Terms of service
Effective: October 20, 2026
These terms are an agreement between you and Nyphex LLC, 5900 Balcones Drive, Suite 100, Austin, TX 78731, for the use of WaterExamMath on waterexammath.comand inside AI assistants such as ChatGPT and Claude. By creating an account or using the service you accept them.
1. The service
WaterExamMath provides math practice problems with worked solutions, progress tracking, timed math sets, study plans and crew tools for the California drinking water operator exams (Treatment T1-T3, Distribution D1-D3). Answers are computed in software from the CA Exam Conversion Sheet published by the State Water Board (revised 4/30/2026). 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.
We work hard to keep every problem correct. If you believe an answer is wrong, email support@waterexammath.com and we will check it and fix it. Readiness figures are estimates from practice, not predictions of your result. Always check the State Water Board's operator certification page for current exam rules. WaterExamMath does not provide contact hours or continuing education units.
2. Your account
You must be at least 13 to use the service. If you are under 18, a parent or guardian must agree to these terms for you and make any purchase. You must give a working email address and keep your sign-in secure. One person per account. You are responsible for activity under your account.
3. Free use and the Pass Pack
- The free tier includes practice sets drawn from each grade's problem bank, timed sets, progress tracking and the on-screen plan, on our website and in the assistants we support.
- The Pass Pack is a one-time payment on our website that adds a printable study plan and a printable drill book, for every grade, for as long as we offer the service. It does not renew and is not a subscription.
4. The Crew Pack
- A Crew Pack is a one-time payment on our website by one person (the “owner”, usually a supervisor or instructor). It creates a crew with the number of seats shown at checkout, for 12 months from purchase. It does not renew.
- Anyone with the crew's invite link or code can take a free seat until all seats are used. Each member uses one seat; a seat is freed when a member leaves or the owner removes them, and 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). The owner can replace the invite link at any time.
- While the crew is active, the owner and every member get the Pass Pack features. When the 12 months end, or the purchase is refunded, those features end for everyone in the crew; each member keeps their own free account and practice data. If the owner deletes their account, the crew ends for every member.
- The owner sees each member's practice stats (answers and accuracy on assigned sets, and readiness and last practice date for the assigned grade) and the name the member chose, as described in our privacy policy. Owners may use this only to support the members' training, and must not use the service to make employment decisions based solely on these practice estimates.
- If you buy for an organization, you confirm you may do so on its behalf. Stripe emails an invoice after payment.
5. Payments and refunds
- Prices are shown before you pay and include any taxes stated at checkout. Payments are processed by Stripe.
- If a purchase isn't right for you, email support@waterexammath.com within 14 days for a full refund. A full refund ends what the purchase gave (for a Crew Pack: the crew, for every member); so does a chargeback decided in your favor. If the same Pass Pack is paid twice, the second payment is refunded automatically. This doesn't limit any right you have under the law where you live.
6. Acceptable use
Don't copy or republish the problem bank in bulk, scrape the service, share your account, interfere with the service or its security, or use it to break the law or any exam's rules. Printed class sets and drill books may be copied for the crew or class they were printed for.
7. Content
The problems, solutions and software are ours or our licensors' and are licensed to you for study and, for crews, training. The CA Exam Conversion Sheet and other cited sources belong to their owners.
8. AI assistants
When you use WaterExamMath inside an assistant, that assistant's own terms also apply, and the assistant decides how to present our results. We are not responsible for what the assistant says beyond the tool results we return.
ChatGPT is a trademark of OpenAI and Claude is a trademark of Anthropic. WaterExamMath is independent and not affiliated with or endorsed by either company.
9. Availability and changes
We work to keep the service available but don't promise it will be uninterrupted or error free. We may change features. If we shut the service down or remove a paid feature you bought, we will give you a full refund if you bought within the previous 12 months. We may update these terms and will post the new date above; material changes will be announced in the app.
10. Ending
You may stop using the service at any time and ask us to delete your account by emailing support@waterexammath.com; we do it within 30 days. Deleting your account ends any Pass Pack you bought and any crew you own (for every member), without a refund unless you are within the 14-day refund window. We may suspend or close an account that seriously or repeatedly breaks these terms, for example account sharing, bulk copying of the problem bank or payment fraud. If we close your account for any other reason, we will refund the Pass Pack in full, or the unused months of a Crew Pack.
11. Disclaimers and liability
The service is provided “as is” and “as available”, without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose and non-infringement. To the extent the law allows, we are not liable for indirect, incidental, special or consequential losses, including exam results, lost wages or lost opportunities. Our total liability for any claim is limited to the greater of what you paid us in the 12 months before the claim or US$50. Some places don't allow these limits, so they may not apply to you.
12. Law
These terms are governed by the laws of the State of Texas, without regard to conflict-of-law rules, except where the law where you live says otherwise. Disputes will be heard in the state or federal courts of the Texas county where Nyphex LLC is based, unless the law where you live lets you bring them where you live.