Commencement of Groundwater Usage in Kobe City, Hyogo Prefecture – The Ultra-Soft Water of Safi Spa Maiko and Its Appeal

We are pleased to announce the successful completion of well drilling works at our facility, and the commencement of groundwater utilization from 2026. This water, drawn from deep underground in Kobe City, Hyogo Prefecture, is exceptionally characterized as ultra-soft water. By supplying this water to various baths and sauna facilities at Safi Spa Maiko, we will provide an even higher quality relaxation environment for our guests.

This article introduces the features of Kobe City’s groundwater, the specific applications of ultra-soft water at our facility, and the key points we want our guests to experience.

About Kobe City’s Groundwater and the Well Drilling Project

Safi Spa Maiko conducted the well drilling using the latest technology to extract groundwater while minimizing impact on the surrounding environment. Following geological and water quality surveys, safety and excellent water quality have been confirmed. The well drilling was completed within 2025, and operations began in 2026.  

The groundwater is naturally filtered through underground layers, resulting in very pure water with minimal impurities. The groundwater in Kobe City not only meets water quality standards but is also specially refined to achieve ultra-soft water characteristics through precise hardness adjustments.

Characteristics and Benefits of Ultra-Soft Water

The groundwater used at our facility is classified as ultra-soft water, a rare type in the Rokko Mountain range. Soft water has low hardness, and ultra-soft water indicates an extremely low hardness level. Ultra-soft water is gentle on the skin and has a very smooth texture, making it ideal for bathtubs and cold plunge pools.  

Ultra-soft water enhances soap lather and increases cleansing effects. It also provides a smooth and moist sensation on the skin, helping to prevent dryness after bathing. Moreover, when used in cold plunge pools, it is known to deliver comfortable perceived temperature and superior cooling efficiency.

Specific Applications of Ultra-Soft Water at Safi Spa Maiko

The groundwater (ultra-soft water) to be supplied starting in 2026 will be utilized in the following locations within the facility.

– Luxury Bath

tubs and cold plunge pools

– Safi Spa Maiko Men’s Sauna cold plunge pools, foot baths, and sauna bathing tubs in the Mirumiru sauna room

※ Specific timings will be announced separately.

The ultra-soft water supplied in these areas will create a more comfortable and relaxing space for all users. In particular, the luxury bath tubs allow guests to feel the gentle water texture, providing an ideal environment to soothe daily fatigue.  

At the men’s sauna, the cold plunge pools and foot baths take advantage of the ultra-soft water’s cooling efficiency and skin-friendly properties. The sauna bathing tubs inside the “Mirumiru” sauna room utilize the same water quality, enhancing the synergistic effects of sauna and water bathing.

Summary

With the introduction of ultra-soft groundwater from Kobe City, Hyogo Prefecture, Safi Spa Maiko will realize further service enhancements from 2026 onward. The groundwater is safe and of high quality, ensuring a comfortable water bathing experience in our luxury bath tubs and various sauna facilities.