Last updated: October 6, 2026

Hydrology University ("we," "us," or "our") operates hydrologyuniversity.com (the "Site"), an editorial website that reviews and compares water-filtration and water-treatment products. This Privacy Policy explains what information we collect when you visit the Site, how we use it, who we share it with, and the choices you have.

Information We Collect

Information you provide voluntarily. If you sign up for our email list (for example, to receive our free book) or contact us by email, we collect the information you give us — typically your email address, your name if you include it, and the contents of your message.
Water-testing inquiries. If you contact us about water testing, we collect the contact information and details you choose to provide so we can respond. Hydrology University is not accepting water-test-kit orders while provider details are being confirmed.
Information collected automatically. Like most websites, our servers automatically log basic technical information when you visit, such as your IP address, browser type, operating system, referring pages, the pages you view, and the dates and times of your visits. We use this information in aggregate to understand how the Site is used and to keep it secure.
Cookies and similar technologies. The Site and the affiliate networks we work with may set cookies to measure traffic and attribute purchases made through our links. You can block or delete cookies in your browser settings; the Site will still work without them.

How We Use Your Information

To send you emails you have requested, such as our newsletter or free book.
To respond to questions and messages you send us.
To analyze Site traffic and improve our content.
To detect, prevent, and respond to abuse or security incidents.

Hydrology University is a publisher and referral source, not the seller of products linked from the Site. Product purchases after following an affiliate link take place with the third-party retailer or manufacturer. That seller handles checkout, payment, fulfillment, and returns under its own terms and privacy policy.

Affiliate Links and Third Parties

The Site contains affiliate links. When you click one, the affiliate network (such as Impact or Rakuten Advertising) may set cookies or receive technical information about the click so that a resulting purchase can be attributed to us. We do not receive your personal purchase details — only anonymized commission reporting. See our Affiliate Disclosure for more about how these relationships work.

Sharing of Information

We do not sell or rent your personal information. We share information only with service providers that help us operate the Site (such as email delivery and hosting providers), when required by law, or to protect the rights and safety of the Site and its visitors.

Data Retention

We keep email subscriber information until you unsubscribe. Inquiry correspondence and any records we already hold are retained as needed to respond to requests and meet applicable record-keeping obligations. Routine server logs are retained for a limited period for security and analytics purposes.

Your Choices and Rights

Every marketing email we send includes an unsubscribe link.
You may request access to, correction of, or deletion of the personal information we hold about you by emailing legal@hydrologyuniversity.com.
You can control cookies through your browser settings.

Children's Privacy

The Site is not directed at children under 13, and we do not knowingly collect personal information from children.

Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page.

Contact Us

Questions about this policy? Email legal@hydrologyuniversity.com.