Magnus Jern

Co-founder of Tappwater

Magnus Jern (MCS) is a co-founder of Tappwater, a water researcher, and recognized authority on tap water and advanced water filtration technology. Over the past seven years, he has dedicated himself to understanding everything about tap water quality, filtration systems, and bottled water.

A passionate advocate for radical transparency, Magnus writes extensively on water contaminants, filtration methods, and debunking common myths, often uncovering surprising facts about water. His expertise is frequently sought by major media outlets, including the BBC and The Telegraph. As a firm believer in sustainable solutions, he drinks plenty of tap water—always filtered.

References about Magnus Jern: 

• El referente
• La Vanguardia