NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
NEW HAMPSHIRE
SEPTIC INSTALLER
EXAM 1
System Installation & Construction
100 original multiple-choice questions | 10 focused sections | Answers, explanations & New Hampshire rule
references
2026/2027 INDEPENDENT PRACTICE EDITION
Prepared using New Hampshire Env-Wq 1000, effective February 1, 2026. This is not an NHDES publication,
official exam, or set of real licensing-exam questions. Requirements and approved project plans control actual
work.
WHAT IS INSIDE
• Questions 1–100: construction-focused examination.
• Quick answer key with ten blocks of ten.
• Full explanations and precise regulation references.
• Official source URL and field verification checklist.
Study edition: 13 October 2026 | Suggested practice time: 120 minutes | Suggested self-check target: 80/100 (not an official passing
score).
Independent study resource • Current rules checked October 2026 1
,NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
Using This Practice Exam
Choose the single best answer for each question. Use the answer sheet or a separate page if you want a timed attempt.
The question set combines rule-based knowledge, calculation, field sequencing, and practical construction judgment.
Exam allocation
01–010 APPROVALS, PERMITS & INSPECTIONS • 10 questions
11–020 PLAN READING & SITE READINESS • 10 questions
21–030 SEWER LINES & GRAVITY FLOW • 10 questions
31–040 SEPTIC TANK CAPACITY & BEDDING • 10 questions
41–050 TANK FITTINGS & ACCESS • 10 questions
51–060 DISTRIBUTION BOXES & CONDUITS • 10 questions
61–070 EDA EXCAVATION & SOIL PROTECTION • 10 questions
71–080 BEDS, TRENCHES & BACKFILL • 10 questions
81–090 PRESSURE & SPECIAL SYSTEMS • 10 questions
91–100 INTEGRATED CONSTRUCTION SCENARIOS • 10 questions
Safety and applicability
The questions test the cited state regulations and construction principles. Always use the current enacted rules,
actual signed approved plans, manufacturer instructions, applicable plumbing and excavation-safety requirements,
and directions from the responsible professionals and NHDES.
Examination begins on the next page. Do not turn to the key until you have finished.
Independent study resource • Current rules checked October 2026 2
,NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
01 | APPROVALS, PERMITS & INSPECTIONS
001. What is the primary purpose of the Env-Wq 1000 rules?
A. Specify municipal road paving methods
B. Remove all construction permit requirements
C. Increase building density on every lot
D. Protect waters and reduce health hazards from sewage
002. During construction, where must an ISDS construction approval be posted?
A. Only at the town clerk's office
B. At the property owner's off-site office
C. On the site, readily visible from a public way
D. Inside a locked job trailer
003. When may a completed ISDS ordinarily be covered and put into service?
A. After required final inspection and approval
B. When a contractor signs an invoice
C. After the owner verbally accepts the work
D. As soon as pipe connections are glued
004. A site constraint prevents installation of the full ISDS at once. Which statement about partial inspection is
accurate?
A. Any number of partial inspections must be granted
B. One partial inspection per site may be requested for a completely installed component
C. A partial inspection automatically approves the system to operate
D. Partial inspection eliminates the need for final inspection
005. Who is responsible for work performed using a permitted installer's permit number?
A. Only the property owner
B. The municipality in all cases
C. The permitted installer whose number is used
D. Only the equipment rental company
006. An installer requests an on-the-spot waiver for an unapproved bed location. What do the rules provide?
A. The inspector must allow it if groundwater is deep
B. Field waivers are prohibited
C. A waiver is automatic below 600 GPD
D. Any licensed excavator can authorize it
Independent study resource • Current rules checked October 2026 3
, NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
007. Which event is required before approval to operate for a P.E.-required ISDS?
A. A contractor's private checklist without certification
B. Only a homeowner walk-through
C. Professional inspections during construction plus signed, sealed certification
D. A tank manufacturer's sales receipt only
008. The installer discovers that the approved EDA bed bottom must change. Which step is most consistent with
the 2026 rules?
A. Change it and explain at final inspection
B. Obtain a new construction approval through the designer's submission
C. Put the new elevation in the daily log only
D. Use the septic tank permit as authorization
009. If the construction approval has not led to an inspection request or approval to operate, when does it
ordinarily expire?
A. One year after approval
B. Six months after approval
C. Never
D. Four years after approval
010. Which statement about an NHDES final inspection is most accurate?
A. It permits uninspected backfill of the EDA
B. It makes approved plans optional
C. It is not a substitute for good construction oversight
D. It substitutes for all installer quality control
Independent study resource • Current rules checked October 2026 4
NEW HAMPSHIRE
SEPTIC INSTALLER
EXAM 1
System Installation & Construction
100 original multiple-choice questions | 10 focused sections | Answers, explanations & New Hampshire rule
references
2026/2027 INDEPENDENT PRACTICE EDITION
Prepared using New Hampshire Env-Wq 1000, effective February 1, 2026. This is not an NHDES publication,
official exam, or set of real licensing-exam questions. Requirements and approved project plans control actual
work.
WHAT IS INSIDE
• Questions 1–100: construction-focused examination.
• Quick answer key with ten blocks of ten.
• Full explanations and precise regulation references.
• Official source URL and field verification checklist.
Study edition: 13 October 2026 | Suggested practice time: 120 minutes | Suggested self-check target: 80/100 (not an official passing
score).
Independent study resource • Current rules checked October 2026 1
,NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
Using This Practice Exam
Choose the single best answer for each question. Use the answer sheet or a separate page if you want a timed attempt.
The question set combines rule-based knowledge, calculation, field sequencing, and practical construction judgment.
Exam allocation
01–010 APPROVALS, PERMITS & INSPECTIONS • 10 questions
11–020 PLAN READING & SITE READINESS • 10 questions
21–030 SEWER LINES & GRAVITY FLOW • 10 questions
31–040 SEPTIC TANK CAPACITY & BEDDING • 10 questions
41–050 TANK FITTINGS & ACCESS • 10 questions
51–060 DISTRIBUTION BOXES & CONDUITS • 10 questions
61–070 EDA EXCAVATION & SOIL PROTECTION • 10 questions
71–080 BEDS, TRENCHES & BACKFILL • 10 questions
81–090 PRESSURE & SPECIAL SYSTEMS • 10 questions
91–100 INTEGRATED CONSTRUCTION SCENARIOS • 10 questions
Safety and applicability
The questions test the cited state regulations and construction principles. Always use the current enacted rules,
actual signed approved plans, manufacturer instructions, applicable plumbing and excavation-safety requirements,
and directions from the responsible professionals and NHDES.
Examination begins on the next page. Do not turn to the key until you have finished.
Independent study resource • Current rules checked October 2026 2
,NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
01 | APPROVALS, PERMITS & INSPECTIONS
001. What is the primary purpose of the Env-Wq 1000 rules?
A. Specify municipal road paving methods
B. Remove all construction permit requirements
C. Increase building density on every lot
D. Protect waters and reduce health hazards from sewage
002. During construction, where must an ISDS construction approval be posted?
A. Only at the town clerk's office
B. At the property owner's off-site office
C. On the site, readily visible from a public way
D. Inside a locked job trailer
003. When may a completed ISDS ordinarily be covered and put into service?
A. After required final inspection and approval
B. When a contractor signs an invoice
C. After the owner verbally accepts the work
D. As soon as pipe connections are glued
004. A site constraint prevents installation of the full ISDS at once. Which statement about partial inspection is
accurate?
A. Any number of partial inspections must be granted
B. One partial inspection per site may be requested for a completely installed component
C. A partial inspection automatically approves the system to operate
D. Partial inspection eliminates the need for final inspection
005. Who is responsible for work performed using a permitted installer's permit number?
A. Only the property owner
B. The municipality in all cases
C. The permitted installer whose number is used
D. Only the equipment rental company
006. An installer requests an on-the-spot waiver for an unapproved bed location. What do the rules provide?
A. The inspector must allow it if groundwater is deep
B. Field waivers are prohibited
C. A waiver is automatic below 600 GPD
D. Any licensed excavator can authorize it
Independent study resource • Current rules checked October 2026 3
, NEW HAMPSHIRE | SEPTIC INSTALLER EXAM 1
007. Which event is required before approval to operate for a P.E.-required ISDS?
A. A contractor's private checklist without certification
B. Only a homeowner walk-through
C. Professional inspections during construction plus signed, sealed certification
D. A tank manufacturer's sales receipt only
008. The installer discovers that the approved EDA bed bottom must change. Which step is most consistent with
the 2026 rules?
A. Change it and explain at final inspection
B. Obtain a new construction approval through the designer's submission
C. Put the new elevation in the daily log only
D. Use the septic tank permit as authorization
009. If the construction approval has not led to an inspection request or approval to operate, when does it
ordinarily expire?
A. One year after approval
B. Six months after approval
C. Never
D. Four years after approval
010. Which statement about an NHDES final inspection is most accurate?
A. It permits uninspected backfill of the EDA
B. It makes approved plans optional
C. It is not a substitute for good construction oversight
D. It substitutes for all installer quality control
Independent study resource • Current rules checked October 2026 4
