HydroCap: Pure Hydration, Simplified!

The ultimate bottle lid with UV, ensuring easy access to clean drinking water while keeping your wide-mouth bottle pristine. Experience the new standard in hydration with unmatched convenience and durability in one innovative product. Transform your water intake today!

Shipping Tips

Order now and ship by Monday, September 25

Shipping Tips

Order now and ship by Monday, September 25

HydroCap - Cap only

UV Replacement Lid

Regular price $99 Sale price $74.25
Hydration reminder
Third-party compatibility
DUAL UV-C self-cleaning


  • Gold Armour
  • Hydro Cell
  • Hydro Flask Wide Mouth
  • Iron Flask
  • Klean Kanteen
  • MIRA
  • Simple Modern - Summit
  • Takeya
  • Thermoflask
Check your bottle compatibility here

Order now and ship by Monday, September 25

30 Day Satisfaction
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10 Year Warranty.
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  • A Dual UV-C LED replacement cap for wide-mouth bottles like Hydro Flask, Iron Flask, Simple Modern, Mira, Hydro Cell, ThermoFlask, FIFTY/FIFTY, TAKEYA, and many others
  • 60 seconds to purified water. Chemical-less and filter-less purification technology designed to last 10 years.
  • Ideal for safety against bacteria, viruses, spores, and pathogens. UV technology is not suitable for chemical, metal and particulate contaminants
  • Automatic self-cleaning keeps bottle odor free
  • Waterproof charger ensures ultimate safety
  • Lifetime warranty


HydroCap was designed in response to studies revealing that reusable water bottles are dirtier than dog toys. By incorporating advanced self-cleaning technology powered by DUAL UV-C LEDs. HydroCap ensures your favorite bottle remains clean for use, providing a worry-free hydration experience and a cleaner alternative for your daily water intake.

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Great Value For the Money

"Overall, I think the HydroCap offers great value for money. It has allowed me to go bush walking with my kids and rather than carrying a full gallon of water (3-4L) I can get away with carrying just 32 oz and then fill up at convenience"


Ryan McLean

Hunting Waterfalls




Utilizes 2X 20mW powerful ultraviolet (UV-C) light to eliminate 99.9999% E.Coli from water in Pro Mode (3 minutes)

Eliminates 94% NTM from water in Pro Mode (3 minutes)

Access E.Coli study report here.

Access NTM study report here.

Pro Self-Cleaning

UV-C LED activates for 20 seconds automatically every hour to keep your bottle odor-free.

Hydration Reminder

Optional hydration reminder intelligently reminds you to stay hydrated.

Smart Charging

Magnetic charging for ergonomic look & safety against water leakages. USB end plugs into the wall adaptor & charger end attaches to the bottle cap.

Long-Lasting Battery Life

Rechargeable lithium-ion battery lasts up to 7 days on a single charge. Built-in with over-charge & over-discharge protection to ensure safety.

Multi-Color Indicator LEDs

Ensures easy visualization of various functions.

10-Year Warranty

Rest assured with our comprehensive 10-Year Warranty, a testament to our confidence in the product's durability and our commitment to your long-term satisfaction.

Upgrade to the HydroCap UV water treatment system today and experience the benefits of clean, convenient, and great-tasting water for years to come.


Clean and convenient drinking water

The powerful, patented spatially-placed UV-C LED lights ensure clean hydration for years to come.

Self-Cleaning Water Bottle

Effortless maintenance with UV-C technology. Say goodbye to scrubbing. Our system auto-activates a 20-second UV-C LED process every hour, ensuring an odor-free bottle.

Convenience On-The-Go

Enjoy easy access to clean water on-the-go with our leak-proof design, and experience convenient portability with the rainbow handle.


Perfect companion for camping, hiking, and travel with its durable and versatile design.

Leak-proof and portable

Leak-proof design, allowing you to carry it anywhere without worrying about spills, making it perfect for those with an active lifestyle.

3rd party compatibility

Fits most wide-mouth water bottles, giving you hundreds of design, size & color options. Enjoy the benefits of self-cleaning and UV water treatment at your fingertip. A Perfect replacement Hydro Flask lid!

Environmentally friendly

By using a Zero-Waste self-cleaning bottle and UV water treatment system, you're reducing plastic waste and contributing to a more sustainable future.


Save money with the cost-effective solution to buying bottled water.


A seamless blend of technology, convenience and security for travelers. Stay hydrated on the go while complying with TSA carry-on regulations. Simply ensure your HydroCap bottle is empty before passing through security checks, and enjoy hassle-free hydration throughout your journey.


HydroCap, featuring a compact and sleek design, has earned the prestigious Good Design Award. This innovative travel hydration solution offers both convenience and aesthetic appeal, making it the ideal choice for today's on-the-go lifestyle.


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Effortlessly Enhance Your Hydration Experience with HydroCap

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Although WAATR greatly values customers sharing their personal experiences with our products, it's important to note that these reviews are not officially endorsed by WAATR. They represent individual experiences and should not be considered as official product claims or endorsements from the company.