- What CPI Training Actually Covers
- Training Versus the Experience Requirement
- The Exam Structure You Are Training For
- Training Through the Seven Duty Areas
- Choosing Exam K or Exam L
- Where to Find Reliable Preparation Material
- A Domain-Based Sequencing Plan
- After You Pass: Enrollment and Maintenance
- Frequently Asked Questions
- CPI is the Certified Pump Installer credential from NGWA; there is no mandatory course, only experience, references, and passing exams.
- The minimum route is the Water systems general exam plus Exam K or Exam L, each 50 questions in 60 minutes.
- Each exam costs US$75 for members and non-members alike, so minimum exam fees total US$150.
- Applicants need 24 consecutive months of full-time drilling and/or pump-installation experience and must be at least 20.
What CPI Training Actually Covers
When people search for "CPI training," they often expect a single mandated course that leads to a certificate. The Certified Pump Installer credential, issued by the National Ground Water Association (NGWA), does not work that way. Certification rests on three things: documented field experience, two written professional references, and passing computer-based examinations delivered through PSI Services. Training, in this context, means everything you do to close the gap between what you already know from the field and what the exams ask.
That distinction matters for how you plan. A candidate with two years of hands-on pump work does not need to learn how to install a submersible pump from scratch. What they typically need is structured review of the parts of the trade they rarely touch on the job: perhaps system sizing math, code and standards language, or the administrative side of customer paperwork. If you are new to the credential, start with what CPI certification is and the CPI requirements overview before building a training plan.
Training Versus the Experience Requirement
The most important training you will do for this credential is on the job, because eligibility depends on it. NGWA's eligibility rules call for the following:
- Applicants must be at least 20 years old.
- 24 consecutive months of full-time drilling and/or pump-installation experience.
- Two written professional references from people not affiliated with your current employer.
- A completed application, a signed certification agreement, and an affidavit of legal standing.
NGWA membership is not required. Also note that CPI is an individual certification, not a company certification, and it does not replace a state license where one is required. If you work in a state with its own contractor licensing rules, the credential and the license are separate obligations. The full CPI requirements guide walks through qualification details.
Practically, this means your "training" calendar has two tracks running in parallel: accumulating qualifying experience, and preparing for the exams. Many candidates sit the exams while still finishing their experience window, which is workable because the application and enrollment steps are separate from the testing step. Just be aware of the timing rule covered later: enrollment must be completed within 12 months of passing the qualifying examination.
The Exam Structure You Are Training For
Effective preparation starts with knowing exactly what you will face. The structure below comes from NGWA's certification examination information.
| Item | Detail |
|---|---|
| Required exams | Water systems general exam, plus at least one specialty: Exam K or Exam L |
| Exam K | Water systems less than 100 gpm |
| Exam L | Water systems more than 100 gpm |
| Questions per exam | 50, multiple choice |
| Time limit per exam | 60 minutes |
| Passing standard | 70% on each exam |
| Fee | US$75 per exam, same for members and non-members |
| Delivery | Computer-based, closed-book, year-round at PSI centers; results available immediately |
| Completion window | Required exams passed within one 12-month period |
Two points are easy to misread. First, the minimum route adds up to 100 questions and two hours of testing, but these are two separately timed exams, not one combined 100-question test and not an uninterrupted two-hour sitting. Second, the US$150 minimum for exam fees is not an all-in certification cost; other steps carry their own expenses. See the CPI certification cost breakdown for the broader picture, and the CPI passing score guide for what the 70% standard means in practice.
Training Through the Seven Duty Areas
NGWA publishes a DACUM Research Chart for Pump Installers, developed June 12-13, 2003, that lays out the occupational duties of the trade. Seven duty headings from that chart make a useful skeleton for training. A caution on how to use them: they are job-task competencies tied to NGWA's preparation materials. They are not an official exam blueprint, they carry no published percentage weights, and they do not establish that every duty appears on every one of the General, K, and L exams. Treat them as a map of the territory, not a scoring formula. Our CPI exam domains guide goes deeper on each area.
Domain 1: Determine Client Needs
Training here is about translating a customer's situation into requirements an installer can design around.
- Practice identifying what a household, farm, or commercial user actually needs from a water system.
- Review how intended use affects pump selection and system configuration.
- Be ready for scenario questions that start with a customer description rather than a technical spec.
Domain 2: Assess Job Site
Site assessment is where field experience pays off, but exam questions test it in a structured way.
- Review the physical and environmental factors that influence an installation.
- Understand existing well and water-source conditions as inputs to every later decision.
- Know the safety considerations that apply before work begins.
Domain 3: Determine System Component Requirements
This is typically the most calculation-heavy area, and the one where closed-book preparation matters most.
- Practice sizing logic: matching pump capability to well and demand conditions.
- Review the supporting components of a complete water system, not just the pump.
- Rehearse the arithmetic by hand, since you cannot consult tables during the exam.
Domain 4: Prepare to Install the Pump
Preparation questions probe sequence and readiness.
- Know what must be verified and staged before equipment goes into the well.
- Review handling and inspection practices for pumps, piping, and electrical components.
- Understand why order of operations prevents costly rework.
Domain 5: Install Pump System
The core of the trade. Expect questions that mirror real installation decisions.
- Review installation procedures for the pump, drop pipe, wiring, and controls.
- Understand start-up checks and how to confirm a system is operating correctly.
- Keep Exam K and Exam L differences in mind, since system size changes equipment and practices.
Domain 6: Troubleshoot Existing Pump System
Diagnostic reasoning is its own skill and deserves dedicated practice.
- Work through symptom-to-cause chains for common failures.
- Practice distinguishing electrical problems from hydraulic and mechanical ones.
- Review the logical order of diagnostic steps rather than memorizing isolated fixes.
Domain 7: Perform Administrative Activities
Installers often neglect this area because it is not hands-on, but it appears in the duty chart.
- Review documentation, recordkeeping, and customer communication practices.
- Understand the professional-conduct expectations tied to certification.
- Note that NGWA's 2019 preparation guide omits this duty, so confirm current emphasis rather than assuming it appears on every exam.
Choosing Exam K or Exam L
Every CPI candidate takes the Water systems general exam, then picks at least one specialty. The dividing line is flow: Exam K covers water systems less than 100 gpm, and Exam L covers systems more than 100 gpm. Your choice should reflect the work you do and intend to keep doing. A residential and light agricultural installer will usually gravitate toward Exam K. Someone working on municipal, industrial, or large irrigation systems will likely need Exam L.
Training implications follow directly. The general exam rewards breadth across the whole trade. The specialty exam rewards depth in your flow range, including the equipment, controls, and design considerations that differ at larger scale. If you plan to take both specialties, sequence them so the general exam is behind you first and each specialty gets its own focused review block. Keep the 12-month window in mind: all required exams must be passed inside a single 12-month period, so do not stretch a two-specialty plan across a long timeline.
Where to Find Reliable Preparation Material
Start with NGWA's own materials, since they come from the credential's issuer. The DACUM Research Chart for Pump Installers shows the duty structure of the occupation, and the Exam Preparation Success Guide (May 2019) provides a preparation reference matrix and states the closed-book policy. The guide groups material into six preparation categories and varies its reference coverage by examination, so use it to see which references apply to your specific exam rather than assuming one reading list fits all three.
Beyond issuer materials, build your own reference notes from the equipment manuals, codes, and standards you already work with, and then drill them closed-book. Our CPI study guide and one-page CPI cheat sheet are useful for consolidating key facts, and you can test recall under realistic conditions with the CPI practice tests.
A Domain-Based Sequencing Plan
Rather than a generic weekly template, sequence your training around where installers tend to be weakest. The plan below assumes you already have field experience and are preparing the General exam plus one specialty. Adjust the length to your own timeline.
Calculation-heavy foundations (Domain 3)
- Start with component requirements and sizing, since closed-book math needs the most repetition.
- Rebuild formulas and unit conversions from memory until they are automatic.
Client needs and site assessment (Domains 1-2)
- Work scenario-style questions that begin with a customer or site description.
- Tie each scenario back to the sizing work from the first block.
Preparation and installation (Domains 4-5)
- Review procedure and sequence, then apply it to your chosen specialty, K or L.
- Note where small-system and large-system practices diverge.
Troubleshooting and administration (Domains 6-7)
- Practice diagnostic chains, then review documentation and professional-conduct topics.
Timed, closed-book rehearsal
- Simulate 50 questions in 60 minutes per exam, with no references.
- Return to any domain where your practice scores sag.
Doing the math-heavy domain first is deliberate: arithmetic fluency decays quickly without practice, and every later domain leans on it. For a sense of how demanding candidates find the material, read how hard the CPI exam is, and check exam dates and scheduling before locking in a test appointment. Because PSI centers offer testing year-round, you can usually schedule when you feel ready rather than waiting for a fixed window.
After You Pass: Enrollment and Maintenance
Training does not end at the exam. Certification enrollment must be completed within 12 months of passing the qualifying examination, so do not let paperwork lag behind your results. Once certified, you enter a maintenance cycle with its own requirements.
- Annual continuing education: seven continuing education points (CEPs) per year. CEPs must not be relabeled as seven classroom hours; they are a point system, so check NGWA's guidance on what activities earn points.
- Renewal filing: a renewal fee and an affidavit addressing professional standing and required licensure.
- First-year timing: the initial certificate expires December 31 of the year following certification, and newly certified individuals earn and report their first CEPs in that following year.
- Deadline: renewal requirements are due December 31.
Maintenance is also where ongoing training pays off. Choose CEP activities that deepen areas where you are thin, such as the specialty you did not test in or new equipment and controls. To judge whether the whole path suits your career, see whether the CPI certification is worth it, the CPI salary guide, and the CPI jobs overview.
Frequently Asked Questions
NGWA's eligibility requirements list experience, references, an application, a certification agreement, and an affidavit, not a mandatory course. Preparation is up to you, though NGWA's Exam Preparation Success Guide is a sensible starting point.
At minimum, the Water systems general exam plus Exam K (less than 100 gpm) or Exam L (more than 100 gpm). Each has 50 multiple-choice questions, a 60-minute limit, and a 70% passing standard, and all required exams must be passed within one 12-month period.
Exam fees are US$75 per examination for members and non-members, so the minimum two-exam route is US$150 in exam fees. That figure excludes other certification costs; see the certification cost guide for the fuller picture.
No. Testing is computer-based and closed-book at PSI centers, with results available immediately. Your preparation should focus on recall and hand calculation rather than quick lookup.
No. NGWA membership is not required, and exam fees are the same for members and non-members. Renewal pricing, however, differs by membership status on the currently linked renewal form.