Transform Your Bottle Into a Self-Cleaning Bottle.
Game Changing

HydroCap UV Lid

Ditch your straw lid and welcome the UV replacement lid that's cleaning your bottle & purifies your water. Powered by patented spatially placed dual 20 mW UV-C LEDs.

UV Purification

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

UV Bottle Cleaner

Automatic touchless bottle cleaning
cap with powerful dual UV-C LED lights.

HydroCap UV Replacement lid
HydroCap UV Replacement lid
The Prefect Replacement Lid to

Supercharge Your Favorite Bottle!

Fits all major brands of wide-mouth bottles.

Shop HydroCap UV LID
Think HydroCap

For a Cleaner Flask

No more wondering how to clean your flasks,
HydroCap is your answer.

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.


Single charge lasts all week. Port-less magnetic
charger ensures 360° waterproof for ultimate safety.

Sustainable Design

zero-replaceable filter design make HydroCap
a sustainable solution for zero-waste purification.

HydroCap Compatible With

Hydro Flask, Iron Flask, Simple Modern,

Takeya, MIRA, Klean Kanteen, FIFTY/FIFTY, Hydro Cell, Thermoflask, Gold Armour, and many others. Check all the compatible models & sizes below.

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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.