Environmental PE ยท April 2026 CBT Spec

Study what you need.
Skip what you don't.

Focused PDF study guides, bundles, and practice problems for the Environmental PE exam, written by a practicing engineer who passed on the first try in under 80 hours. Every guide, bundle, and problem set is targeted to what actually shows up on exam day, so you can pass in a fraction of the hours too.

Written by Matt Bentley, PhD, PE · Environmental engineer & university instructor · Passed Env. PE Feb 2026
Drinking Water & Water Resources study guide cover
New · April 2026
PDF · 38 pages · instant download
Why Confluence

You don't need hundreds of hours of content.
You need the right content.

Most PE prep courses cost $1,500+ and cover everything, whether you need it or not. Study what you need. Skip what you don't.

01 · Focused

30–40 pages per topic.

Formulas, worked examples, and regulatory tables. No filler, no generic test-taking advice you've already heard.

02 · Efficient

Built for working engineers.

Structured for 60–90 days of targeted prep you can actually do while holding down a full-time job.

03 · Exam-aligned

April 2026 CBT spec.

Including the new Sustainability section that most existing prep materials haven't caught up to yet.

The full series

Six guides. One exam. Pick what you need.

Get notified when new guides launch →
Practice problems

One free problem a week.
Or 100 tailored to you, every month.

Most prep banks recycle the same problems every candidate has already seen. Ours adapt to your weak spots, so every minute of practice moves the needle.

Free · This week Drinking Water Medium

A rapid sand filter operates at a loading rate of 5 gpm/ft². If the design flow is 2.5 MGD, what is the required filter area?

A256 ft²
B347 ft²
C348 ft²
D502 ft²
New problem every Monday · No signup required
Example · What you'd type in the generator
You "Give me 10 problems on activated sludge design, I keep missing SRT and F/M ratio questions."
AI Generates 10 exam-format problems targeting exactly those calculations, with worked solutions.
Confluence Practice · Membership

Practice problems built around your weaknesses, not someone else's syllabus.

Prompt the generator like you'd ask a tutor. It builds exam-style problems trained on real PE formats, targeted exactly where you need the reps.

$30 / month Month-to-month. Cancel anytime, most candidates only study 2–3 months.
  • 100 custom problems / month included, generated on demand, in exam format. Additional problems available on a per-use basis.
  • Prompt your weak spots. "More on pump hydraulics." "Harder air dispersion." It listens.
  • Trained on real PE formats, units, traps, distractors, and the way NCEES asks questions.
  • Full worked solutions for every problem, with references back to the guides.
Join the waitlist → Launching late 2026
Matt Bentley, PhD, PE
Written by

Matt Bentley, PhD, PE

Environmental engineer, university instructor, and Technical Director at a water treatment chemical company in Colorado. Passed the Environmental PE in February 2026, on the first try, in under 80 hours. He built these guides from the materials he wished had existed when he was preparing.

PhD, Environmental Engineering Licensed PE · Colorado University Instructor Passed Env. PE · Feb 2026
One-on-one study prep

Need a study plan built for you?

Self-study materials work for most candidates. But if you want structured guidance from someone who has been through the exam, one-on-one study prep may be a better fit.

Matt works directly with a small number of Environmental PE candidates to build a personalized study plan and provide weekly coaching sessions. Each engagement starts with a free 15-minute intro call to talk through where you are, what you're preparing for, and whether this is the right approach for your situation.

No two study plans look the same. Pricing and scope are tailored to your timeline and needs.

To get started, send Matt an email with:
  • Which exam you are preparing for
  • When you plan to take the exam
  • Where you are in the study process (just starting, mid-prep, retaking, etc.)
  • Any specific areas you want help with
Email Matt
Typically responds within 2–3 business days.