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Refill Plan Buy-Out Plan Price Simulator Quality How It Works FAQ Blog
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Store exterior Bottle display shelf Water dispenser tasting corner Self-serve refill counter

Water Store in Okinawa — Water Station Mihama

Pure, Safe Water — 99.9% PFOS-Free

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Refill Plan

For Convenience, Choose Refill

Refill Plan

1G = ¥100
  • Save money by bringing your own container
  • Bottles available in all sizes
  • Buy only the amount you need
  • Much cheaper than buying bottled water at the supermarket
  • Easy-to-start refill style
Calculate Now Why It's Safe to Drink
Water bottle

Buy-Out Plan – Own Your Water Dispenser

Water Dispenser Buy-Out Plan

Own a Premium Hot & Cold Water Dispenser – One Payment, Yours Forever

  • Special Price: ¥35,000 (White or Black)
  • Chilled & Hot water at your fingertips
  • Energy-saving, modern design
  • Take it home today – free same-day pickup

Exclusive Owner's Discount

Buy a dispenser and enjoy PFOS-free RO water refills for just ¥70 per gallon — forever!
Bring your empty bottle anytime for quick, eco-friendly, and affordable refills.

How to Get Yours

  1. Visit our store (Open 9:00–20:00)
  2. Choose your colour: White or Black
  3. Pay ¥35,000 — cash or major credit cards accepted
  4. Take it home today and start saving!

Price Simulator

Based on 8G per person per monthBased on 8G per person per month
Dispenser
Purchase Plan
¥1,320
Refill
Plan
¥1,800
Why It's Safe to Drink 📍 Get Directions
Water bottle

99.9% PFOS Removal for Safety

7-step system Click to enlarge

7-Step Purification System

We deliver safe, great-tasting water through a carefully selected 7-step purification process.

Water system Click to enlarge

Visible Safety – Every Day

You can view our production equipment anytime at our water store. We value transparency you can see for yourself.

Quality certification Click to enlarge

PFOS/PFOA Removal 99.9%+

Removes over 99.9% of PFOS and PFOA, achieving non-detectable levels for safe, worry-free drinking water.

Everyday Life Gallery

Family usage scene 1
Family usage scene 2
Family usage scene 3
Family usage scene 4
Family usage scene 5

How It Works

Bringing your own bottle
1

Bring Your Own Bottle

Bring any empty container you have at home, such as a PET bottle or water flask. We also sell dedicated bottles in-store.

Staff assisting with water filling
2

Staff-Assisted Refilling

No need to worry if you don't know your container's capacity.
Our staff will measure it and carefully fill the amount you request.

Payment process
3

Payment

Pay only for the amount of water you refill — no waste, and very economical.
We accept cash and major credit cards.

FAQ

We were founded in 1999, and this is our 26th year.

We are a long-established brand that has been offering safe, fresh water by in-store refilling since the time when the idea of "buying water" was not yet common in Okinawa.

There's a key difference because we are a water store, not a delivery service:

  • Produced fresh in-store and served immediately
    We produce water on-site using our RO purification system. Through our 7-step purification process, we thoroughly remove impurities to deliver safe, great-tasting water.
  • Peace of mind — see the process for yourself
    Our 7-step purification system and equipment are on display behind glass so you can observe exactly how we produce our water.
  • Refill by the gallon — just ¥100/G
    No contracts, subscriptions, or minimum orders. Refill only the amount you need in your own bottle.
  • Zero transport, lower environmental impact
    By picking up at the store and using reusable bottles, you help reduce CO₂ emissions from delivery and cut single-use plastic waste.

The key difference: freshness and transparency you can experience at our water store

Just 3 easy steps:

  1. Prepare Your Bottle
    Bring your own bottle. If you don't have one, reusable bottles (3–5G) are available for purchase at our water store.
  2. Water Filling
    Hand your bottle to our staff — we'll fill it with fresh RO water on the spot.
  3. Payment
    Refill price: ¥100/G. Pay at the register after filling (cash and credit cards accepted).

Open 9:00 AM – 8:00 PM (year-round). Refill only what you need, when you need it.

No. There are no contracts, monthly fees, or minimum purchase requirements.

We offer refill-only service at ¥100 per gallon — just get the amount you need, when you need it.

Basic Rate
¥100 per gallon
Pay-as-you-use pricing (pay only for what you use)
  • The average monthly consumption for one adult is 8–16 gallons → about ¥800–¥1,600
  • For families, estimate "number of people × 8–16 gallons"
    (Example: family of 4 would be 24–48 gallons → about ¥2,400–¥4,800)

Since this is not a flat-rate system, you only pay for what you actually use

The differences come down to three key points: number of steps, performance, and verification system:

1. Number of steps

Household filters typically have 1–2 stages, such as activated carbon or hollow fiber membranes. Our system uses a 7-step process, including RO membranes and UV sterilization.

2. Performance

Our 0.0001 μm RO membrane reduces PFOS/PFOA to below detectable limits. The result is ultra-soft water with a hardness of about 10 mg/L.

3. Verification system

We constantly monitor water quality using commercial-grade sensors, and we have third-party testing conducted once a year.

You can see the equipment in-store, so you can witness the scale and process difference for yourself when you visit.

Our patented in-store RO purification system produces water that is served within 24 hours of production at the latest.

Unlike bottled water, which can take days or even weeks due to transport and storage, we provide freshly filtered pure water on the spot — ensuring both taste and dissolved oxygen levels are fresh.

※ We also offer tasting comparisons so you can experience the difference yourself. Feel free to ask our staff!

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