iSpring RO100 5-Stage 100 GPD Under Sink Reverse Osmosis Drinking Water Filtration System 1:1 Pure to Waste Ratio with US Made Filters
About this item
- 5-Stage reverse osmosis water filtration. Capable of removing up to 99% of over 1,000 contaminants, including PFAS, lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more. Comes with US made filters and RO membrane.
- iSpring RO100 rated at 100 GPD, with up to 1:1 filtered water to waste water ratio and upgraded 3/8” input and output design.
- Do-it-yourself installation, typically in a couple of hours with industry-leading help just a phone call away. Fits under a standard kitchen sink, with all parts included, instructions, and videos. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock - no threading pipes needed.
- Features European-designed brushed nickel all-metal faucet and clear see-through 1st stage housing. Backed by a 1-year Manufacturer Warranty with lifetime support line 678-261-7611 from Atlanta, GA USA.
Frequently Bought Together

iSpring RO100 5-Stage 100 GPD Under Sink Reverse Osmosis Drinking Water Filtration System 1:1 Pure to Waste Ratio with US Made Filters


When looking for the finest drinking water available, right in your home, look no further than the iSpring RO100. This economical, 5-stage, Reverse Osmosis-based filtration systems and point-of-use water softener removes virtually all contaminants from your drinking water, leaving you with pure, clear, clean, great-tasting water and nothing else! Backed by superior iSpring quality and service, here is a system that will give you many years of trouble-free, low maintenance peace of mind.

Our products are tested annually to remove up to 99.99% of harmful contaminants that commonly appear in municipal and well water. The high-throughput RO membrane is rated for up to 100 gallons per day (GPD), with up to 1:1 pure to waste water radio which is 2x more efficient than a traditional reverse osmosis system. iSpring RO100 can produce up to 100 gallons of clean, safe, good-tasting water every time you turn on the faucet, ensuring that families of nearly any size will have plenty of clean drinking water available on demand.

The Reverse Osmosis product line is America's favorite brand of water filtration systems. Every filter and membrane of RO100 are made in the U.S.A. with higher quality. All of our systems go through rigorous testing for air leaks, pressure and cycle resistance to maintain our premium quality and high performance standards.

The RO100 is a multi-layered filter system that provides optimal protection against over 1,000 contaminants, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more.
The system consists of 5 different stages, each one designed to progressively remove contaminants and improve water quality, all the filter and RO membrane are made in the U.S.A.
- 3 Pre-filters: PP sediment filter. Carbon KDF (GAC) filter. Carbon block (CTO) filter. They remove large contaminants and protect the RO membrane from chemicals like chlorine and chloramines.
- The heart of the system is the 100GPD Reverse Osmosis (RO) filter that removes contaminants down to 0.0001 microns – so small that only water molecules can squeeze through but virtually nothing else.
- Fine Activated Post Carbon filter provides final polishing before the purified water is delivered to the faucet.
- The end result is bottled-water quality, with no "hardness" and no sodium.

The RO100 is a multi-layered filter system that provides optimal protection against over 1,000 contaminants, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more.
The system consists of 5 different stages, each one designed to progressively remove contaminants and improve water quality, all the filter and RO membrane are made in the U.S.A.
- Machine head with RO membrane housing and Pre-filter housings x3
- Complete 5 Filter Set (PP, GAC, CTO, RO, AC), All filters are made in U.S.A.
- 3.2 gallon Pressurized Storage Tank
- Heavy-duty brushed nickel drinking faucet
- Housing wrenches & Spare parts
- Leak-free Fittings and Tubing Set
- Feed water adapter (fits both 1/2" & 3/8")
- Drain Saddle & Leak Stopper
-
Reinforced Transparent 1st Stage Housing
Provides an easy way to visually inspect the sediment filter and view the contaminants being removed from your water. With the transparent housing you will know it is time for a filter change before a problem occurs.
-
Finest Micron, Layered Protection
The advantage of having both 5-micron GAC & CTO filters is that loose carbon (GAC, KDF) is better at trapping large contaminants, leaving only smaller ones to the CTO carbon block filter. This allows the CTO filter and RO membrane to function at their maximum efficiency and last longer.
-
Leak-Free System & Online Supporting Videos
Push to connect fittings and color coordinated tubings simplify the installation process. We know that high percentage of our customers prefer Do-it-yourself installation. We are investing in video production to provide our customers the resources needed to have successful installation and maintenance.
-
Live Phone Support
Contact our support team for personal assistance in selecting the right system for your water filtration needs. Now, and years from now, we will be right here and ready to help.
- Filtration Performance
- Removes sediments, dust, sand, chlorine, fluoride, lead, arsenic, asbestos, calcium and odors
- Removes sediments, dust, sand, chlorine, fluoride, lead, arsenic, asbestos, calcium and odors
- Removes sediments, dust, sand, chlorine, fluoride, lead, arsenic, asbestos, calcium and odors
- Pieces
- 5
- 15
- 22
- Compatible Model
- RO100, PH100
- RO100
- RO100
- Replacement Cycle
- 1 year
- 2 year
- 3 year
- Availability: In Stock
- Model: RO100
- Manufacturer: iSpring
Reviews with images
Write Review
-
iSpring PH100 6-Stage 100 GPD Under Sink Reverse Osmosis RO Drinking Water Filtration System 1:1 Pure to Waste Ratio with Alkaline Remineralization
$359.99 -
iSpring F3US Standard RO Systems 6-Month Prefilter Replacement Supply Filter Cartridge Pack Set, 3 Filters w/ Sediment, CTO and GAC, 10" X 2.5"
$48.99 -
iSpring FP15US Universal Sediment Water Filter Cartridges for Reverse Osmosis RO and Under Sink Water Filtration Systems, 5 Micron, 10" x 2.5"
$16.99 -
iSpring FC15US Coconut Shell Activated Carbon Block CTO Filter Replacement Cartridge for RO & Under Sink Water Filtration System, 10" x 2.5"
$23.99 -
iSpring FG15US Universal GAC Granular Activated Carbon Filter Replacement Cartridge for RO and Under Sink Water Filtration Systems, 10" x 2.5"
$27.99 -
iSpring FA15US 10-inch Universal Inline Alkaline Replacement Water Filter Cartridge with Calcite for Reverse Osmosis RO System, pH+, Made in USA.
$34.99 -
iSpring FT15US Premium Inline Activated Post Carbon Replacement with Quick Connect, Replacement Filter for PH100 & RO100, 10” X 2.5”
$31.99 -
iSpring F4US Standard RO Systems 6-Month Replacement Prefilter Cartridge Pack Set, 4 Filters w/ Sediment, CTO, GAC and Post-Carbon, 10" X 2.5"
$78.99 -
iSpring F5-100US Universal 5-Stage Reverse Osmosis 1-Year Replacement Water Filter Pack Set with 100 GPD RO Membrane Cartridge, 10" X 2.5"
$142.99 -
iSpring F7-GACUS Universal 5-Stage Reverse Osmosis RO Systems 1-Year Replacement Supply Filter Cartridge Pack Set, 10" X 2.5", Made in USA.
$111.99 -
iSpring F15-100US Universal 5-Stage Reverse Osmosis 2-Year Replacement Water Filter Pack Set with 100 GPD RO Membrane Cartridge, 10" X 2.5"
$299.99 -
iSpring F22-100US Universal 5-Stage Reverse Osmosis 3-Year Replacement Water Filter Pack Set with 100 GPD RO Membrane Cartridge, 10" X 2.5", Made in USA
$399.99 -
iSpring F4AKUS Standard 6-Stage RO Systems 6-Month Replacement Cartridge Pack Set, w/ Sediment, CTO, GAC and Alkaline Mineralization, pH+, 10" X 2.5"
$94.99 -
iSpring F9KUS Standard 6-Stage Reverse Osmosis RO Systems 1-Year Replacement Cartridge Pack Set, with Alkaline Mineralization, pH+, 10" X 2.5"
$188.99 -
iSpring F19K100US Standard 6-Stage Reverse Osmosis RO Systems 2-Year Replacement Cartridge Pack Set, with Alkaline Mineralization, pH+, 10" X 2.5"
$409.99 -
iSpring F28K100US Standard 6-Stage Reverse Osmosis RO Systems 3-Year Replacement Cartridge Pack Set, with Alkaline Mineralization, pH+, 10" X 2.5"
$566.99 -
Filmtec MC1US TW30-1812-100 100GPD Reverse Osmosis RO membrane filter cartridge
$59.99 -
iSpring ICEK3 20 feet 3/8" Tubing Water Line Splitter and Reverse Osmosis Refrigerator Ice Maker Kit, Fits PH100, RO100, US15 Series, Everything Included for Installation
$21.99 -
iSpring AFLT4 Automatic Water Filter Lifespan Reminder, Designed for RCC & RCCP Reverse Osmosis Water Filter, Set and Forget
$22.99
-
Start Download
RO100 Manual