Why Is There Lead in Stanley Cups and Other Reusable Water Bottles? (Updated) Posted on February 8, 2024 By Charlielikes Stanley says it uses some lead in its “industry-standard” manufacturing process, so we asked if other brands do the same. Tech Tags:“there, 'is, ‘why, and, bottles, cups, in, lead, other, reusable, stanley, tech, technology, updated, water!’