Classifications
• Pesticide Formulations, Mixtures, and Compatibility
• Integrated Pest Management (IPM) and Pest Control Methods
• Personal Protective Equipment (PPE) and Pesticide Safety
• Environmental Protection, Drift Control, and Groundwater Safety
• Recordkeeping, Storage, Transportation, and Disposal
• Worker Protection Standard (WPS) and Restricted Entry Intervals
• Emergency Response, First Aid, and Poisoning Recognition
Introduction
This comprehensive examination is designed to evaluate the essential knowledge
and competency required for pesticide applicator certification in Washington
State. The assessment covers federal and state pesticide laws, WSDA licensing
requirements, pesticide labeling and safety, integrated pest management
principles, and environmental protection measures. The multiple-choice format
integrates practical scenarios requiring application of WAC 16-228 rules, RCW
17.21 requirements, and evidence-based safety practices. Candidates are expected
to demonstrate mastery of pesticide regulations, safe handling procedures, and the
ability to make sound decisions regarding pest control and environmental
stewardship. This examination serves as a rigorous evaluation of readiness for the
Washington Pesticide Laws and Safety Examination.
,SECTION ONE: QUESTIONS 1–100
1. What federal law regulates the registration, distribution, sale, and use of
pesticides in the United States?
A. The Clean Water Act (CWA)
B. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
C. The Occupational Safety and Health Act (OSHA)
D. The Endangered Species Act (ESA)
B. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
RATIONALE: FIFRA (7 U.S.C. §136 et seq.) is the primary federal law
governing pesticide registration and use in the U.S. The WSDA enforces FIFRA in
Washington State. The Clean Water Act regulates water quality, OSHA regulates
workplace safety, and the ESA protects endangered species .
2. What is the primary Washington state law governing pesticide application,
licensing, and enforcement?
A. RCW 15.58 only
B. RCW 17.21 – Washington Pesticide Application Act
C. RCW 90.48 Water Pollution Control Act
D. WAC 16-200 Plant Quarantine
B. RCW 17.21 – Washington Pesticide Application Act
RATIONALE: RCW 17.21, the Washington Pesticide Application Act, is the
primary state law governing pesticide application, licensing, and enforcement in
Washington. RCW 15.58 (Washington Pesticide Control Act) covers registration
and distribution .
3. What Washington state law governs pesticide registration, distribution, and
labeling?
A. RCW 17.21
B. RCW 15.58 – Washington Pesticide Control Act
,C. RCW 49.17
D. WAC 296-307
B. RCW 15.58 – Washington Pesticide Control Act
RATIONALE: The Washington Pesticide Control Act (RCW 15.58) regulates
the registration, distribution, and labeling of pesticides within the state,
complementing FIFRA. RCW 17.21 covers applicator certification .
4. Which Washington state agency administers the pesticide licensing
program?
A. Washington Department of Ecology
B. Washington State Department of Agriculture (WSDA)
C. Washington Department of Health
D. Washington State University Extension
B. Washington State Department of Agriculture (WSDA)
RATIONALE: The Washington State Department of Agriculture (WSDA) is
responsible for pesticide applicator licensing, enforcement of the Washington
Pesticide Application Act (RCW 17.21), and product registration .
5. What is the primary administrative code that governs pesticide use,
application, and licensing in Washington?
A. WAC 296-307 (Safety Standards for Agriculture)
B. WAC 16-228 (General Pesticide Rules)
C. RCW 70A (Environmental Health and Safety)
D. RCW 49.17 (Washington Industrial Safety and Health Act)
B. WAC 16-228 (General Pesticide Rules)
RATIONALE: WAC 16-228 (General Pesticide Rules) is the primary state
regulation for pesticide use, application, and licensing in Washington. WAC 296-
307 covers agricultural safety .
6. Every pesticide in Washington must first be registered with:
, A. The EPA only
B. The WSDA
C. The Department of Health
D. The local county agricultural office
B. The WSDA
RATIONALE: Every pesticide in Washington must first be registered with the
WSDA. This is a state requirement in addition to federal EPA registration .
7. What is the passing score for the Washington pesticide licensing
examinations?
A. 60%
B. 70%
C. 75%
D. 80%
B. 70%
RATIONALE: A passing score of seventy percent (70%) is established for
examinations required under WAC 16-228. The Washington Laws and Safety
exam is included in this requirement .
8. How long is a passing exam score valid for obtaining a license in
Washington?
A. 6 months
B. 12 months (one year)
C. 18 months
D. 24 months
B. 12 months (one year)
RATIONALE: A passing exam score is valid for one year from the date of the
examination to obtain a license. This applies to all pesticide licensing categories
and the Laws and Safety exam .
9. How often must Washington pesticide applicators renew their licenses?
AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | DOWNLOAD AND PASS | LATEST EXAM UPDATE
2026/2027
Core Domains
• Federal and State Pesticide Laws (FIFRA, RCW 17.21, RCW 15.58)
• WSDA Licensing, Certification, and Recertification Requirements
• Pesticide Labeling, Signal Words, and Toxicity Classifications
• Pesticide Formulations, Mixtures, and Compatibility
• Integrated Pest Management (IPM) and Pest Control Methods
• Personal Protective Equipment (PPE) and Pesticide Safety
• Environmental Protection, Drift Control, and Groundwater Safety
• Recordkeeping, Storage, Transportation, and Disposal
• Worker Protection Standard (WPS) and Restricted Entry Intervals
• Emergency Response, First Aid, and Poisoning Recognition
Introduction
This comprehensive examination is designed to evaluate the essential knowledge
and competency required for pesticide applicator certification in Washington
State. The assessment covers federal and state pesticide laws, WSDA licensing
requirements, pesticide labeling and safety, integrated pest management
principles, and environmental protection measures. The multiple-choice format
integrates practical scenarios requiring application of WAC 16-228 rules, RCW
17.21 requirements, and evidence-based safety practices. Candidates are expected
to demonstrate mastery of pesticide regulations, safe handling procedures, and the
ability to make sound decisions regarding pest control and environmental
stewardship. This examination serves as a rigorous evaluation of readiness for the
Washington Pesticide Laws and Safety Examination.
,SECTION ONE: QUESTIONS 1–100
1. What federal law regulates the registration, distribution, sale, and use of
pesticides in the United States?
A. The Clean Water Act (CWA)
B. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
C. The Occupational Safety and Health Act (OSHA)
D. The Endangered Species Act (ESA)
B. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
RATIONALE: FIFRA (7 U.S.C. §136 et seq.) is the primary federal law
governing pesticide registration and use in the U.S. The WSDA enforces FIFRA in
Washington State. The Clean Water Act regulates water quality, OSHA regulates
workplace safety, and the ESA protects endangered species .
2. What is the primary Washington state law governing pesticide application,
licensing, and enforcement?
A. RCW 15.58 only
B. RCW 17.21 – Washington Pesticide Application Act
C. RCW 90.48 Water Pollution Control Act
D. WAC 16-200 Plant Quarantine
B. RCW 17.21 – Washington Pesticide Application Act
RATIONALE: RCW 17.21, the Washington Pesticide Application Act, is the
primary state law governing pesticide application, licensing, and enforcement in
Washington. RCW 15.58 (Washington Pesticide Control Act) covers registration
and distribution .
3. What Washington state law governs pesticide registration, distribution, and
labeling?
A. RCW 17.21
B. RCW 15.58 – Washington Pesticide Control Act
,C. RCW 49.17
D. WAC 296-307
B. RCW 15.58 – Washington Pesticide Control Act
RATIONALE: The Washington Pesticide Control Act (RCW 15.58) regulates
the registration, distribution, and labeling of pesticides within the state,
complementing FIFRA. RCW 17.21 covers applicator certification .
4. Which Washington state agency administers the pesticide licensing
program?
A. Washington Department of Ecology
B. Washington State Department of Agriculture (WSDA)
C. Washington Department of Health
D. Washington State University Extension
B. Washington State Department of Agriculture (WSDA)
RATIONALE: The Washington State Department of Agriculture (WSDA) is
responsible for pesticide applicator licensing, enforcement of the Washington
Pesticide Application Act (RCW 17.21), and product registration .
5. What is the primary administrative code that governs pesticide use,
application, and licensing in Washington?
A. WAC 296-307 (Safety Standards for Agriculture)
B. WAC 16-228 (General Pesticide Rules)
C. RCW 70A (Environmental Health and Safety)
D. RCW 49.17 (Washington Industrial Safety and Health Act)
B. WAC 16-228 (General Pesticide Rules)
RATIONALE: WAC 16-228 (General Pesticide Rules) is the primary state
regulation for pesticide use, application, and licensing in Washington. WAC 296-
307 covers agricultural safety .
6. Every pesticide in Washington must first be registered with:
, A. The EPA only
B. The WSDA
C. The Department of Health
D. The local county agricultural office
B. The WSDA
RATIONALE: Every pesticide in Washington must first be registered with the
WSDA. This is a state requirement in addition to federal EPA registration .
7. What is the passing score for the Washington pesticide licensing
examinations?
A. 60%
B. 70%
C. 75%
D. 80%
B. 70%
RATIONALE: A passing score of seventy percent (70%) is established for
examinations required under WAC 16-228. The Washington Laws and Safety
exam is included in this requirement .
8. How long is a passing exam score valid for obtaining a license in
Washington?
A. 6 months
B. 12 months (one year)
C. 18 months
D. 24 months
B. 12 months (one year)
RATIONALE: A passing exam score is valid for one year from the date of the
examination to obtain a license. This applies to all pesticide licensing categories
and the Laws and Safety exam .
9. How often must Washington pesticide applicators renew their licenses?
