---
product_id: 638544056
title: "Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1"
brand: "stokk"
price: "S/.3641"
currency: PEN
in_stock: true
reviews_count: 6
category: "Stokk"
url: https://www.desertcart.pe/products/638544056-stokk-reverse-osmosis-system-8-stage-tankless-reverse-osmosis-water
store_origin: PE
region: Peru
---

# 400 GPD ultra-fast flow 75% space-saving tankless design 8-stage precision filtration Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1

**Brand:** stokk
**Price:** S/.3641
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with space-saving, high-capacity purity!

## Quick Answers

- **What is this?** Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1 by stokk
- **How much does it cost?** S/.3641 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/638544056-stokk-reverse-osmosis-system-8-stage-tankless-reverse-osmosis-water)

## Best For

- stokk enthusiasts

## Why This Product

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

## Key Features

- • **Sleek & Space-Smart:** Tankless design frees up 75% under-sink space—perfect for modern minimalist kitchens.
- • **Effortless Maintenance:** Twist-and-pull filters with built-in life reminders mean no guesswork, just pure water.
- • **Pure Water, Zero Waste:** 2:1 pure to drain ratio slashes water waste by 80%, making every drop count.
- • **Whisper-Quiet Operation:** Advanced noise reduction tech delivers pure water without disrupting your workspace.
- • **Certified Safety & Quality:** NSF/ANSI 58 & 42 plus FCC certified for trusted removal of 1000+ contaminants including PFAS.

## Overview

The Stokk Reverse Osmosis System is a cutting-edge, tankless under-sink water filter featuring an 8-stage filtration process certified by NSF/ANSI and FCC. Delivering up to 400 gallons per day with a 2:1 pure to drain ratio, it dramatically reduces contaminants including PFAS and TDS while saving 75% under-sink space. Designed for easy installation and maintenance, it includes smart filter life reminders and automatic flushing, ensuring consistently fresh, odor-free water with whisper-quiet operation.

## Description

Stokk Reverse Osmosis Water Filter

Review: So small - Already had an RO tanked system installed so was realy easy to install. Takes up so little space Just wish I had known it wasn't a UK plug
Review: We’ve had this for over a year now so I figured it was time for a review. This RO water system is amazing. It’s a good price, compact, easy to install, and quiet. Just make sure you have an electrical outlet under your sink. If not, you’ll have to drill a separate hole in your counter to plug it into one of the outlets there. You will also need a power drill for drilling a small hole to connect the drain line to your sink drain pipe, but otherwise they give you everything you need. Just follow the instructions and make sure you run it for 30 minutes after it’s all installed to flush the filters. It works great! We are a family of six (2 adults, 4 kids) and heavy water drinkers. I also make gallon pitchers of iced tea a couple of times a week with it. The PPC filter lasted a whole year before I had to change it, and the RO filter is still going after a year and 3 months. It’s a reverse osmosis system, so don’t expect it to have a ton of water pressure, but the flow rate is better than most systems. The water tastes good. Really, it doesn’t have much taste at all. That’s because it removes virtually everything from microplastics to contaminants to minerals. So if you’re worried about getting enough minerals, I would get some mineral drops to put in your cup. Overall, we love it.

## Features

- TESTED AND CERTIFIED BY SGS - Against from NSF/ANSI 58& 42American National Standard & EPA 200 standard, tested and certified by SGS to effectively eliminate the hidden risks of tap water. Also FCC Certified. Scan the QR for SGS online test report
- Tankless Design: Unlike traditional RO water filtration systems, the Stokk tankless reverse osmosis system boasts a sleek, space-saving design. It saves over 75% of under-sink space and prevents recontamination, making it perfect for American kitchens. Installing the Stokk RO system is a breeze and can be done in just 30 minutes. Save time and upgrade your kitchen now
- TASTE IMPROVING - S1 reverse osmosis system adapts a composite filter technology, combining pre-activated carbon filter and post carbon filter to effectively reduce odor and chloride. The unique Coconut-shell activated carbon post filter further absorbs odors and residual chlorine, makes it more purer, fresher
- 400 GPD High Capacity & 2:1 Pure to Drain Ratio: Offer a higher water capacity of up to 400 GPD, and filtering one cup of water in just 10s, which meets demands of family for top-quality water. This tankless RO system saves water waste by 800% compared to traditional under sink RO system. Stokk's home RO water filter system is the optimal choice for those seeking high-performance water filtration
- Thoughtful & Convenient Design: S1 tankless RO water filtration system is equipped with a built-in filter life reminder, freeing you from tracking the filter's service life. The filter element adopts a twist-and-pull design and can be replaced within 2 seconds. Moreover, Auto flush prevents sediment accumulation, extending the filter's lifespan and ensuring your water stays consistently pure
- Integrated Product Design: The Stokk reverse osmosis system features the advanced electrical and water circuits to reduce leaks. Unique noise reduction technology allows you to enjoy pure water without the disturbance of noise. NOTE: An electrical outlet and drilling holes is required to operate it
- USA-BASED SOLUTION & SUPPORT - Choose Stokk's world-class water filtration solutions and US-based customer support for worry-free purchasing and after-sales support. If you're not satisfied with your purchase, feel free to contact our after-sales team and water specialists for lifetime free technical support. (Scroll down for replacement filter purchase options below)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CSJ494TK |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 889,589 in DIY & Tools ( See Top 100 in DIY & Tools ) 575 in Under-Sink Filters |
| Colour | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (205) |
| Date First Available | 20 May 2024 |
| Flow rate | 0.28 Gallons Per Minute |
| Installation method | Under Sink |
| Item Weight | 7.6 kg |
| Item model number | S1 |
| Manufacturer | JIN FANG TECHNOLOGY (HONG KONG) LIMITED |
| Part number | S1 |
| Power source type | Corded Electric |
| Product Dimensions | 37.01 x 11.4 x 30.35 cm; 7.6 kg |
| Special Features | 8 Stage Filtration, 0.0001μm RO, TDS Reduction, Improve Taste, 2:1 Pure to Drain, Reduce 1000+ contaminants, Change Filter Indicator, Automatic Flushing, Reduce TDS, Tankless |
| Style | 400 GPD |

## Product Details

- **Brand:** Stokk
- **Capacity:** 400 gallons
- **Included components:** RO Water filter, PPC, RO filter, Faucet, PE pipes *3, T-fitting, Drain Saddle
- **Installation type:** Under Sink
- **Package information:** Dispenser
- **Power source:** Corded Electric
- **Product dimensions:** 37L x 11.4W x 30.4H centimetres
- **Purification method:** Activated Carbon, Reverse Osmosis

## Images

![Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1 - Image 1](https://m.media-amazon.com/images/I/61QhPrDDhrL.jpg)
![Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1 - Image 2](https://m.media-amazon.com/images/I/61767EeyhQL.jpg)
![Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1 - Image 3](https://m.media-amazon.com/images/I/61psCfdpYqL.jpg)
![Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1 - Image 4](https://m.media-amazon.com/images/I/711sw7c-EML.jpg)
![Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1 - Image 5](https://m.media-amazon.com/images/I/718HTvKnZ6L.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ So small
*by K***Z on 15 July 2025*

Already had an RO tanked system installed so was realy easy to install. Takes up so little space Just wish I had known it wasn't a UK plug

### ⭐⭐⭐⭐⭐ Review
*by M***W on 20 August 2025*

We’ve had this for over a year now so I figured it was time for a review. This RO water system is amazing. It’s a good price, compact, easy to install, and quiet. Just make sure you have an electrical outlet under your sink. If not, you’ll have to drill a separate hole in your counter to plug it into one of the outlets there. You will also need a power drill for drilling a small hole to connect the drain line to your sink drain pipe, but otherwise they give you everything you need. Just follow the instructions and make sure you run it for 30 minutes after it’s all installed to flush the filters. It works great! We are a family of six (2 adults, 4 kids) and heavy water drinkers. I also make gallon pitchers of iced tea a couple of times a week with it. The PPC filter lasted a whole year before I had to change it, and the RO filter is still going after a year and 3 months. It’s a reverse osmosis system, so don’t expect it to have a ton of water pressure, but the flow rate is better than most systems. The water tastes good. Really, it doesn’t have much taste at all. That’s because it removes virtually everything from microplastics to contaminants to minerals. So if you’re worried about getting enough minerals, I would get some mineral drops to put in your cup. Overall, we love it.

### ⭐⭐⭐⭐⭐ Review
*by F***L on 7 July 2024*

I am not new to under sink water filtration. I have been using them for years. This is my first tankless RO system. I replaced a frizzlife 3 filter water purification system with this Stokk RS1 400 gpd because I needed RO water for my humidifier. I have a matching drinking water faucet and sink faucet so I did not need the included RO faucet. The installation was a breeze as the only thing I needed to do was add a drain saddle connection. The creative water tube connections to this box was a cinch to use. Because of the RO membrane, water output will be slower than your average charcoal filter system, keep that in mind. Most will opt for the faster 600 gpd unit but if you dont want to replace your expensive membrane any more than a once a year, you should stick to the 400 gpd. I dont think the plastic cover on the front control panel is necessary at all. Its already hiding in a cabinet. Stokk does provide everything you need except a drill, 1/4" bit and phillips screw driver. You might also need a pair of kitchen shears to trim the tubing. The included thank you letter is a nice touch, talking about the company's start. Stokk cares about the environment and all the waste caused by water bottles. But looking at the filter cartridges they use, they are encased in some heavy duty plastic. Unlike others that I have used in the past, these do not seem to open allowing you to just remove the old filter and or RO membrane. (Confirmed by watching Stokk's filter replacement youtube video.). Which means excess waste in the landfill that will take decades to breakdown. I would like to see development in this area. Sure its super convenient but not green in the least and kinda makes me wonder if I bought the system. This company has US based support and is from Hong Kong. . Jin Fang Technology has 3 trademarks for Stokk that were filed in 2023. So despite being new to the scene their product is seriously well designed. Stokk S1 series filtration meets the following specifications and is certified by SGS, a global certifiacation company. Certs can be found on the Stokk support website. NSF/ANSI 42 Filters are certified to reduce aesthetic impurities such as chlorine and taste/odor. These can be point-of-use (under the sink, water pitcher, etc.) or point-of-entry (whole house) treatment systems. NSF/ANSI 58 Reverse osmosis systems incorporate a process that uses reverse pressure to force water through a semi-permeable membrane. Most reverse osmosis systems incorporate one or more additional filters on either side of the membrane. These systems reduce contaminants that are regulated by Health Canada and EPA. For those of you who dont read the included manuals, you can extend your 1 yr warranty for a 2nd year by scanning the QR code found in the last page if the book.

## Frequently Bought Together

- Stokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58& 42, FCC Listed, S1
- Stokk RS1-PPC Filter, Replacement for S1 Series Reverse Osmosis System, 6-12 month Lifetime
- 2024 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-14*