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A modern white under sink water filtration system from the SIMPL Series, this Tankless Reverse Osmosis (RO) unit features a textured side, two circular dials—including a top dial with a blue accent—and a sleek metal faucet. With advanced tankless RO technology, it delivers up to 400 gallons of fresh, clean water per day.
Introducing the SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD—a sleek white system with included faucet. Enjoy pure water made simple with its impressive 400 gallons per day capacity, rapid 1L/minute flow, advanced 4-stage filtration, hassle-free installation, and space-saving tankless design.
Introducing the SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD—a sleek white water purifier featuring convenient front access filters, intuitive indicator lights, and a user-friendly power button. Set against a blue background, the text emphasizes its advanced tankless RO technology, high 400 gallons per day capacity, rapid quick-change filters for easy maintenance, effortless installation process, and handy filter reset buttons.
The SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD maximizes undersink space by saving up to 70% compared to traditional tank systems, as shown in a side-by-side inset image, and offers a high filtration capacity of up to 400 gallons per day.
A smiling woman enjoys a glass of water, with text highlighting responsible refreshment: less plastic waste, healthier living, and cost savings. Featuring the Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD - SIMPL Series—an advanced under-sink solution delivering up to 400 gallons per day—icons show savings compared to bottled water, reduced single-use plastic consumption, and support for a healthier lifestyle.
Diagram featuring cutaway views of two filter cartridges, labeled as PAC Composite Filter for stages 1–3 and Reverse Osmosis for stage 4, with icons representing contaminants removed—including chlorine, sediment, TDS, lead, and arsenic. The SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System delivers up to 400 gallons per day.
The modern brushed nickel stainless steel faucet with a single lever sits elegantly on the kitchen countertop, complemented by a white hexagonal backsplash and a green potted plant. Icon highlights showcase this faucet’s lead-free composition, single-lever operation, and durable 304 stainless steel construction. It’s the perfect companion for the SIMPL Series 400GPD Tankless Reverse Osmosis (RO) Under Sink Filtration System, delivering clean and safe water throughout your kitchen.
Here’s the rewritten sentence using your product data: Large 1:1 image of splashing water with the text “Efficient Pure-to-Waste Ratio.” Beneath, the Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD - SIMPL Series appears alongside text: “Filtration That Saves.” Engineered for optimal pure water extraction with powerful under sink filtration—delivering up to 400 gallons per day. Clean white background.
Product Measurements (in blue): The SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD measures 13.7 inches tall, 14 inches deep, and 5.2 inches wide, delivering up to 400 gallons per day. The included faucet is 13.6 inches tall, 5.4 inches deep, and 2.6 inches wide.
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A modern white under sink water filtration system from the SIMPL Series, this Tankless Reverse Osmosis (RO) unit features a textured side, two circular dials—including a top dial with a blue accent—and a sleek metal faucet. With advanced tankless RO technology, it delivers up to 400 gallons of fresh, clean water per day.
Introducing the SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD—a sleek white system with included faucet. Enjoy pure water made simple with its impressive 400 gallons per day capacity, rapid 1L/minute flow, advanced 4-stage filtration, hassle-free installation, and space-saving tankless design.
Introducing the SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD—a sleek white water purifier featuring convenient front access filters, intuitive indicator lights, and a user-friendly power button. Set against a blue background, the text emphasizes its advanced tankless RO technology, high 400 gallons per day capacity, rapid quick-change filters for easy maintenance, effortless installation process, and handy filter reset buttons.
The SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD maximizes undersink space by saving up to 70% compared to traditional tank systems, as shown in a side-by-side inset image, and offers a high filtration capacity of up to 400 gallons per day.
A smiling woman enjoys a glass of water, with text highlighting responsible refreshment: less plastic waste, healthier living, and cost savings. Featuring the Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD - SIMPL Series—an advanced under-sink solution delivering up to 400 gallons per day—icons show savings compared to bottled water, reduced single-use plastic consumption, and support for a healthier lifestyle.
Diagram featuring cutaway views of two filter cartridges, labeled as PAC Composite Filter for stages 1–3 and Reverse Osmosis for stage 4, with icons representing contaminants removed—including chlorine, sediment, TDS, lead, and arsenic. The SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System delivers up to 400 gallons per day.
The modern brushed nickel stainless steel faucet with a single lever sits elegantly on the kitchen countertop, complemented by a white hexagonal backsplash and a green potted plant. Icon highlights showcase this faucet’s lead-free composition, single-lever operation, and durable 304 stainless steel construction. It’s the perfect companion for the SIMPL Series 400GPD Tankless Reverse Osmosis (RO) Under Sink Filtration System, delivering clean and safe water throughout your kitchen.
Here’s the rewritten sentence using your product data: Large 1:1 image of splashing water with the text “Efficient Pure-to-Waste Ratio.” Beneath, the Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD - SIMPL Series appears alongside text: “Filtration That Saves.” Engineered for optimal pure water extraction with powerful under sink filtration—delivering up to 400 gallons per day. Clean white background.
Product Measurements (in blue): The SIMPL Series Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD measures 13.7 inches tall, 14 inches deep, and 5.2 inches wide, delivering up to 400 gallons per day. The included faucet is 13.6 inches tall, 5.4 inches deep, and 2.6 inches wide.

Tankless Reverse Osmosis (RO) Under Sink Filtration System 400GPD - SIMPL Series

$299.99
Save 14%
$349.99 MSRP

SKU : TROM400STD

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The Brio SIMPL Tankless Reverse Osmosis Under Sink Filtration System is an easy and reliable clean water solution that effortlessly provides pure hydration. It features a space-saving design that takes up minimal under sink space, advanced 4-in-2 reverse osmosis filtration, and a sustainable 1:1 pure-to-drain waste ratio. Plus, it provides up to 400 gallons of filtered water per day and is easy to maintain with “quick-change” front facing filters.

  • Powerful 4-in-2 Reverse Osmosis Filtration: Blocks dirt, rust, sand, iron, chlorine, cysts, salts, volatile organic compounds, total dissolved solids, and heavy metals like lead and arsenic, delivering clean, clear water free from turbidity, odors, and pollutants.
  • 400 Gallons Per Day (GPD):  Filtered water flows at a rate of 400 gallons per day.
  • 1:1 Pure to Drain Ratio: Advanced design produces significantly less wastewater, for every 1 cup of pure water dispensed only 1 cup of wastewater is created, saving you money.
  • Compact Tankless Design: Measuring 5.2” W x 13.7” H x 14” D, this modern tankless design occupies minimal space under your sink.
  • Easy Filter Replacement: Remove and replace filters effortlessly due to user-friendly quick-change design.
  • Long-Lasting Filters: PAC filter purifies water up to 12 months, RO membrane filter lasts up to 24 months, depending on source water.
  • Included: System, faucet, first set of filters & installation kit.
  • Model: TROM400STD

Many frequently asked questions can be answered in our help center. Here you can find useful information such as shipping policies, warranty information, product guides and more! Brio Help Center

Your order will be fulfilled during our normal business hours (8 a.m. – 5 p.m. PST). Orders placed over the weekend or on holidays will be fulfilled on the following business day.

However, we cannot guarantee same day fulfillment. In general, orders will be shipped out the next business day after you have completed your order.

You may return any unused or undamaged products within 30 days of the original purchase date to receive a full refund. Once you file a return, we will process your refund within 3 to 5 business days.

When you receive your order please make sure to save your original packaging in the event you need to return the product.

To file a return, please visit our returns page here. Please note that you will be responsible for return shipping costs unless the reason for the return is due to an error on our behalf.

Download user manual
  • Image title

    Space-Saving Design

    The SMPL under sink system has a slim design that fits neatly without sacrificing space.

  • Image title

    Contaminant-Free Hydration

    Quality manufactured high-density graded RO membrane features a 0.0001-micron rating.

  • Image title

    Filtration That Saves Water

    Minimizes waste with only 1 cup of wastewater for every 1 cup of pure water produced.
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