2026年 April

10 Best water purifiers in 日本

Last Updated - 02/04/2026

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Best Choice
01

GRAYL

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GRAYL (GREYL) Water Purifier Ultra Pressure Purifier with One-Way Valve, Covert Black (CVTBK) 1899251
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Weight: 12.5 oz (354 g)
Size: Diameter 7.5 cm × Height 24.77 cm
Materials: Outer Bottle, Inner Press Cap: Polypropylene, Cartridge: ABS resin, Gasket: One-way valve: Silicone rubber, Inner Press Outer Rubber: Thermoplastic Elastomer
Contaminant removal rate: Virus removal rate 99.99% (Rotavirus, Norovirus, Hepatitis A virus, etc.), Bacteria removal rate 99.9999% (E. coli, Salmonella, Cholera, Dysentery, etc.), Protozoa removal rate 99.9% (Echinococcus, Giardia, Cryptosporidium, etc.) *Removal rates are based on data provided by Grayl ※The removal rates and descriptions are based on tests conducted by NSF (National Sanitation Foundation), an international water quality testing agency, in accordance with standards No. 42 and No. 53 for the removal of taste, odor, chlorine, turbidity, and harmful substances. These tests were used by Grayl to theoretically estimate the applicable pathogens and substances This is not based on testing conducted against all individual pathogens or substances, and does not guarantee any health safety Heavy metals, microparticles (such as microplastics), and chemical substances (such as PFAS) can be reduced by filtration ※Please be sure to read the instruction manual for details
Capacity: 500 mL (16.9 fl oz)

￥13,288 ￥14,300
02

エスケーマジック(SK Magic)

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SK Magic Eco Mini Faucet Direct Connection Water Purifier, No Construction Required, Easy Installation, Compact Design, High Removal 20 Items Clear, PFOA/PFOS Removal Test Complete
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

World recognized taste and design
Running Cost: 2.3 yen / 1L, very economical
No power supply
No assembly required, easy installation
Industry highest quality water filtration capacity cartridges

￥12,614
Best Value
03

トレビーノ
47% Off

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Toray Torayvino Water Filter Faucet, Direct Connection Type (7 Impurities Removed/30% Water Saving) Made in Japan, Slim SX705T Super Series
9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Trihalomethane Removal】Clears JIS 7 items Toray's high-tech material and hollow thread filters form a multi-layer structure that is useful in the medical field, and capture micro stains such as turbidity, iron rust, general bacteria, E.coli, and protozoa without compromising the mineral content
【Cartridge Replacement Indicator】Equipped with a replacement guide dial for easy understanding of replacement timing You can manually set the replacement guideline based on the water purification usage in 10-day increments
【30% water-saving function included】Naturally saves water with daily use
Equipped with 30% water saving function*1, trihalomethane removal, easy water flow switch, Made in Japan, easy to install. *1: When using raw water showers Compared to our product MK203X Flow rate is approximately 0.1 MPa of dynamic water pressure
Easy Water Flow Switching: You can easily switch the water flow with a lever at your hand

￥2,127 ￥3,980 47% Off
04

トレビーノ

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東レトレビーノ浄水ポット (高速ろ過) 1.2L［縦横置きタイプ］ PT502SV 浄水器ポット型高除去
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Washable and hygienic: The parts can be easily removed and washed in every corner
Fast filtering/short time filtering, vertical and horizontal types, with handle, high removal, washable, water filter capacity 1.2 L
Cartridge replacement is approximately 3 months (when using 0.6 gal (2 L) per day): It reduces the hassle of throwing away plastic bottles, making it economical and eco-friendly. Includes a dial that lets you know when to change the cartridge: The slider on the handle allows you to set the cartridge replacement time. You can see replacement guidelines at a glance
(Fast Filtering/Time-Saving Water Purify): It can be used quickly when you want to use it, so you can use it without worrying about waiting time or remaining power. Vertical and horizontal type: You can put it in your fridge door pocket or vegetable room, and it can also be stored on your fridge shelf
(Easy to use handle) The handle is designed to be easy to use by women and children. High removal type: JIS 12 items clear. You can drink delicious without damaging the minerals such as calcium and magnesium which are important to the body

￥2,782 ￥3,000
05

CLEANSUI

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【Genuine Product Japan-Made】 Cleansui CSP Series Water Purifier for Faucets, Direct Connection Type, LCD, with 1 Cartridge Included CSP911-WT, Removes PFOS/PFOA Organic Fluorocompounds
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

This filter has been tested using testing methods specified by the Japan Water Purifier Association (JWPA)'s JWPAS B standard. The tests confirmed that the filter is able to remove PFOS and PFOA
Size (D x W x H): 4.7 x 5.0 x 3.1 inches (119 x 126 x 79 mm); Weight: 10.9 oz (310 g) (when full of water: 15.2 oz (430 g))
Filtration Flow Rate: 1.6L/min
Filter Material Types: Hollow fiber membrane (polyethylene), ceramic, activated charcoal
Estimated Replacement Time for Filter Medium: 3 months (when using 2.6 gallons (10 L) per day)
Country of Manufacture: Japan

￥7,289
06

CLEANSUI

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【Genuine Product Japan-Made】 Cleansui MONO Series MD311-WT Faucet-Mounted Water Filter, 1 Cartridge Included, LCD Feature, LED Indicator Lights, Removes PFOS/PFOA Organic Fluorocompounds
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

This filter has been tested using testing methods specified by the Japan Water Purifier Association (JWPA)'s JWPAS B standard. The tests confirmed that the filter is able to remove PFOS and PFOA
Size: Width 153 x Depth 70 x Height 106 mm, Weight: 280 g (380 g when full of water), Power source: CR2032 x 1
Filtration Flow Rate: 1.6L/min
Filter Material Type: Hollow fiber membrane (polyethylene), ceramic, activated charcoal
Estimated Cartridge Replacement Time: 3 months when using 2.6 gallons (10 L) per day
Accessories: faucet installation adapter, MDC01S (replacement cartridge)

￥5,980
07

CLEANSUI

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Cleansui Direct Connection Mono Series Water Purifier Faucet with 1 Cartridge Matte Black MD1-BK PFOS/PFOA Organic Fluorine Compound Removal
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Material Type: ABS resin, Filter Type: Hollow yarn film (polyethylene), ceramic, activated carbon
Filter Replacement Estimate: 20.4 gal (900 L) *3 months (when using 2.2 gal (10 L) per day)
Country of Origin: Japan; Product Size (H x W x D): 4.1 x 5.9 x 2.4 inches (104 x 149 x 62 mm); Unit Weight: Approx. 9.8 oz (280 g) (when full:
Black accents your life: Matte black faucet direct connection water filter. Left or right switch design for left or right hand mounting to fit your sink
Altitude removes 17 + 3 substances of concern: 17 of the subjects to be removed as determined by the JIS S 3201 Household Water Filter Test Method and 3 subjects to remove the subjects determined by the Water Filter Association. Also verified to remove PFOS and PFOA, a type of organic fluorocarbon PFA

￥4,482
08

トレビーノ
31% Off

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Toray Trebino MK309SMX Cassetti Series Water Purifier, Direct Connection Type (High Water Pressure, High Removal, 13 Items, Clear, 30% Water Saving), Made in Japan
8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Wide Extra-Fine Shower with Minimal Water Splashing】The original water shower is an extra-fine shower that is gentle to the touch, reducing water splashing when washing dishes The spreading shower shape makes washing a breeze
【Switchable in 3 stages】Easily switch between shower purified water, raw water (shower), and raw water (straight) according to your needs
【High-speed filtration/time-saving water purification】Because the water purification speed is fast, it contributes to saving time on household chores even when using a lot of water for cooking With the new filtration system, we have achieved high removal efficiency and maintained the delicious taste while speeding up the water purification
【30% water-saving function included】Naturally saves water with daily use
30% water-saving function installed*1, high-speed filtration/time-saving purified water, wide*2 ultra-fine shower with less splashing, high removal type, made in Japan, washable spout cover, compact size, easy installation, *1: When using raw water shower Compared to our product MK203X Flow rate is approximately 0.1 MPa under running water pressure※2: Compared to our product MK307MX

￥4,164 ￥6,000 31% Off
09

Takagi

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Takagi H790WT6 Direct Connection Water Purifier Mini Neo White Water Filter Cartridge 1 Pack Compact Home Use Small PFOS PFOA Removal
8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

This water purifier is a direct faucet connection type that allows you to enjoy delicious water easily A minimalist design with a white body that blends into a chic-colored kitchen

￥5,506
10

SAKUTTO
20% Off

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Sakutto Portable Water Purifier, Electric Water Purifier, Filter, Outdoor, Disaster Preparedness Goods, Genuine Japanese Product, Designed for Outdoors
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

【Supervised by water professionals with strict water quality standards】Compliance with the Food Sanitation Law established by the Ministry of Health, Labour and Welfare is a given. We easily pass Japan's strict domestic inspection standards and conduct triple safety inspections (quality and water quality) with 1 overseas institution and 2 domestic Japanese institutions Even water quality testing professionals trust its safety and quality
【One-touch easy filtration & USB charging】This outdoor electric water purifier developed by our company is equipped with an automatic water supply function, and one-touch start saves the trouble of suction and intake Built with a large-capacity 4000mAh lithium battery, it allows for continuous use for approximately 240 minutes on a full charge, and can continuously filter over 120L of water on a full charge Additionally, it is equipped with a USB Type-C charging port, so you can charge it using a mobile battery or similar device when the battery runs out It can purify a large amount of water at once, so even if a natural disaster such as an earthquake, tsunami, or typhoon occurs, a large number of people, such as family or friends, can use it without worrying about drinking water It is highly compatible with emergency food that can be eaten with just water, and it is recommended by disaster prevention experts to store it together with emergency food as a disaster preparedness item
【 SAKUTTO Electric Portable Water Purifier 】Cumulative sales of "portable water purifiers" reached 100,000 units! From the SAKUTTO brand, an electric portable water purifier has been launched Compared to manual portable water purifiers, it ensures clean drinking water at high speed. The special internal structure of the unit thoroughly removes bacteria such as E. coli and cholera bacteria, as well as protozoan cysts. Then, a high-performance activated carbon filter effectively removes the sources of unpleasant odors such as chalky smell and miscellaneous flavors in the water, improving even unpleasant tastes and odors The SAKUTTO electric water purifier boasts high water purification performance, allowing it to filter river water, pond water, or muddy water into clear and clean drinking water that you can safely drink during emergencies such as disasters or water outages On the crowdfunding site, it was highly evaluated for its high functionality and design, and received a funding amount exceeding 140% of the target amount
【 Lightweight Compact Design 】Ideal for outdoor activities such as camping, hiking, and survival, this unit is the perfect size to be held in one hand Comes with a storage case with a carabiner for easy carrying Product Size: 6.1 inches × 3.1 inches × 3.1 inches; Product Weight: 410g
5-Stage Water Filtration System: Achieves the highest standard removal rate of 99.99999% By passing water through five stages (medical-grade PP cotton 1 + medical-grade PP cotton 2 + KDF activated carbon filter + high-performance hollow fiber membrane filter + high-performance activated carbon filter) on ultra-fine filters, bacteria are thoroughly removed!! By regularly replacing the filter, safety and taste are maintained, making it more economical and eco-friendly than heavy and bulky bottled drinking water!

￥7,980 ￥9,980 20% Off

10 Best water purifiers in 日本

GRAYL (GREYL) Water Purifier Ultra Pressure Purifier with One-Way Valve, Covert Black (CVTBK) 1899251

SK Magic Eco Mini Faucet Direct Connection Water Purifier, No Construction Required, Easy Installation, Compact Design, High Removal 20 Items Clear, PFOA/PFOS Removal Test Complete

Toray Torayvino Water Filter Faucet, Direct Connection Type (7 Impurities Removed/30% Water Saving) Made in Japan, Slim SX705T Super Series

東レ トレビーノ 浄水ポット (高速ろ過) 1.2L［縦横置きタイプ］ PT502SV 浄水器 ポット型 高除去

【Genuine Product Japan-Made】 Cleansui CSP Series Water Purifier for Faucets, Direct Connection Type, LCD, with 1 Cartridge Included CSP911-WT, Removes PFOS/PFOA Organic Fluorocompounds

【Genuine Product Japan-Made】 Cleansui MONO Series MD311-WT Faucet-Mounted Water Filter, 1 Cartridge Included, LCD Feature, LED Indicator Lights, Removes PFOS/PFOA Organic Fluorocompounds

Cleansui Direct Connection Mono Series Water Purifier Faucet with 1 Cartridge Matte Black MD1-BK PFOS/PFOA Organic Fluorine Compound Removal

Toray Trebino MK309SMX Cassetti Series Water Purifier, Direct Connection Type (High Water Pressure, High Removal, 13 Items, Clear, 30% Water Saving), Made in Japan

Takagi H790WT6 Direct Connection Water Purifier Mini Neo White Water Filter Cartridge 1 Pack Compact Home Use Small PFOS PFOA Removal

Sakutto Portable Water Purifier, Electric Water Purifier, Filter, Outdoor, Disaster Preparedness Goods, Genuine Japanese Product, Designed for Outdoors

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東レトレビーノ浄水ポット (高速ろ過) 1.2L［縦横置きタイプ］ PT502SV 浄水器ポット型高除去