
iSpring RO100
Score: 78/100
iSpring RCC7AK Black
Score: 85/100Rankings

The iSpring RCC7AK-BLK is a 6-stage under-sink reverse osmosis system certified by NSF/ANSI 58 to remove up to 99% of over 1,000 contaminants. It features an alkaline remineralization stage that restores minerals and pH balance, producing bottled-water quality taste without requiring electricity. Best suited for homeowners seeking superior drinking water quality with bottled-water taste.

The iSpring RO100 is a reliable 5-stage under-sink reverse osmosis system designed for residential use, capable of removing up to 99% of over 1,000 contaminants. It features a highly efficient 1:1 pure-to-waste water ratio and utilizes US-made filters for reliable filtration. The system is best suited for homeowners seeking comprehensive contaminant removal with easy DIY installation and a standard 100 GPD flow rate.
| Attribute | ![]() | ![]() |
|---|---|---|
5 stages | 6 stagesbest | |
100 gallons per daybest | 75 gallons per day | |
99 percentbest | 97.9 percent | |
1,000 countbest | 1,000 countbest | |
| ↓ lower better | 5.25 inchesbest | 16 inches |
| ↓ lower better | 17 inchesbest | 19 inches |
— | 40 PSIbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | US Made | NSF/ANSI 58 |
Storage(1) | ||
Storage Tank Capacity (gallons) | Standard gallons | Not specified gallons |
Maintenance(1) | ||
Filter Lifespan (months) | months | Not specified months |
Design(2) | ||
System Width (inches) | 5.25 inches | 16.0 inches |
System Height (inches) | 17.00 inches | 19.0 inches |
Performance(5) | ||
Filtration Stages (stages) | 5 stages | 6 stages |
Daily Production Rate (gallons per day) | 100 gallons per day | 75 gallons per day |
TDS Reduction Rate (percent) | 99 percent | 97.9 percent |
Wastewater Ratio | 1:1 | Not specified |
Feed Water Pressure (PSI) | PSI | 40-80 PSI |
Features(3) | ||
Remineralization | false | true |
Faucet Type | Dedicated Faucet | Black |
Automatic Shutoff | true | |

Products in the top-left offer the best value (high score, low price).

The provided research data does not contain independent professional reviews or detailed editorial feedback.
Users value the system for producing high-quality water that improves the taste of beverages and food, such as tea, coffee, and ice cubes.


