WaterClue is reader-supported. As an Amazon Associate we earn from qualifying purchases. Amazon prices and product images are sourced live from the Amazon Product Advertising API and may not reflect current Amazon listings — confirm price and availability at Amazon before purchase. Full affiliate disclosure.

iSpring RCS5T Countertop Reverse Osmosis Water Dispenser

Model RCS5T
4.2/5 from 893 ratings
from Check current price
Price via Amazon
Check Price on Amazon
Free shipping with Amazon Prime · 30-day returns
Power
Not required (water pressure only)
Stages
5 (sediment + GAC + carbon block + RO membrane + post-carbon)
Warranty
1 year
Connection
Kitchen faucet aerator adapter (no undersink install)
Dimensions
15" x 10" x 14" (countertop)
Dispense Flow
~0.5 GPM

iSpring RCS5T Countertop Reverse Osmosis Water Dispenser Review

The iSpring RCS5T is a 5-stage countertop reverse osmosis water purifier and dispenser that connects to a kitchen faucet aerator adapter, requiring no undersink installation or dedicated faucet hole. The 5 filtration stages include: Stage 1 (PP sediment), Stage 2 (GAC carbon), Stage 3 (carbon block), Stage 4 (75 GPD RO membrane for TDS, lead, nitrates, fluoride reduction), and Stage 5 (post-carbon polishing). Purified water is stored in the internal 3-liter pressurized tank and dispensed through a built-in faucet on the front of the unit. At 75 GPD RO membrane production, the 3-liter tank refills in approximately 2-3 hours. The dispensing faucet delivers about 0.5 GPM filtered flow for glass and bottle filling. No electricity is required -- the RCS5T operates on household water pressure alone. The unit sits on the countertop, making it ideal for renters who cannot modify plumbing, for apartments, and for households that want to evaluate RO filtration before committing to an undersink installation.
Pros
  • No undersink installation -- renter-friendly
  • No electricity required
  • 5-stage RO with NSF 58 certification
  • 3-liter internal tank provides ready supply without waiting
Cons
  • 3-liter tank requires 2-3 hours to refill via 75 GPD membrane
  • Countertop footprint (15x10 inches) is significant
  • Faucet aerator connection reduces main faucet flow during production

Full Specifications

Brand
iSpring
Model Number
RCS5T
Power
Not required (water pressure only)
Stages
5 (sediment + GAC + carbon block + RO membrane + post-carbon)
Warranty
1 year
Connection
Kitchen faucet aerator adapter (no undersink install)
Dimensions
15" x 10" x 14" (countertop)
Dispense Flow
~0.5 GPM
Internal Tank
3 liters
Tds Reduction
Up to 95%
Certifications
NSF/ANSI 58
Production Rate
75 GPD

Similar Water Dispensers

Berkey

Big Berkey Gravity Water Filter System BK4X2

gravity filter / water purifier 18-8 stainless steel prorated lifetime
Check current price
4.7
View Details
Waterdrop

Waterdrop G3P800 Under Sink RO System

under-sink RO system 1 1 year
Check current price
4.6
View Details
Brio

Brio Self-Cleaning Bottleless Water Cooler CLPOU520UVV5

point-of-use (POU) bottleless 1 year parts and labor 1/4" cold water line
Check current price
4.5
View Details