iSpring RCC7U Reverse Osmosis System [UV Sterilizer]

iSpring RCC7U reverse osmosis system with its advanced 11 watt UV sterilization stage is the perfect solution to purifying well water and other water sources containing excessive microorganisms. The unique water flows sensor switch turns the UV unit on and off automatically.

The iSpring RCC7U is one of the best RO systems on the market that provides a nice combination of standard RO process and an Ultraviolet (UV) sterilizer to deliver an extra level of protection that guarantees a much safer and cleaner water.

Filtration Process

To start, the RCC7U is based on the iSpring RCC7 model. The filtration process is composed of the standard 5 stages of the RCC7 with the addition of a UV light filter which makes it a 6-stage RO system.

In the first line of defense, we have the three-carbon prefilters which eliminate sediments, particles and contaminants larger than 5 microns. They also remove chlorine, chloramines unpleasant taste, odor as well as other chemicals present in the water.

Then there is the 0.0001-microns RO membrane in the 4th stage which traps more than 1000 known contaminants in water including fluoride, arsenic, chlorine, fertilizers, pesticides and heavy metals. 

The 5th stage is a fine GAC filter which further clears residual contaminants from the water as it leaves the Ro tank.

UV Light Filter

On top of the standard 5-stage filtration process, the iSpring RCC7U features a UV filter in a stainless steel housing which forms the last stage of the system.

Chlorine is used in municipal treatment plants to kill off bacteria and microorganisms. However, the 5-stages of the RO system completely removes all the chlorine present in the water.

The side-effect of this is that the risk of these microorganisms growing back into the RO water as it’s stored in the RO tank or passes through the tubing is increased. This is where the 6th stage of this iSpring RCC7U model comes in handy.

The filter uses an 11W UV sterilization lamp which passes UV rays into the RO water killing up to 99% of all the bacteria, viruses, mold spores, cysts and other microorganisms that are likely to grow in the water.

The combination of this UV filter and the standard RO process makes RCC7U really effective in not only removing contaminants but also dangerous microorganisms that might be present in the water.

Another commendable thing about this filter is that it comes with a smart flow sensor which automatically turns the UV lamp on and off with water flow.

It turns on the UV light immediately it detects flow and turns off again automatically when you turn off the tap. This way it guarantees greater efficiency and saves power in addition to lengthening the service life of the UV lamp.

Filtration Capacity

Same as the RCC7, the RO membrane of the RCC7U model can deliver up to 75 gallons of filtered water per day. Like I mentioned earlier, this is fairly high output for a residential RO system and should be enough to cater to the daily water needs of most households.

The unit also doesn’t generate a lot of wastewater. For every gallon of clean water it produces, about two gallons get wasted and that’s within the range of many under-sink systems you will find on the market.

Installation and Maintenance

Setting up the RCC7U can typically take a few hours but the process is relatively simple since it’s designed for DIY installation with all parts and instruction manual included.

The entire unit will fit easily in most under-sink cabinets. However, you will need to ensure you have a power supply nearby the cabinet for the UV filter. That might be the only challenging part as far as installation is concerned.

To sum it all, the iSpring RCC7U is indeed a wonderful RO system that no doubt guarantees extra quality water. If you use well water or have concerns about the possibility of bacteria in your water, then you might want to consider getting this iSpring RO system. 


  • Removes more than 1000 contaminants in the water
  • UV light filter absolutely kills all microorganisms
  • Smart flow sensor automatically turns the UV lamp on and off
  • A fairly high output of up to 75 gallons of water a day
  • A decent 1:2 pure to wastewater ratio
  • Comes with a 3-year limited warranty and lifetime support


  • Requires power supply which may make installation under the sink a bit challenging

Product Overview

ProductiSpring RCC7U Reverse Osmosis System [UV Sterilizer]
Rating3.5 out of 5 stars (3.5 / 5) (More than 2 reviews)
Recommended price280 USD (Check the latest price at

Product Specifications

Pre-filtersPP sediment filter
Carbon KDF (GAC) filter
Carbon block (CTO) filter
RO membrane0.0001 microns
Post-filtersFine GAC final polishing filter
Incoming Water PressureIdeal for low-pressure water
Storage tank3.2-gallon capacity
2.5-gallon holding
Tubing4 color-coded tubing
FaucetEuropean-designed brushed nickel
Fitting adaptors1/2″ NPT & 3/8″ COMP
Filtered Water to Waste Water Ratio1:3
FeaturedFirst stage clear housing
11-watts UV sterilization stage
1-year manufacturer warranty
iSpring’s unique lifetime technical support
DocumentsUser Manual [PDF]


Installation Guide

This video shows you step-to-step how to install iSpring 5-Stage RCC7U Reverse Osmosis System.



Does the pump help in supplying stronger water flow out of the faucet?

No, it doesn’t, the pump is used for creating more pressure at the water inlet, not at the outlet or storage tank.

Images Gallery

iSpring RCC7U 6 -Stage Reverse Osmosis System

iSpring RCC7U 6 -Stage Reverse Osmosis System
 iSpring RCC7U 6 - UV stage
iSpring RCC7U 6 – UV stage
 iSpring RCC7U - RO membrane 0.0001 micron
iSpring RCC7U – RO membrane 0.0001 micron
  iSpring RCC7U 6 - Faucet
iSpring RCC7U 6 – Faucet
iSpring RCC7U 6 - Faucet Components
iSpring RCC7U 6 – Faucet Components
iSpring RCC7U 6 - Stages & water flow
iSpring RCC7U 6 – Stages & water flow
iSpring RCC7U 6 - Dimensions
iSpring RCC7U 6 – Dimensions

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