Page 1 of 33
WISCONSIN STORM WATER MANAGEMENT OPERATOR
PRACTICE EXAM 2026/2027 COMPLETE (100) CURRENT
TESTING QUESTIONS AND CORRECT ANSWERS WITH
DETAILED RATIONALES.
WATER
Prepare for the Wisconsin Storm Water Management Operator Exam Practice with a
focused study resource designed to reinforce essential stormwater management and
environmental protection concepts. It supports review of including NPDES permit
requirements, Storm Water Pollution Prevention Plans (SWPPP), Best Management
Practices (BMPs), erosion and sediment control, runoff reduction strategies, site
inspection procedures, and Wisconsin-specific regulations. This resource is best
suited for stormwater management operators, environmental professionals,
municipal staff, contractors, and candidates preparing for Wisconsin stormwater-
related certification assessments.
MULTIPLE CHOICE.
SECTION 1: REGULATORY FRAMEWORK & PERMITTING (Questions 1-15)
1. Which Wisconsin agency is primarily responsible for storm water
management regulation and permitting?
a) Wisconsin Department of Transportation (WisDOT)
b) Wisconsin Department of Natural Resources (WDNR)
c) Wisconsin Department of Safety and Professional Services (DSPS)
d) U.S. Environmental Protection Agency (EPA) Region 5
Answer: b) Wisconsin Department of Natural Resources (WDNR)
Rationale: The WDNR oversees stormwater, erosion control, and land
disturbance permitting in Wisconsin. While EPA sets federal standards,
WDNR is the delegated state authority for implementing NPDES and WPDES
storm water programs.
2. The primary federal law regulating storm water discharges is the:
a) Clean Air Act
, Page 2 of 33
b) Clean Water Act
c) Resource Conservation and Recovery Act (RCRA)
d) Safe Drinking Water Act
Answer: b) Clean Water Act
Rationale: The Clean Water Act (CWA) establishes the framework for
regulating discharges of pollutants into waters of the United States, including
storm water through the National Pollutant Discharge Elimination System
(NPDES) program.
3. In Wisconsin, the storm water permitting program operates under
which state law?
a) Chapter NR 114
b) Chapter NR 151
c) Chapter 283 of the Wisconsin Statutes (WPDES)
d) Chapter NR 216
Answer: c) Chapter 283 of the Wisconsin Statutes (WPDES)
Rationale: The Wisconsin Pollutant Discharge Elimination System (WPDES)
permit program is established under Chapter 283 of the Wisconsin Statutes
and administered by the WDNR.
4. Which of the following is required before starting land disturbing
construction activities in Wisconsin?
a) Notice of Intent (NOI) filing
b) Storm Water Pollution Prevention Plan (SWPPP) only
c) Both NOI and SWPPP (if permit coverage is required)
d) Erosion control permit only
Answer: c) Both NOI and SWPPP (if permit coverage is required)
Rationale: Construction site operators must submit a Notice of Intent (NOI)
to WDNR to obtain coverage under the Construction Site Storm Water Permit
and must develop and implement a SWPPP.
, Page 3 of 33
5. The Wisconsin Construction Site Storm Water Permit requires a
reduction of at least what percentage of potential sediment load?
a) 40%
b) 60%
c) 80%
d) 90%
Answer: c) 80%
Rationale: WDNR requires a reduction of at least 80% of the potential
sediment load in storm water runoff from construction sites on an average
annual basis.
6. What is the duration of a typical Wisconsin storm water operator
certification?
a) 1 year
b) 2 years
c) 3 years
d) 5 years
Answer: d) 5 years
Rationale: Wisconsin storm water operator certifications typically remain
valid for 5 years. Operators must maintain their certification by completing
continuing education and renewing as required.
7. Which regulation establishes certification requirements for storm
water operators in Wisconsin?
a) NR 114
b) NR 151
c) NR 216
d) NR 100
Answer: a) NR 114
Rationale: Chapter NR 114 of the Wisconsin Administrative Code establishes
certification requirements for waterworks, wastewater treatment plant,
septage servicing, and water system operators.
, Page 4 of 33
8. A facility claiming "No Exposure" to storm water must file which form
with the WDNR?
a) Form 3400-188 (No Exposure Certification)
b) Notice of Intent (NOI)
c) Notice of Termination (NOT)
d) Storm Water Pollution Prevention Plan (SWPPP)
Answer: a) Form 3400-188 (No Exposure Certification)
Rationale: To request the no exposure exclusion, facilities must file the DNR
No Exposure Certification Form #3400-188. This certification must be
renewed every 5 years.
9. Which permit is required for industrial facilities that discharge storm
water in Wisconsin?
a) WPDES Industrial Storm Water Permit
b) Construction Site Storm Water Permit
c) Municipal Separate Storm Sewer System (MS4) Permit
d) All of the above
Answer: a) WPDES Industrial Storm Water Permit
Rationale: Industrial facilities with storm water discharges that are not
covered by the no exposure exclusion must obtain coverage under a WPDES
Industrial Storm Water Permit.
10. What is the primary purpose of the Storm Water Pollution Prevention
Plan (SWPPP)?
a) To provide a site map
b) To identify potential sources of pollution and describe BMPs to prevent
storm water contamination
c) To list all construction materials on site
d) To document employee training
Answer: b) To identify potential sources of pollution and describe BMPs to
prevent storm water contamination
Rationale: The SWPPP is a site-specific plan that identifies potential sources
WISCONSIN STORM WATER MANAGEMENT OPERATOR
PRACTICE EXAM 2026/2027 COMPLETE (100) CURRENT
TESTING QUESTIONS AND CORRECT ANSWERS WITH
DETAILED RATIONALES.
WATER
Prepare for the Wisconsin Storm Water Management Operator Exam Practice with a
focused study resource designed to reinforce essential stormwater management and
environmental protection concepts. It supports review of including NPDES permit
requirements, Storm Water Pollution Prevention Plans (SWPPP), Best Management
Practices (BMPs), erosion and sediment control, runoff reduction strategies, site
inspection procedures, and Wisconsin-specific regulations. This resource is best
suited for stormwater management operators, environmental professionals,
municipal staff, contractors, and candidates preparing for Wisconsin stormwater-
related certification assessments.
MULTIPLE CHOICE.
SECTION 1: REGULATORY FRAMEWORK & PERMITTING (Questions 1-15)
1. Which Wisconsin agency is primarily responsible for storm water
management regulation and permitting?
a) Wisconsin Department of Transportation (WisDOT)
b) Wisconsin Department of Natural Resources (WDNR)
c) Wisconsin Department of Safety and Professional Services (DSPS)
d) U.S. Environmental Protection Agency (EPA) Region 5
Answer: b) Wisconsin Department of Natural Resources (WDNR)
Rationale: The WDNR oversees stormwater, erosion control, and land
disturbance permitting in Wisconsin. While EPA sets federal standards,
WDNR is the delegated state authority for implementing NPDES and WPDES
storm water programs.
2. The primary federal law regulating storm water discharges is the:
a) Clean Air Act
, Page 2 of 33
b) Clean Water Act
c) Resource Conservation and Recovery Act (RCRA)
d) Safe Drinking Water Act
Answer: b) Clean Water Act
Rationale: The Clean Water Act (CWA) establishes the framework for
regulating discharges of pollutants into waters of the United States, including
storm water through the National Pollutant Discharge Elimination System
(NPDES) program.
3. In Wisconsin, the storm water permitting program operates under
which state law?
a) Chapter NR 114
b) Chapter NR 151
c) Chapter 283 of the Wisconsin Statutes (WPDES)
d) Chapter NR 216
Answer: c) Chapter 283 of the Wisconsin Statutes (WPDES)
Rationale: The Wisconsin Pollutant Discharge Elimination System (WPDES)
permit program is established under Chapter 283 of the Wisconsin Statutes
and administered by the WDNR.
4. Which of the following is required before starting land disturbing
construction activities in Wisconsin?
a) Notice of Intent (NOI) filing
b) Storm Water Pollution Prevention Plan (SWPPP) only
c) Both NOI and SWPPP (if permit coverage is required)
d) Erosion control permit only
Answer: c) Both NOI and SWPPP (if permit coverage is required)
Rationale: Construction site operators must submit a Notice of Intent (NOI)
to WDNR to obtain coverage under the Construction Site Storm Water Permit
and must develop and implement a SWPPP.
, Page 3 of 33
5. The Wisconsin Construction Site Storm Water Permit requires a
reduction of at least what percentage of potential sediment load?
a) 40%
b) 60%
c) 80%
d) 90%
Answer: c) 80%
Rationale: WDNR requires a reduction of at least 80% of the potential
sediment load in storm water runoff from construction sites on an average
annual basis.
6. What is the duration of a typical Wisconsin storm water operator
certification?
a) 1 year
b) 2 years
c) 3 years
d) 5 years
Answer: d) 5 years
Rationale: Wisconsin storm water operator certifications typically remain
valid for 5 years. Operators must maintain their certification by completing
continuing education and renewing as required.
7. Which regulation establishes certification requirements for storm
water operators in Wisconsin?
a) NR 114
b) NR 151
c) NR 216
d) NR 100
Answer: a) NR 114
Rationale: Chapter NR 114 of the Wisconsin Administrative Code establishes
certification requirements for waterworks, wastewater treatment plant,
septage servicing, and water system operators.
, Page 4 of 33
8. A facility claiming "No Exposure" to storm water must file which form
with the WDNR?
a) Form 3400-188 (No Exposure Certification)
b) Notice of Intent (NOI)
c) Notice of Termination (NOT)
d) Storm Water Pollution Prevention Plan (SWPPP)
Answer: a) Form 3400-188 (No Exposure Certification)
Rationale: To request the no exposure exclusion, facilities must file the DNR
No Exposure Certification Form #3400-188. This certification must be
renewed every 5 years.
9. Which permit is required for industrial facilities that discharge storm
water in Wisconsin?
a) WPDES Industrial Storm Water Permit
b) Construction Site Storm Water Permit
c) Municipal Separate Storm Sewer System (MS4) Permit
d) All of the above
Answer: a) WPDES Industrial Storm Water Permit
Rationale: Industrial facilities with storm water discharges that are not
covered by the no exposure exclusion must obtain coverage under a WPDES
Industrial Storm Water Permit.
10. What is the primary purpose of the Storm Water Pollution Prevention
Plan (SWPPP)?
a) To provide a site map
b) To identify potential sources of pollution and describe BMPs to prevent
storm water contamination
c) To list all construction materials on site
d) To document employee training
Answer: b) To identify potential sources of pollution and describe BMPs to
prevent storm water contamination
Rationale: The SWPPP is a site-specific plan that identifies potential sources
