Privacy & Cookies

What we collect, and what we do not.

Plain words, no dark patterns. Last updated July 5, 2026.

Who runs this site

Water Filter Guide is operated by AC0 AI S.L.U. (NIF B26808741). Questions or rights requests can be sent to david@waterfilter.guide.

Newsletter data

If you enter your email, we use it to send the buyer guide and related Water Filter Guide emails. You can unsubscribe from any email.

Analytics

We use PostHog, Vercel Analytics, and Vercel Speed Insights to understand which pages work, where the site is slow, and which flows are confusing. We do not run ad networks or sell personal data.

Cookies

PostHog may set first-party analytics storage through our own domain. You can block or clear it in your browser. The site works without advertising cookies.

Your rights

Under the GDPR you can ask us to access, correct, delete, or restrict personal data where applicable. You also have the right to complain to the Spanish data protection authority.