Translation guide
A device or material that removes impurities from water. In Japanese, the most common term is 浄水器 (jōsuiki) for household water purifiers, while フィルター (firutā) is used for replaceable filter cartridges. For industrial or large-scale filtration, ろ過装置 (roka sōchi) is used.
A device attached to a faucet or installed under the sink to purify tap water for drinking.
The standard term for a household water purifier. Often used for countertop or faucet-mounted types.
新しい浄水器を買いました。
I bought a new water filter.
この浄水器はカートリッジの交換が簡単です。
This water filter has easy cartridge replacement.
A water filter pitcher, like a Brita. Used for pour-through filtration.
浄水ポットで水をろ過しています。
I filter water with a water filter pitcher.
The replaceable part inside a water purifier that actually filters the water.
Commonly used for the replaceable filter cartridge. Can also refer to the whole device in casual contexts.
フィルターを交換する必要があります。
I need to replace the water filter.
このフィルターは3ヶ月もちます。
This filter lasts three months.
Equipment for filtering water in factories, pools, or water treatment plants.
General term for filtration equipment, often used in technical or industrial contexts.
工場ではろ過装置を使って水をきれいにしています。
The factory uses a water filter to clean the water.
A simpler term for a filter device, can be used for smaller industrial units.
プールのろ過器が故障しました。
The pool's water filter broke down.
A small filter used for camping, hiking, or emergencies to make water safe to drink.
Portable water purifier, often used for outdoor activities.
登山には携帯浄水器を持っていきます。
I take a portable water filter when mountain climbing.
A water bottle with a built-in filter, like LifeStraw bottles.
浄水ボトルがあれば、どこでも安全な水が飲めます。
With a filter water bottle, you can drink safe water anywhere.
浄水器 refers to the whole water purification device, while フィルター usually means the replaceable filter inside. In casual speech, フィルター can sometimes mean the whole device, but it's clearer to use 浄水器 for the appliance.
浄水器のフィルターを交換した。
I replaced the filter of the water purifier.
Specifically the cartridge unit. Often used in product manuals.
浄水器のカートリッジを新しいものに取り替えてください。
Please replace the water filter cartridge with a new one.