Oasis has been a trusted name in water treatment since Founded 1910, based in United States. The brand is particularly known for Commercial and institutional drinking water coolers, fountains, and bottle fillers with over a century of manufacturing. Oasis is positioned in the mid-range price tier, making it a solid mid-range option for water treatment.

Oasis Water Treatment
Oasis manufactures drinking water coolers, water fountains, bottle fillers, and point-of-use water dispensers for commercial, institutional, and outdoor applications. Their products include wall-mount and freestanding coolers, bi-level ADA-compliant fountains, and bottle filling stations with filter monitoring.
Oasis Water Treatment Product Lines
Why Choose Oasis for Water Treatment?
Oasis stands out in the water treatment market because of Commercial and institutional drinking water coolers, fountains, and bottle fillers with over a century of manufacturing. Their products carry 3 industry certifications, including UL Listed, NSF/ANSI 61, ADA Compliant, giving homeowners confidence in quality and compliance. Oasis backs their water treatment with a 5-year limited warranty on most products, which shows commitment to long-term reliability. With 5 dedicated product lines — Wall-Mount Coolers, Freestanding Coolers, Bottle Fillers, Outdoor Fountains, and more — there's a Oasis option for virtually every need and budget.
Certifications & Standards
Warranty & Support
Where to Buy Oasis Water Treatment
Water Treatment How-To Guides
View All →How to Install a Reverse Osmosis System
Install an under-sink reverse osmosis system for the cleanest drinking water at home -- feed water connection, filter mounting, storage tank, drain saddle, dedicated faucet, and the critical initial flush.
How to Test Your Water Quality
Test your water with DIY strips, reagent kits, or certified lab analysis -- what to test for, how to collect samples, how to read results, and what treatment actually fixes common contaminants.
How to Change Water Filter Cartridges
Swap out sediment, carbon, and specialty cartridges in whole-house and under-sink systems -- the right filters, the right schedule, and the correct order for multi-stage setups.
Common Water Treatment Problems
View All →Bad Taste or Odor in Water
Water that tastes or smells off -- chlorine, rotten eggs, metallic, musty -- has a specific cause for each type. Identifying what it tastes or smells like is the fastest path to the right fix.
Hard Water Buildup
White, chalky deposits on everything -- faucets, shower heads, glass doors, inside pipes and water heaters. Calcium and magnesium restrict flow, kill efficiency, shorten appliance life. About 85% of US homes have hard water.
Low RO System Output
RO system filling slowly, weak trickle, or running out of water? Clogged pre-filters, worn membrane, low feed pressure, or waterlogged tank. Most fixes are filter replacements or pressure adjustments.
Water Treatment Types
View All →Water Treatment Buying Guides
View All →Oasis Water Treatment FAQ
Is Oasis a good brand for water treatment?
Oasis International is an American manufacturer of drinking water coolers, fountains, and bottle fillers headquartered in Columbus, Ohio. Founded in 1910, Oasis is one of the oldest and most recognized names in commercial and institutional drinking water solutions. Their products are found in schools, offices, hospitals, and public buildings across North America.
What warranty does Oasis offer on water treatment?
Oasis offers 5-year limited warranty on most products.
Where is Oasis made?
Oasis is based in United States, headquartered in Columbus, Ohio.
What price range does Oasis water treatment fall into?
Oasis is positioned in the mid-range price tier for water treatment. They balance quality and affordability well.
What water treatment product lines does Oasis offer?
Oasis offers 5 water treatment product lines: Wall-Mount Coolers, Freestanding Coolers, Bottle Fillers, Outdoor Fountains, Bi-Level ADA Fountains.
What certifications does Oasis have for water treatment?
Oasis holds 3 certifications including UL Listed, NSF/ANSI 61, ADA Compliant.
