Mayday Industries 55 Gallon Water Preserver – 5 Year by Mayday Industries

Mayday Industries 55 Gallon Water Preserver – 5 Year by Mayday Industries

Q: Does 1 drop = 1 gallon. I have 12, 7 gallon water containers I'd like to treat

Hello, Please add 8 drops of Water Preserver to an empty container for each gallon of water. EX: For a 5 gallon container: (5 gal) x (8 drops/gallon) = 40 drops.

Q: What is the expiration date?

The expiration date is one year from the manufacture date. Amazon will not have that information on file.

Q: How can I check that its working? I have a water tester and it reads nearly 500 ppm's even after treating it.

I'm not sure what's measuring 500 ppm - so please be more specific. Your option to this if you don't like stuff in water or the measurement of some compound is to get a capable sized PUR water filter - i.e for camping ... then you add nothing to your water

Q: I am having trouble with my expensive new carbon filters smelling and growing bio film in less than a weeks time. Will this help?

No, The water preserver is only if you are storing water for long periods of time.

4.6/5

Product ID: 730791748

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Details

Brand
HGFLMR
Capacity
21 g
UPC
788581660928

⏳5-year long-lasting protection

⚖️Ultra-light 41g compact design

🛢️Preserves 55 gallons of water

Frequently Bought Together

55 Gallon Water Preserver Concentrate (5 years) Water Treatment Drops - Water Treatment For Drinking Water - Mayday Emergency Drinking Water - Defiance Fuel Water - Earthquake Water, Emergency Storage

Aquatabs 397mg Water Purification Tablets (100 Pack). Water Filtration System for, Camping, Boating, Emergencies, Survival, RVs, and Marine-Use. Easy to Use Treatment and Disinfection.

Augason Farms 55-Gallon Water Storage Barrel, BPA Free, Emergency Water Supply

Description

🛡️ Preserve your peace of mind—water that lasts as long as your plans.

TRUSTED DURABILITY - Non-discontinued, industry-standard part WA99 ensures you’re investing in a proven solution.
ZERO BATTERY HASSLE - No batteries needed—pure, reliable chemical preservation that works silently and efficiently.
FEATHERLIGHT COMPACT - At just 41 grams and pocket-sized, it’s easy to store and handle without bulk.
ULTIMATE WATER LONGEVITY - Keeps your water fresh and safe for up to 5 years—no compromises on quality.
MASSIVE CAPACITY COMPATIBILITY - Designed specifically for 55-gallon barrels, perfect for serious preppers and eco-conscious pros.

The Mayday Industries 55 Gallon Water Preserver is a lightweight, compact chemical treatment designed to keep 55 gallons of water fresh and safe for up to 5 years. Ideal for emergency preparedness, long-term storage, and professional use, it requires no batteries and comes as a reliable, industry-trusted solution.

Specifications

Part number	WA99
Item Weight	41 g
Product Dimensions	13.72 x 6.86 x 4.57 cm; 41 g
Is Discontinued By Manufacturer	No
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	13.7 x 6.9 x 4.6 cm

Have a Question? See What Others Asked

Does 1 drop = 1 gallon. I have 12, 7 gallon water containers I'd like to treat

What is the expiration date?

How can I check that its working? I have a water tester and it reads nearly 500 ppm's even after treating it.

I am having trouble with my expensive new carbon filters smelling and growing bio film in less than a weeks time. Will this help?

Common Questions

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