iSpring RO100 5-Stage 100 GPD Under Sink Reverse Osmosis Drinking Water Filtration System 1:1 Pure to Waste Ratio with US Made Filters
-6%
$299.99
$319.99
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
$299.99
-6%
$319.99
$319.99
- Availability: In Stock
- Model: RO100
- Manufacturer: iSpring
- Product Dimensions: 14.20"L x 5.25"W x 17.00"H
- Product Weight: 28.30 LB
Reviews with images
Write Review
Ryan Presnal | 
2020-06-05
While I have no way of knowing how it will impact long term, I will say I am more comfortable drinking the water. We drank the water but it was never pleasant in spite of changing the filters every 6 months. Switching to this iSpring water system is one of the best purchase decisions i've ever made!

2020-06-05
While I have no way of knowing how it will impact long term, I will say I am more comfortable drinking the water. We drank the water but it was never pleasant in spite of changing the filters every 6 months. Switching to this iSpring water system is one of the best purchase decisions i've ever made!
Matt Cobb | 
2020-06-03
I could not be happier with my purchase of 's reverse osmosis filtration system and I have a high opinion of their customer service and product quality.

2020-06-03
I could not be happier with my purchase of 's reverse osmosis filtration system and I have a high opinion of their customer service and product quality.
Daniel LaRiviere | 
2020-05-25
I still can't believe I don't have to purchase and haul huge bottles of water home any more. This package has every part and installation was smooth because the manual is quite detailed.

2020-05-25
I still can't believe I don't have to purchase and haul huge bottles of water home any more. This package has every part and installation was smooth because the manual is quite detailed.
0 0 | 
2020-05-24
Seems to work pretty good, our well water was pretty bad! It's nice to have my new countertops cleared of the old counter-top systems.

2020-05-24
Seems to work pretty good, our well water was pretty bad! It's nice to have my new countertops cleared of the old counter-top systems.
0 0 | 
2020-05-22
What I especially love about this product in particular, besides my own personal experience with it, is the fact that this water filtration system comes with a yearlong satisfaction guaranteed warranty reiterating to me that this is an honest company with an honest product that they stand behind 100%. Item arrived promptly and in good condition.

2020-05-22
What I especially love about this product in particular, besides my own personal experience with it, is the fact that this water filtration system comes with a yearlong satisfaction guaranteed warranty reiterating to me that this is an honest company with an honest product that they stand behind 100%. Item arrived promptly and in good condition.
0 0 | 
2020-05-21
Gives peace of mind knowing our water is filtered for drinking, cooking, and our our 4 dogs.

2020-05-21
Gives peace of mind knowing our water is filtered for drinking, cooking, and our our 4 dogs.
Jerry Weaver | 
2020-05-20
The system I had before was a GE and it sucked. Got this system and installed it by myself. I found quite a bit of water under the sink in the morning so knew I had not tightened down ALL connections. Redid the tightening part and no problems since then.

2020-05-20
The system I had before was a GE and it sucked. Got this system and installed it by myself. I found quite a bit of water under the sink in the morning so knew I had not tightened down ALL connections. Redid the tightening part and no problems since then.
0 0 | 
2020-05-19
My tap TDS was 430, with a Pur pitcher it was 375, and now with this system it's 14.

2020-05-19
My tap TDS was 430, with a Pur pitcher it was 375, and now with this system it's 14.
-
iSpring PH100 6-Stage 100 GPD Under Sink Reverse Osmosis RO Drinking Water Filtration System 1:1 Pure to Waste Ratio with Alkaline Remineralization
$349.99 -
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 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
$19.99 -
iSpring HC13-US Clear Water Filter Housing 3/8" Outlet/Inlet, Fits 10" X 2.5" Water Filters, US-Made
$29.99
-
Start Download
RO100 Manual