---
product_id: 465852711
title: "RTW5AK SGS-Tested Reverse Osmosis Alkaline Water Filter System, 6 Stage pH+ Alkaline Remineralization Under Sink RO Water Filtration System Plus Extra 3 Filters, 50 GPD"
brand: "puredrop"
price: "€ 381.25"
currency: EUR
in_stock: true
reviews_count: 10
category: "Pure Drop"
url: https://www.desertcart.nl/products/465852711-rtw5ak-sgs-tested-reverse-osmosis-alkaline-water-filter-system-6
store_origin: NL
region: Netherlands
---

# 50 GPD ultra-efficient flow Easy DIY quick-connect install 6-stage alkaline remineralization RTW5AK SGS-Tested Reverse Osmosis Alkaline Water Filter System, 6 Stage pH+ Alkaline Remineralization Under Sink RO Water Filtration System Plus Extra 3 Filters, 50 GPD

**Brand:** puredrop
**Price:** € 381.25
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with PureDrop’s premium alkaline RO system — because your health deserves the best!

## Quick Answers

- **What is this?** RTW5AK SGS-Tested Reverse Osmosis Alkaline Water Filter System, 6 Stage pH+ Alkaline Remineralization Under Sink RO Water Filtration System Plus Extra 3 Filters, 50 GPD by puredrop
- **How much does it cost?** € 381.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/465852711-rtw5ak-sgs-tested-reverse-osmosis-alkaline-water-filter-system-6)

## Best For

- puredrop enthusiasts

## Why This Product

- Trusted puredrop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug-Free Performance:** Operates without electricity, ensuring uninterrupted clean water even during outages.
- • **Pure, Balanced Hydration:** 6-stage filtration restores essential minerals for crisp, alkaline water that fuels your day.
- • **Trusted Quality & Support:** SGS-tested, BPA-free, FDA-compliant system backed by lifetime customer service for peace of mind.
- • **Sustainable & Cost-Effective:** Generates 1 gallon of pure water from less than 3 gallons—ditch bottled water and save money.
- • **Hassle-Free Setup & Maintenance:** Color-coded lines and quick-connect fittings make installation and filter changes a breeze.

## Overview

The PureDrop RTW5AK is a 6-stage reverse osmosis under-sink water filtration system delivering up to 50 gallons per day of alkaline, mineral-rich water. Featuring SGS testing, BPA-free components, and FDA compliance, it ensures ultra-safe, crisp-tasting water without electricity. Designed for easy DIY installation with quick-connect fittings and includes extra filters for extended use, this system offers sustainable, cost-effective hydration with trusted customer support.

## Description

PureDrop RTW5AK SGS-Tested Reverse Osmosis Alkaline Water Filter System, 6 Stage pH+ Alkaline Remineralization Under Sink RO Water Filtration System Plus Extra 3 Filters, 50 GPD - desertcart.com

Review: PUREDROP - BEST ALL AROUND, GREAT PRICE, GREAT SUPPORT & A HIGH QUALITY RO SYSTEM - Wow Unbelievable. after 4 years - update. 2024. I called and talked with Nick again who provided the VERY BEST customer service I have ever gotten in my entire life. He answered the phone and within minutes my small install problem was solved and he is sending the part I needed at no charge. If you are looking for the best RO system, at the best price, you do not need to look any further. I did extensive research and found the Puredrop RO system to be the best overall. It has the best price, wonderful support, and is a very well-made quality system. ISPRING VS PUREDROP Puredrop is the same company that makes ISpring, which is also a very nice RO system. I was not sure if I should buy the Puredrop RO system compared the ISpring RO system, so I called support and asked the difference. I spoke with both Nick and Don who provided all the answers to my questions so that I could make an educated decision. ISpring RO t is more money, but you get more for your money: Larger Tank, a Clear 1st Stage tank, and a better faucet. In my case, it is just me and my wife, and I do not need a larger tank and I have a faucet from owning other RO systems and I would only be giving up the clear tank with the Puredrop System. CLEAR 1st STAGE TANK If you change your filters on time, there really is no reason to see inside the first stage. If you are forgetful, it may be a good idea to get the Ispring system with the clear first stage tank. FILTERS AND MEMBRANE I had other RO systems in the past, and the biggest issue I have found was the cost to replace the filters-especially the membrane, which can be as high as $40 for some name brands—especially if you have to have the check value built into the membrane. The Puredrop RO has the check valve as a separate component in the system, which eliminates having to buy a membrane one with a built-in check valve. PLUS, I love it that PureDrop provides an extra set of filters for the next time the filters need to be changed. After researching the filters, I found that I can buy generic filters for a lot less and if I wanted the Puredrop brand, it was not that much more. INSTALLATION AND SMALLER TANK The Puredrop RO system, which was easy to install with color coded water lines. So far everything is working fine and I really like the small compact tank, which gives me a lot more room for storage under the sink. There is no reason that I can see to have the larger tank for a family of two. CONCLUSION The Puredrop has been installed for a week when I wrote this review. I suspect that will not have any issues, but even if I do, I know that I can always call support: Nick or Don, and they will for sure take care of any issues I have for years to come.
Review: Great taste, plenty of flow - We have had it running for 3+ months with out any issues. The directions were pretty good but I did buy a garbage disposal ro waste adapter. I didn't have enough drain pipe to install the waste clamp so the adapter worked. Everything else came for a complete install for most people plumbing. I installed mine in the basement and ran the tubing up into the kitchen sink cabinet. I also installed a T so the output goes to the fridge and also the facet at the sink. It also comes with a complete set of extra filters so this will last year almost 2 years with out replacements. Water taste great and even the dogs love it.

## Features

- 【Restore Balanced Alkalinity】 PureDrop RO under sink water filter system uses a 6-Stage Alkaline Remineralization Layered Filtration for superior water quality. Unlike traditional reverse osmosis systems that produce slightly acidic water, an alkaline remineralization filter - restores healthy minerals and produces a balanced alkalinity. This reliable and ultra-safe Reverse Osmosis water filter system ensures clean, pure, and healthy drinking water.
- 【High Capacity Efficient Filtration】 Supplying up to 50 gallons of clean drinking water per day without any electricity use, this efficient RO water filter system can generate 1 gallon of clean drinking water from less than 3 gallons. PureDrop RO water filters provide unlimited clean, healthy, refreshing crisp tasting water for you and the ones you care about. No more bottled water needed.
- 【Great Value for Money】The 6-stage reverse osmosis water filter includes a premium 3-piece pre-filter replacement kit and a 100% leak-free drinking water faucet. It comes with all the necessary components for easy installation, ensuring a hassle-free setup. High quality PureDrop water filter for sink helps you experience clean, safe, good-tasting water every time you turn on the faucet.
- 【Ultra-Safe & Reliable】This under-sink reverse osmosis system undergoes thorough testing for air leaks, pressure, and cycle resistance, ensuring that itmeets our stringent quality and performance standards. All parts of the RO system are BPA-free. The system is manufactured to comply strictly with FDA standards (CFR-174, 177) and has been tested by independent third-party against NSF/ANSI standards for water quality, material safety, and structural integrity.
- 【Easy Installation & Maintenance】The RO water filtration system includes user-friendly quick-connect fittings, complimentary spare parts, a housing wrench, and all necessary components for a hassle-free installation. For maintenance, simply replace the filters on a regular basis. If you have any inquiries or need assistance with our system, please reach out to us for lifetime technical and customer service support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8LJ3FPG |
| Batteries Required? | No |
| Best Sellers Rank | #42,297 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #96 in Under-Sink & Countertop Filtration |
| Brand | PureDrop |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (602) |
| Date First Available | August 3, 2022 |
| Installation Type | User-Installed |
| Item Package Quantity | 1 |
| Item Weight | 22 pounds |
| Item model number | RTW5AK |
| Manufacturer | PureDrop |
| Model Name | RTW5AK |
| Package Information | Bottle |
| Part Number | RTW5AK |
| Power Source | Battery Powered, Non electric |
| Product Dimensions | 16"L x 22"W x 17"H |
| Size | RO water system w/ Alkaline |
| Special Feature | Reduce TDS, reverse osmosis water filter system |
| Special Features | Reduce TDS, reverse osmosis water filter system |
| Style | RO water system w/ Alkaline |
| UPC | 810004173019 |
| Warranty Description | 1-year manufacturer |

## Product Details

- **Brand:** PureDrop
- **Capacity:** 50 Gallons
- **Included Components:** Water filtration system, faucet, installation manual, tank, parts
- **Installation Type:** User-Installed
- **Material:** Alkaline RO Water Filtration
- **Package Information:** Bottle
- **Power Source:** Battery Powered, Non electric
- **Product Dimensions:** 16"L x 22"W x 17"H
- **Purification Method:** Reverse Osmosis
- **Special Feature:** Reduce TDS, reverse osmosis water filter system

## Images

![RTW5AK SGS-Tested Reverse Osmosis Alkaline Water Filter System, 6 Stage pH+ Alkaline Remineralization Under Sink RO Water Filtration System Plus Extra 3 Filters, 50 GPD - Image 1](https://m.media-amazon.com/images/I/71kTtMMZv6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ PUREDROP - BEST ALL AROUND, GREAT PRICE, GREAT SUPPORT & A HIGH QUALITY RO SYSTEM
*by N***1 on November 27, 2020*

Wow Unbelievable. after 4 years - update. 2024. I called and talked with Nick again who provided the VERY BEST customer service I have ever gotten in my entire life. He answered the phone and within minutes my small install problem was solved and he is sending the part I needed at no charge. If you are looking for the best RO system, at the best price, you do not need to look any further. I did extensive research and found the Puredrop RO system to be the best overall. It has the best price, wonderful support, and is a very well-made quality system. ISPRING VS PUREDROP Puredrop is the same company that makes ISpring, which is also a very nice RO system. I was not sure if I should buy the Puredrop RO system compared the ISpring RO system, so I called support and asked the difference. I spoke with both Nick and Don who provided all the answers to my questions so that I could make an educated decision. ISpring RO t is more money, but you get more for your money: Larger Tank, a Clear 1st Stage tank, and a better faucet. In my case, it is just me and my wife, and I do not need a larger tank and I have a faucet from owning other RO systems and I would only be giving up the clear tank with the Puredrop System. CLEAR 1st STAGE TANK If you change your filters on time, there really is no reason to see inside the first stage. If you are forgetful, it may be a good idea to get the Ispring system with the clear first stage tank. FILTERS AND MEMBRANE I had other RO systems in the past, and the biggest issue I have found was the cost to replace the filters-especially the membrane, which can be as high as $40 for some name brands—especially if you have to have the check value built into the membrane. The Puredrop RO has the check valve as a separate component in the system, which eliminates having to buy a membrane one with a built-in check valve. PLUS, I love it that PureDrop provides an extra set of filters for the next time the filters need to be changed. After researching the filters, I found that I can buy generic filters for a lot less and if I wanted the Puredrop brand, it was not that much more. INSTALLATION AND SMALLER TANK The Puredrop RO system, which was easy to install with color coded water lines. So far everything is working fine and I really like the small compact tank, which gives me a lot more room for storage under the sink. There is no reason that I can see to have the larger tank for a family of two. CONCLUSION The Puredrop has been installed for a week when I wrote this review. I suspect that will not have any issues, but even if I do, I know that I can always call support: Nick or Don, and they will for sure take care of any issues I have for years to come.

### ⭐⭐⭐⭐⭐ Great taste, plenty of flow
*by S***N on September 25, 2025*

We have had it running for 3+ months with out any issues. The directions were pretty good but I did buy a garbage disposal ro waste adapter. I didn't have enough drain pipe to install the waste clamp so the adapter worked. Everything else came for a complete install for most people plumbing. I installed mine in the basement and ran the tubing up into the kitchen sink cabinet. I also installed a T so the output goes to the fridge and also the facet at the sink. It also comes with a complete set of extra filters so this will last year almost 2 years with out replacements. Water taste great and even the dogs love it.

### ⭐⭐⭐⭐⭐ Solid product
*by N***E on October 13, 2025*

I honestly wish I had something bad to say about this system. But I got it at a really good price (127$) and it’s working flawlessly. It was pretty easy to set up. The instructions were a little confusing. But overall very easy set up and it works pretty good. I also like that it comes with replacement filters. Got my water down to about 20 ppm but don’t quote me on that because I can’t guarantee the accuracy of my meters ha ha. It fits under the sink nicely. I don’t use it for drinking water, but I do use it for my humidifier and I haven’t seen any residue buildup in the room since I’ve switched to RO.

## Frequently Bought Together

- PureDrop RTW5AK Reverse Osmosis Alkaline Water Filter System, pH+ Alkaline Remineralization Under Sink RO Water Filter System, 6 Stage Reverse Osmosis Water Filtration Plus Extra 3 Filters, 50 GPD
- iSpring ICEK Ultra Safe Fridge Water Line Connection and Ice Maker Installation Kit for Reverse Osmosis RO Systems & Water Filters, 1/4", 20 feet

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nl/products/465852711-rtw5ak-sgs-tested-reverse-osmosis-alkaline-water-filter-system-6](https://www.desertcart.nl/products/465852711-rtw5ak-sgs-tested-reverse-osmosis-alkaline-water-filter-system-6)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-25*