Otaki Springwater (Yamanashi Prefecture) Complete Guide | Charm of Japan’s Top 100 Waters and Water Collection/Access Information
Otaki Springwater, located in Kobuchiizawa, Hokuto City, Yamanashi Prefecture, is known as a clear springwater nurtured by the rich nature of the Yatsugatake Mountains. As one of the springwater groups in the southern foothills of Yatsugatake, it was certified as one of the Ministry of the Environment’s “Japan’s Top 100 Waters” in 1985 (Showa 60), making it a popular water spot visited by not only local residents but also many people from within and outside the prefecture.
This article comprehensively introduces information you should know before visiting, including the characteristics, history, water quality, access methods, and surrounding facilities of Otaki Springwater.
What is Otaki Springwater? Reasons for Selection as Japan’s Top 100 Waters
A Part of the Yatsugatake Southern Foothills High Plateau Springwater Group
Otaki Springwater is certified as one of the Ministry of the Environment’s Top 100 Waters as part of the Yatsugatake Southern Foothills High Plateau Springwater Group. In addition to Otaki Springwater, this group includes Sanbuichi Springwater and Metori Springwater, all of which are groundwater from Yatsugatake that emerge at the surface.
Located at an elevation of approximately 820 meters in a high plateau area, water that has passed through volcanic geology undergoes natural filtration over many years and emerges at the surface in an extremely pure state. This natural filtration system creates Otaki Springwater’s high water quality.
Abundant Water Volume and Stable Water Temperature
The greatest characteristic of Otaki Springwater is its abundant water volume. Approximately 22,000 tons of water per day (some sources report over 22,000 tons at maximum) flows out, so a 20-liter tank fills to capacity in just about 10 seconds.
The water temperature remains stable throughout the year at approximately 11-13°C (average 12°C). This constant water temperature is evidence that the springwater emerges from deep underground and also contributes to water quality stability.
Highly Praised as One of the Most Delicious Waters in Yamanashi Prefecture
Among the many famous waters in Yamanashi Prefecture, Otaki Springwater is frequently evaluated as “the most delicious.” Its mineral balance is excellent, with a smooth mouthfeel that enhances the flavor of ingredients whether drunk straight or used in cooking.
It can be stored at room temperature for approximately one month, and it is common to see people visiting to collect water bringing large water containers and bottles to carry away large quantities.
Otaki Shrine and the Historical Background of the Springwater
The History of Otaki Shrine
Otaki Springwater emerges within the grounds of Otaki Shrine. This shrine has long been the center of local faith and has preserved the springwater as sacred throughout its history.
The shrine grounds are said to cover approximately 1,500 tsubo (about 5,000 square meters) and are enveloped in a solemn atmosphere with giant cedar trees standing in groves. Many of these cedars are several hundred years old, silently watching over both the springwater and the region’s history.
A Water Source Supporting Community Life
Otaki Springwater has long been used as drinking water for nearby residents. Today, it remains an indispensable water source for agriculture, supporting rice cultivation by serving as irrigation water for paddies.
Additionally, its abundant and pure water quality has been utilized for rainbow trout farming. Rainbow trout raised in Otaki Springwater have firm flesh, no unpleasant odor, and are delicious, becoming a popular local specialty.
Park Development Through Rural Landscape Formation Projects
In 1995 (Heisei 7), the area around Otaki Springwater was developed as a rural landscape formation project, transforming into “Otaki Springwater Park.” This development provided a comfortable environment for visitors to the springwater and enhanced its appeal as a tourist destination.
The park features manicured lawns and walking trails, becoming a gathering place visited by a wide range of people including families, couples, and photography enthusiasts.
Highlights and Ways to Enjoy Otaki Springwater Park
The Scenic View of Springwater Flowing from a Wooden Trough
The most iconic view of Otaki Springwater is the carved wooden trough from which springwater flows forcefully. The water flowing from this spout is highly transparent, and the cool sound it makes as it cascades offers visitors a refreshing and soothing sensation.
A collection area is set up below the spout where people bring containers to take home the famous water. Long lines often form on weekends and holidays, with visitors coming not only from the local area but from far away.
Natural Beauty Across All Seasons
Otaki Springwater Park is popular as a spot where visitors can enjoy scenic views across all seasons.
Spring (April-May): Fresh greenery is beautiful, with the vivid green of new leaves catching the eye. Soft light filtering through the cedar forest creates a fantastical atmosphere.
Summer (June-August): Enveloped in deep green, the park is cool and ideal as a summer retreat. The coldness of the springwater is pleasant, and you can see children enjoying water play.
Autumn (October-November): The fall foliage of Japanese maples is spectacular, with red and yellow colored leaves creating a beautiful contrast with the clear springwater. The autumn foliage season draws especially large crowds of tourists.
Winter (December-March): The springwater continues to flow without freezing even in snowy landscapes. The winter park, wrapped in silence, has a mysterious atmosphere.
Otaki Springwater Fishing Pond Experience
Within Otaki Springwater Park is the Otaki Springwater Fishing Pond. This fishing pond uses the springwater certified as one of Japan’s Top 100 Waters and primarily allows visitors to fish for rainbow trout.
Operating Season: April-October (closed in winter)
Closed Days: Tuesdays (may operate on holidays)
Fees: Set at affordable rates (rod rental available)
Fish caught here can be cooked on-site, and fresh rainbow trout grilled with salt is exquisite. It is particularly popular with families and provides a valuable experience for children.
Wasabi Fields and Agricultural Landscape
Around the park, wasabi fields utilizing clear springwater spread out. Wasabi is a delicate crop that grows only in extremely pure water, proving the high water quality of Otaki Springwater.
The scenery created by the green wasabi fields and springwater has a beauty that evokes the traditional Japanese landscape and is also popular as a photography spot.
Water Quality and Characteristics of Otaki Springwater
Water Quality Data and Components
Otaki Springwater is soft water that becomes naturally filtered by passing through volcanic geology, with extremely few impurities. Mineral content is well-balanced, with appropriate levels of calcium, magnesium, and other minerals dissolved in it.
Water quality tests consistently give high ratings, and it is recognized as safe water suitable for drinking. However, since it is natural springwater, some recommend boiling before consumption as a precaution.
Reasons for Possible Long-Term Storage
The reason Otaki Springwater can be stored at room temperature for approximately one month is its high level of purity. With few bacteria and organic matter, it can maintain quality for extended periods if stored in appropriate containers.
However, attention to the following points is necessary when storing:
- Use a clean container
- Store in a cool place away from direct sunlight
- Use quickly after opening
- Handle the container with clean hands when opening and closing
Usage in Cooking and Drinking
Otaki Springwater can be used in various ways, not just for drinking straight:
Drinking: Delicious when drunk plain, tea and coffee made with it have enhanced aroma.
Cooking: Perfect for cooking rice, making broth, preparing simmered dishes and other cuisines that highlight ingredient flavors.
Health and Beauty: Being soft water, it is gentle on skin and can be used as facial wash water.
Access Methods to Otaki Springwater
Access by Car
When using the Chuo Expressway:
- Approximately 5 minutes (about 3km) from Kobuchiizawa IC
- Proceed via Route 20, following directional signs
A parking lot is set up adjacent to the park and can be used free of charge. Congestion may occur on weekends and holidays, so an early visit is recommended.
Access by Train
JR Chuo Main Line:
- Get off at Kobuchiizawa Station, approximately 5 minutes by taxi
- Walking distance is approximately 30-40 minutes (about 2.5km)
Kobuchiizawa Station, where the Limited Express Azusa stops, offers convenient access from the Tokyo area. While there are bus routes from the station, service is limited, making taxi use more practical.
Surrounding Landmarks
En route to Otaki Springwater Park, there is a location where you pass under a JR Chuo Main Line overpass. This overpass serves as a landmark where you can sometimes see the Limited Express Azusa passing by.
Tourist Spots Around Otaki Springwater
Sanbuichi Springwater
Sanbuichi Springwater, another member of the Yatsugatake Southern Foothills High Plateau Springwater Group as Otaki Springwater, is located about 15 minutes by car. It features a unique water distribution system dividing water in three directions and has high historical value as a famous water spot.
Kiyosato High Plateau
The Kiyosato High Plateau spreading to the north of Kobuchiizawa is a highland resort area at 1,200 meters elevation. Pastures, museums, restaurants and other facilities are scattered throughout, offering views of the magnificent Yatsugatake landscape.
Yatsugatake Nature Interaction Center
This facility for learning about Yatsugatake’s nature is about 20 minutes by car from Otaki Springwater. Nature observation meetings and guided tours are regularly held, allowing deeper understanding of Yatsugatake’s ecosystem.
Hot Spring Facilities in Kobuchiizawa
Multiple day-use hot spring facilities are located in the Kobuchiizawa area, allowing visitors to enjoy a relaxing bath after visiting Otaki Springwater. Bathing while viewing the Yatsugatake nature is exceptional.
Precautions and Etiquette When Visiting
Water Collection Etiquette
When collecting water at Otaki Springwater, observe the following etiquette:
- Maintain order: Line up during crowded times and practice courtesy
- Avoid long occupation: Be mindful that others are waiting
- Don’t soil the surroundings: Pay attention to spilled water and container placement
- Show consideration when taking large quantities: Don’t collect more than necessary and remember consideration for others
Respect for the Shrine
Otaki Springwater is located within the grounds of Otaki Shrine. Act quietly so as not to interfere with worshippers and visit with respect for the shrine.
Cooperation with Nature Conservation
Collecting plants within the park or discarding trash is strictly prohibited. It is important that each person acts responsibly to preserve beautiful natural environments for future generations.
Winter Visits
In winter, road surfaces may freeze and snow may accumulate. Visit equipped for winter conditions, such as installing studless tires and carrying chains.
Basic Information for Otaki Springwater Park
Name: Otaki Springwater Park (Otaki Yuusui Koen)
Location: Kobuchiizawa, Hokuto City, Yamanashi Prefecture
Hours: Open 24 hours (nighttime visits are not recommended)
Closed Days: None
Admission: Free
Parking: Available (free)
Inquiries: Hokuto City Tourism Association
Fishing Pond Operation:
Operating Season: April-October
Closed Days: Tuesdays
Fees: Affordable rates (confirm details on-site)
Impressions from Visitors to Otaki Springwater
Visitors to Otaki Springwater have shared the following impressions:
“I visited several famous waters in Yamanashi Prefecture, but I found Otaki Springwater’s water particularly delicious. When I make coffee with the water I brought home, the aroma is completely different.”
“Since it’s developed as a park, we could visit with a picnic atmosphere. The children were thrilled at the fishing pond. Time spent in nature is valuable.”
“I visited during fall foliage season, and the contrast between the red Japanese maples and the transparent springwater was truly beautiful. I think it’s an ideal spot for photography.”
“The cedar forest at the shrine is solemn and enveloped in a sacred atmosphere. More than just collecting water, it feels like the spirit itself is purified.”
Otaki Springwater and the Natural Environment of Yatsugatake
Yatsugatake Geology and Springwater Mechanism
Yatsugatake is a group of volcanic mountains that began its activity approximately one million years ago. The lava layers and volcanic ash layers formed by volcanic activity function as a natural filtration system.
Rainfall and snowmelt water percolate deep underground and pass through geological layers over long periods, during which impurities are removed. In this process, minerals dissolve appropriately, creating high-quality springwater like Otaki Springwater.
Importance of Water Source Conservation Forests
The forests of Yatsugatake play an important role as water source conservation forests. Forests allow rainwater to percolate slowly into the ground, maintaining a stable springwater volume throughout the year.
Protecting this rich forest environment is key to preserving the future of Otaki Springwater.
Climate Change and Impact on Springwater
In recent years, concerns have arisen about changes in precipitation patterns due to climate change. Extreme rainfall and droughts could impact springwater volume and quality.
Sustainable water resource management and environmental conservation efforts will become increasingly important in the future.
Regional Promotion Using Otaki Springwater
Value as a Tourism Resource
Otaki Springwater contributes to the local economy as an important tourism resource for Hokuto City. Tourists visiting for the famous water also patronize surrounding restaurants, souvenir shops, and accommodation facilities, bringing economic benefits to the entire region.
Utilization in Specialty Product Development
In addition to rainbow trout farming, development of local sake and processed foods using Otaki Springwater is progressing. Products leveraging the brand power of famous water are gaining popularity as regional specialties.
Use as Environmental Education Site
Otaki Springwater Park is also utilized as an environmental education site where children learn about nature’s blessings and the importance of water. School field trips and nature observation meetings are regularly held, contributing to developing environmental awareness in the next generation.
Conclusion: Experience the Charm of Otaki Springwater
Otaki Springwater in Kobuchiizawa, Hokuto City, Yamanashi Prefecture, is a representative famous water spot of the Yatsugatake Southern Foothills High Plateau Springwater Group certified as one of Japan’s Top 100 Waters. Its abundant water volume of approximately 22,000 tons daily, stable water temperature maintained at about 12°C year-round, and deliciousness ranked among the highest in Yamanashi Prefecture continue to captivate many visitors.
The park, surrounded by the solemn cedar forest of Otaki Shrine, reveals different faces across the seasons—spring’s fresh greenery, summer’s coolness, autumn’s colored leaves, and winter’s stillness. In addition to water collection, visitors can enjoy various activities such as the fishing pond experience and nature walks.
Good accessibility—approximately 2 hours by Limited Express Azusa from Tokyo, and about 5 minutes by car from Chuo Expressway’s Kobuchiizawa IC—makes it a popular weekend getaway destination.
Listening to the sound of clear springwater flowing down and tasting the blessings nurtured by Yatsugatake’s nature, Otaki Springwater is a special place that reminds modern people of the harmony with nature they have begun to forget.
By all means, visit Otaki Springwater once and experience its clarity and beauty. It will surely be an unforgettable time that heals both mind and body.
