Purified Still & Sparkling Water Dispenser

The Optimum S4 is unique in offering a choice of purified sparkling water, as well as purified hot, cold and ambient temperature water. It is hygienic, ergonomic, and one of the most technically advanced water dispensers available. 

CLEANCONTACT™ Anti-Microbial Surface

Organic anti-microbial coating helps maintain the cleanliness of touch-pad.

Sparkling Water

Refreshing sparkling water is readily available, in addition to hot, cold and ambient water.

Bullet-Proof Reliability

Scratch resistant panels and leak stop technology.


Ergonomic design for “no-bend” dispensing. Spacious dispense area for larger refillable bottles and mugs.


Our systems are designed to last a long time while never losing its performance.

Gallons/day Capacity
Plastic Bottles Avoided per day
Clearly Pure Water
0 %
The Optimum S4 is a tremendous refreshment solution for your workspace.
The Optimum S4 is one of our newest and most innovative products. It offers a wide selection of choice filtered water. The S4 is capable of dispensing cold, ambient and hot water, as well as a sparkling water option.

Your team will truly appreciate this dispenser! The Optimum S4 4-stage purification process removes sediment, chlorine, and bacteria to deliver some of the freshest tasting water possible. 

Technical Specs

Optimum S4
Weight72 lbs (33 kg)
Dimensions17.8” H x 14.2" W x 22.3" D
(44.5 cm H x 36.1 cm W x 56.6 cm D)
Cold Tank Capacity15.8 gallons/hr (60 liters/hr)
Sparkling Tank Capacity0.18 gallons (0.7 liters)
Hot Tank Capacity0.33 gallons (1.25 liters)
Dispense Area11.25” (28.6 cm)
Rated Voltage/ Frequency110v/60hz @ 4.9 amps
Power Consumption160 kWh/24 hours

Technology Features

Closed Loop

Closed Loop System

All our coolers are closed-loop systems, enhancing safety and water purity.

Sparkling Water

Sparkling Water

Serves up refreshing sparkling water on-demand

Anti Microbial Surfaces

Anti Microbial Surfaces

Our systems include anti-microbial surfaces to reduce contaminants possibly present.

Auto Tank Sanitizer

Auto Tank Sanitizer

Our coolers automatically sanitize the tank, helping eliminate microbiological contamination.


The Optimum S4 utilizes a 4-stage purification process that removes sediment, chlorine, and bacteria for the freshest taste possible.
Reduces Sediment like dirt, rust and silt

Sediment Filter

Reduces organics like chemicals, solvents and chlorine

Carbon Filter

Reduces Inorganics like lead, mercury and arsenic

Lead Reduction
Carbon Block

Carbon filter & coconut shell enhances taste and purity

Polishing Filter



Optimum Testimonials

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Denise Graham
On Ideas
The convenience factor alone makes the ig900 well worth the switch from bottled water. Add to that its all-in-one build and fresh taste and there’s really nothing like it. A definite win for everyone in the office.
Joseph Roos
Edgewell Personal Care
I want to thank all of you for the service. Edgar’s team was extremely professional and proficient. It is rare that I have the luxury of a contractor performing a service without me having to constantly correct them on safety and professionalism.
Gloria Smith
HR Employee Relations Director
Last year we had four workers’ comp claims due to lifting and replacing those heavy water jugs. And two employees slipped on spilled water from the jug change. Happy to report we have zero claims due to water this year. And everyone really loves the super chilled, fresh tasting water, too!
Donna Tibbits
Facilities Manager
We used the same water system for years, but decided to go for the free week trial. On the first day I had almost 100 emails from employees telling me how fresh and delicious the new water tasted.
Claudia Lewis-Robinson
Very friendly staff. When our system needs servicing they are there to do the job. Water is wonderful and the techs are great. Bottled water is a thing of the past! You need to try the new filtration system from them.
Aurelia Gervasi
Optimum Water Solutions is the best! From electrolyte enhanced water to ice machines, they've got everything you might want/need for your business. Plus, the units are very professional looking and the people who come to install them make sure to give you instructions on how best to operate them. All in all a great product!
Laura Bronkesh
Amazing product, service top notch. Love so much more than other delivery water services we used in the past. We don't need to haul water from my front step onto the holder. Highly recommend!
Brooke Stamas
Optimum Water Solutions is the perfect choice for our office. No more bottled water! The taste is great and the service is fantastic. Lezah Preston made the choice easy. She was informative and brief- which is important when you're busy. So far we love our unit!
Diane Brock
We like the water, ice and hot water convenience for the employees, and the satisfaction of knowing we are providing a superior alternative to tap water. Great service too!
Mark Larie
Maintenance Manager
I'm a maintenance manager for a large 3PI and I couldn't work with a better company. I use them at all my warehouse sites. They are always professional, courteous and on time. they do a very neat and professional job on the install, service and follow-ups, and are the best bunch of people to work with.
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