WaterExamMath support

Email support@waterexammath.com. We answer within one business day.

Getting started

Create a free account.
Pick the grade you're preparing for (T1, T2, T3, D1, D2 or D3). You can switch in Settings; each grade keeps its own progress.
Set your exam date under Plan to get a day-by-day plan.
Practice. Problems you miss come back later; weaker topics get more problems. Each answer shows the worked solution and the conversion sheet line it uses.
When your readiness reaches the target, take a timed set to practice under time pressure.

Think an answer is wrong?

Answers are computed in code from the CA Exam Conversion Sheet (revised 4/30/2026). If one looks wrong, use the “Report this problem” link under every problem: it opens an email to support@waterexammath.com with the problem's id in the subject, so add what you think is wrong and send it. You can also email us with the problem text (or its id from the assistant). We'll check it the same day.

Use WaterExamMath in ChatGPT or Claude

Claude: Connect WaterExamMath to Claude opens Claude's “Add custom connector” dialog with the address filled in. Choose “Sign in when needed” and keep “Use Claude's published identity”. By hand: Customize → Connectors → Add custom connector, address https://waterexammath.com/mcp.
ChatGPT: open chatgpt.com/plugins, click the plus button, then “Add custom MCP server”. Server URL https://waterexammath.com/mcp, authentication “OAuth or no authentication”, then “Create as a plugin” and install it. In a chat, type @ and pick WaterExamMath. Listings in both directories are pending review.
Sign in with your WaterExamMath account and approve access.
Ask, for example: “Quiz me on 5 D2 math problems”, “How ready am I for T2?”, “Plan my study for an exam on March 1” or “Start a timed set”.

If you add it as a custom connector, enter the address exactly as https://waterexammath.com/mcp (no trailing slash).

Your progress is the same everywhere: answers in ChatGPT or Claude count on the website too. To disconnect, remove WaterExamMath in the assistant's settings.

How readiness works

Each topic's readiness is your recent accuracy there, with recent answers counting more, scaled down until you've answered at least 8 problems in it. Overall readiness weights the topics like the timed set. It's an estimate for the math portion only, not a prediction of your exam score.

Crews (for supervisors and instructors)

Buy a Crew Pack on the Crew page. Your crew appears there within a minute.
Share the invite link or code, or email it from the crew page. Each person who joins takes a seat.
Assign a set: grade, topics, number of problems and due date. Open the set for its readiness table and a printable class set with the answer key on separate pages.
Members choose the name you see and can leave at any time. You see practice stats only (for each set they assign: how many problems you answered on its topics since it was assigned, and your accuracy on them; for that set's grade: your readiness per topic and overall, and the date you last practiced, based on all your practice on that grade (including practice before you joined)), never your email address, your individual answers, your exam date or anything else in your account.
Each seat can change hands once over the 12 months: at most twice the seat count of different people can join. Someone who rejoins doesn't count again.
Joined a crew by mistake? Open Crew and press Leave crew.

Pass Pack, Crew Pack and refunds

Both are one-time purchases on the website. If one didn't turn on within a few minutes, or you want a refund within 14 days, email support@waterexammath.com.

Your data

Erase your progress for a grade in Settings at any time. To delete your account entirely, email us. See the privacy policy for details.

WaterExamMath is independent practice software. It is not affiliated with, endorsed by or connected to the California State Water Resources Control Board. It covers the math portion of the drinking water operator exams only, not the whole exam, and passing is not guaranteed.