How She Built A Water Brand Disrupting A 1B$ Market | Clara Sieg  episode artwork

EPISODE · Jun 19, 2026 · 46 MIN

How She Built A Water Brand Disrupting A 1B$ Market | Clara Sieg

from One Day with Jon Bier · host Jon Bier

Sponsored By:→ Neuro | Go to ⁠https://getneuro.com⁠ and use code ONEDAY at checkout for 15% OFF your entire order.You're optimizing your supplement stack. You're tracking your macros. You're sleeping eight hours. And you're washing it all down with water that's sitting in plastic that's been baking on a truck in 100 degree heat for three weeks.Jon Bier sits down with Clara Sieg — co-founder of Loonen and former venture investor — for a conversation about the most overlooked input in the entire wellness conversation. Water. The category that built its entire identity on pictures of waterfalls and asked consumers to just trust them. Clara got pregnant, started paying attention, and found out that no natural source in the US she tested was entirely free of contaminants. So she built something that paired spring sourcing with stainless steel processing, physical membrane filtration, and NSF certification — and put it in glass. Every time.This isn't fear mongering. It's just information and most people don't have it.In this episode:• Why 50% of US tap water tests positive for lead and forever chemicals and why the bottled water sitting in plastic on a hot truck might not be solving the problem you think it is• How Clara went from a panic during pregnancy to six months testing water sources across the US, and why every single one had a footnote• What it actually takes to build a cleaner water brand in the most competitive, public-company-dominated beverage category on the shelf and why being naive enough to start was an advantage.Find Clara & Loonen:• Clara on Instagram: https://www.instagram.com/sieg/• Loonen: https://loonen.com/• Loonen on Instagram: https://www.instagram.com/loonenwater/Timestamps:0:00 — Intro1:12 — Why water is the real foundation of wellness2:15 — How bad is US tap water?4:14 — The bottled water myth: microplastics and leaching7:08 — Jon's $12K arsenic wake-up call9:32 — What plastic bottles actually do to your water12:46 — How Lunan sources and filters its water16:33 — Sponsor: Neurogum17:24 — The spring water myth21:46 — "Pure but proven": NSF and 350+ contaminant testing24:03 — The organic-certification parallel & Clara's mom27:50 — Why this is personal: IVF and fertility29:18 — Building an explosive brand & the bottle design38:06 — The Loon, the name & understated branding42:26 — What's next: single-serve, national rollout, flavors

Sponsored By:→ Neuro | Go to ⁠https://getneuro.com⁠ and use code ONEDAY at checkout for 15% OFF your entire order.You're optimizing your supplement stack. You're tracking your macros. You're sleeping eight hours. And you're washing it all down with water that's sitting in plastic that's been baking on a truck in 100 degree heat for three weeks.Jon Bier sits down with Clara Sieg — co-founder of Loonen and former venture investor — for a conversation about the most overlooked input in the entire wellness conversation. Water. The category that built its entire identity on pictures of waterfalls and asked consumers to just trust them. Clara got pregnant, started paying attention, and found out that no natural source in the US she tested was entirely free of contaminants. So she built something that paired spring sourcing with stainless steel processing, physical membrane filtration, and NSF certification — and put it in glass. Every time.This isn't fear mongering. It's just information and most people don't have it.In this episode:• Why 50% of US tap water tests positive for lead and forever chemicals and why the bottled water sitting in plastic on a hot truck might not be solving the problem you think it is• How Clara went from a panic during pregnancy to six months testing water sources across the US, and why every single one had a footnote• What it actually takes to build a cleaner water brand in the most competitive, public-company-dominated beverage category on the shelf and why being naive enough to start was an advantage.Find Clara & Loonen:• Clara on Instagram: https://www.instagram.com/sieg/• Loonen: https://loonen.com/• Loonen on Instagram: https://www.instagram.com/loonenwater/Timestamps:0:00 — Intro1:12 — Why water is the real foundation of wellness2:15 — How bad is US tap water?4:14 — The bottled water myth: microplastics and leaching7:08 — Jon's $12K arsenic wake-up call9:32 — What plastic bottles actually do to your water12:46 — How Lunan sources and filters its water16:33 — Sponsor: Neurogum17:24 — The spring water myth21:46 — "Pure but proven": NSF and 350+ contaminant testing24:03 — The organic-certification parallel & Clara's mom27:50 — Why this is personal: IVF and fertility29:18 — Building an explosive brand & the bottle design38:06 — The Loon, the name & understated branding42:26 — What's next: single-serve, national rollout, flavors

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How She Built A Water Brand Disrupting A 1B$ Market | Clara Sieg

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Sponsored By:→ Neuro | Go to ⁠https://getneuro.com⁠ and use code ONEDAY at checkout for 15% OFF your entire order.You're optimizing your supplement stack. You're tracking your macros. You're sleeping eight hours. And you're washing it all down with...

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