Unlock a true eco-conscious lifestyle

with HydroCap

Fits all major brands of wide-mouth bottles.
The Game Changing Sustainable

Hydration Accessory

HydroCap is a replacement lid for wide mouth bottles like Hydro Flask, Iron Flask, etc. Engineered to purify water and self-clean bottle with spatially placed dual 20 mW UV-C LEDs.

Best in Class

With 100,000,000X purification against bacteria, viruses, spores, pathogens, etc.


Dual mode water purification • Bottle self-cleaning • Hydration reminders

Supercharge Your Favorite Bottle!

Fits all major brands of wide-mouth bottles.

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Think HydroCap

For Sustainable Hydration

Enrich your personal hydration journey like never before.

Packed with a ton of tech to deliver
Ultimate Performance

Patented spatially placed UV-C LEDs. Intelligent power management system. World-class rechargeable Li-ion battery. Non-contact near-field smart safety sensor. Patented UV-C shield. Tactile activation button. RGB ring LED indicators

Port-less Magnetic Charger

360° waterproof for maximum safety. Lack of ports protects the electronics from water damages.

Bottle Self-Cleaning

Powerful UV-C rays blast inside your bottle every hour for a few seconds to keep your bottle stink-free.


Compatible with Various Brands and Sizes

Perfect replacement lid for your wide mouth Hydro Flask, Iron Flask, Simple Modern, Takeya, MIRA, Klean Kanteen, FIFTY/FIFTY, Hydro Cell, Thermoflask, Gold Armour, and many others.

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Brand and Sizes 10 oz 12 oz 14 oz 16 oz 18 oz 20 oz 22 oz 24 oz 32 oz 40 oz 64 oz 84 oz 128 oz
Hydro Flask Wide Mouth
Simple Modern - Summit
Klean Kanteen
Hydro Cell
Gold Armour
Iron Flask
Sustainable Hydration!
Guaranteed water safety on your next refill.

One HydroCap

Destroys >100M germs at a click of a button.

Provides zero-waste purification system.

Equals 16K gallons of purified water.

Saves >20,000 single-use plastic bottles.

Performs >80,000 automatic bottle cleaning cycles.

WAATR at Adventures
Sustainable hydration no matter where you are.
WAATR at Home
Purified water from a self-cleaning bottle.
WAATR at School
Ensure confidence on your next refill.
WAATR at Work
Part of your sustainable lifestyle.

Lifetime Warranty

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Easy Returns

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