Kumano Shimizu Clear Water, Chiba Prefecture | Complete Guide to the Sacred Spring Associated with Kobo Daishi, Selected as One of Japan’s Top 100 Waters
The “Kumano Shimizu” (清水) that springs forth in Chonan Town, Chosei County, Chiba Prefecture, was certified as one of Japan’s Top 100 Waters in 1985 (Showa 60) by the Ministry of the Environment (then the Environmental Agency). This is the only water source in Chiba Prefecture to receive this designation. This spring water, which carries legends of the monk Kobo Daishi Kukai, has been cherished by local residents as a precious water resource and continues to be a popular tourist destination visited by many.
This article comprehensively explains everything you should know before visiting, from the historical background of Kumano Shimizu to detailed on-site information, access methods, and nearby facilities.
Table of Contents
- Overview and Characteristics of Kumano Shimizu
- The Kobo Daishi Legend and the Origins of “Kobo’s Sacred Spring”
- History as a Spa Resort in the Muromachi Period
- Background of Top 100 Waters Designation and Water Quality Characteristics
- Facilities Guide to Kumano Shimizu Park
- Access Methods and Transportation Information
- Nearby Tourist Attractions and Dining Facilities
- Precautions and Etiquette When Visiting
Overview and Characteristics of Kumano Shimizu
Kumano Shimizu is a natural spring water located at 2388 Satsubo, Chonan Town, Chosei County, Chiba Prefecture. It is said that this clear water, which springs forth at a rate of approximately 48 liters per minute, has never dried up even during prolonged periods of sunshine, making it an important water source with a long history for the region.
Characteristics of the Spring Water
Kumano Shimizu’s water is clear and pristine spring water from deep underground, maintaining nearly constant temperature throughout the year. This stable water quality and abundant water volume have supported people’s livelihoods since ancient times.
The area around the spring has been developed as “Kumano Shimizu Park,” where water flowing from the source becomes a small stream that nurtures abundant vegetation within the park. It is a peaceful spot where visitors can enjoy nature in all four seasons while experiencing the clear flowing water firsthand.
Chiba Prefecture’s Only Top 100 Waters
In 1985 (Showa 60), when the Environmental Agency (now the Ministry of the Environment) designated 100 outstanding springs and rivers nationwide as Japan’s Top 100 Waters, Kumano Shimizu was the only selection from Chiba Prefecture. This designation was based on comprehensive evaluation not only of water quality but also of the region’s historical and cultural connections and conservation efforts.
As Chiba Prefecture’s only Top 100 Waters selection, it has become a tourist resource attracting visitors from throughout the prefecture and beyond, and is carefully preserved as an important regional resource for Chonan Town.
The Kobo Daishi Legend and the Origins of “Kobo’s Sacred Spring”
Kumano Shimizu is also known by the alternative name “Kobo’s Sacred Spring” (弘法の霊泉). This name originates from a legend associated with Kukai (Kobo Daishi), a high monk from the Heian period.
The Legend of Kobo Daishi’s Water
According to tradition, when Kobo Daishi was traveling throughout the country, he stopped at this location. At that time, the region was suffering from severe drought, and farmers were struggling greatly due to water shortages.
Seeing the farmers’ suffering, Kobo Daishi struck the ground with his staff (shakujo) that he carried, and through his spiritual power is said to have caused clear water to spring forth. According to the legend, the farmers were saved from water shortage through this miracle, and abundant water has continued to spring from this location ever since.
Water Legends of Kobo Daishi Throughout Japan
Water legends associated with Kobo Daishi remain in many locations throughout Japan. This is believed to stem from Kukai’s travels throughout the country as part of his efforts to propagate Shingon Buddhism, during which he shared civil engineering and irrigation techniques.
The legend of Kumano Shimizu may not be mere mythology but rather suggest the possibility that Kobo Daishi actually visited this location and was involved in some form of water source development. In any case, this legend is connected to the faith of local residents and tells the story of their protection of Kumano Shimizu as a special sacred spring.
History as a Spa Resort in the Muromachi Period
An indispensable part of Kumano Shimizu’s history is its prosperity as a spa resort in the Muromachi period.
The Tsurugaoka Hachimangu Shrine’s Territory and Spa Resort
During the Muromachi period, the Chonan Town area was territory of the Tsurugaoka Hachimangu Shrine in Kamakura, which was revered as the guardian deity of the warrior class. According to a historical document called the “Tsurugaoka Jisho Nikki,” records show that this area thrived as a spa resort designated by Tsurugaoka Hachimangu for approximately 100 years.
At that time, this area was called “Yuya” (湯谷), and the current reading of “yuya” in the name “Kumano Shimizu” derives from this historical place name. We can imagine the appearance of many people visiting as spa guests and recuperating while receiving the blessings of the clear water.
From Spa Resort to Water of Renown
The role of the spa resort changed over time, but the spring water itself continued to be used as an important water source for the region. From the Edo period onward, it continued to support the people’s daily lives as agricultural and domestic water, and in modern times has found new value as a tourist resource selected as one of Japan’s Top 100 Waters.
Throughout this long history, Kumano Shimizu has continued to spring forth without ever drying up, and this has become a source of pride for the local people.
Background of Top 100 Waters Designation and Water Quality Characteristics
What Are Japan’s Top 100 Waters?
Japan’s Top 100 Waters is a selection of 100 springs and rivers designated in 1985 (Showa 60) by the then-Environmental Agency with the goal of preserving clear water environments throughout the country. Evaluation criteria include not only good water quality but also deep connection to local life, culture, and history, as well as conservation activities conducted by local residents.
Water Quality of Kumano Shimizu
The water quality of Kumano Shimizu possesses the clarity and stability characteristic of groundwater. The abundant spring water volume of 48 liters per minute indicates the existence of a rich underground water vein, with clear water filtered through geological layers over many years.
However, as the Ministry of the Environment also points out, selection as one of Japan’s Top 100 Waters does not necessarily guarantee suitability for drinking. If you wish to drink the water, it is recommended that you confirm the latest water quality information with local authorities such as Chonan Town Hall.
Conservation Efforts
Chonan Town continues to conduct environmental improvements and cleaning activities to preserve Kumano Shimizu as a precious regional resource. Local residents, tourism associations, and local government cooperate in efforts to pass this water on to future generations.
Visitors can also participate in conservation activities by following basic etiquette such as taking garbage with them and not polluting the water source.
Facilities Guide to Kumano Shimizu Park
The area around Kumano Shimizu’s source has been developed as “Kumano Shimizu Park,” where facilities have been prepared for visitors to spend time comfortably.
Overview of the Park
Within the park, clear water flowing from the spring becomes a small stream that winds through the area, surrounded by abundant greenery. Plants nourished by the water’s blessing grow throughout the park, and visitors can enjoy beautiful scenery especially during the fresh greenery of spring and the autumn foliage.
Hiking trails have also been developed, allowing visitors to enjoy nature at a leisurely pace. Since benches are installed, resting while listening to the sound of water is also recommended.
Shimizu no Sato Kumano Direct Sales Shop
Near the park is the “Shimizu no Sato Kumano Direct Sales Shop,” where visitors can purchase fresh vegetables and agricultural products from the local area, as well as processed foods such as pickled plums. The shop is lined with local specialty products and seasonal agricultural items, and functions as a place to support regional agriculture.
The direct sales shop, which also offers interaction with local people, has become an attractive spot for tourists.
Ganko Teahouse
Next to the direct sales shop operates “Ganko Teahouse,” a soba restaurant. It serves dishes made with Kumano Shimizu water, allowing visitors to taste the blessings of the water. Dishes made with local ingredients will enrich the memories of your visit. Please note that business days and hours may vary, so it is recommended to confirm before visiting.
Parking and Restroom Facilities
The park has parking facilities, making it possible to visit by private car. Basic facilities such as restrooms are also provided, so families can visit with peace of mind.
Access Methods and Transportation Information
There are two main options for accessing Kumano Shimizu: by private car and by public transportation.
Access by Private Car
When using the Kensodo Expressway:
- Approximately 15 minutes from Kensodo “Mobara-Chonan IC”
- Follow the prefectural road after exiting the IC, and proceed following directional signs
Travel Times from Major Cities:
- From Tokyo area: Approximately 1.5 to 2 hours
- From within Chiba City: Approximately 1 hour
The opening of the Kensodo Expressway has significantly improved access from the greater Tokyo area. When using a car navigation system, searching for “2388 Satsubo, Chonan Town, Chosei County, Chiba Prefecture” or “Kumano Shimizu Park” is convenient.
Access by Public Transportation
When using train and bus:
- Get off at “Mobara Station” on the JR Sotobo Line
- Take a local bus from Mobara Station for approximately 30 minutes
- Walk from the nearest bus stop
Since the number of buses is limited, it is strongly recommended to confirm the schedule in advance. Especially during holidays and tourist season, it is wise to plan your round-trip times beforehand.
Using Taxis
It is also possible to take a taxi from Mobara Station. The journey takes approximately 20-25 minutes, making it a convenient option for multiple visitors or those with time constraints.
Nearby Tourist Attractions and Dining Facilities
By visiting nearby tourist attractions when you visit Kumano Shimizu, you can enjoy a more fulfilling trip.
Tourist Spots in Chonan Town
In addition to Kumano Shimizu, Chonan Town has other attractive tourist resources. Historic temples and shrines, spots where you can enjoy nature, and other attractions are scattered throughout if you have time to spare.
Within the town are facilities where you can learn about local history and parks where you can enjoy seasonal flowers. You can obtain the latest tourism information from Chonan Town Hall’s tourist information center or the tourism association’s website.
Dining Facilities in the Surrounding Area
In addition to “Ganko Teahouse” mentioned earlier, there are dining establishments in the Chonan Town area that serve dishes made with local ingredients. It is also fun to search for restaurants and eateries where you can enjoy the abundant agricultural and marine products of the Boso Peninsula.
Accommodations
If you wish to stay longer, there are accommodations in Mobara City and surrounding areas. You can choose from hot spring inns, business hotels, and other options according to your budget and preferences.
By creating a tour plan that combines other tourist destinations on the Boso Peninsula, you can enjoy an even more fulfilling trip.
Precautions and Etiquette When Visiting
When visiting Kumano Shimizu, please be mindful of the following points to help preserve this precious natural environment.
Regarding Drinking the Water
Although Kumano Shimizu is selected as one of Japan’s Top 100 Waters, as the Ministry of the Environment has cautioned, the designation does not necessarily guarantee suitability for drinking.
Water quality may change depending on the season and weather conditions. If you wish to drink the water, be sure to contact the Chonan Town Hall Industrial Promotion Division (telephone: 0475-46-3397) in advance to confirm the latest water quality test results and whether the water is safe for drinking.
Etiquette for Environmental Preservation
Always take trash with you:
To protect the natural environment, always take your trash with you. Since there may be no trash cans within the park, it is recommended to bring garbage bags.
Do not pollute the water source:
Do not use detergent or soap at the spring or stream, or throw trash into the water. Individual consideration is crucial to pass this precious water source to future generations.
Treat plants and animals with care:
Do not collect plants or capture animals within the park. It is recommended to enjoy nature in its natural state and preserve memories through photography.
Visiting Season and Clothing
Kumano Shimizu can be visited year-round, but each season offers different attractions.
Spring: Beautiful fresh greenery and comfortable weather
Summer: The cool waterside provides relief from heat
Autumn: Enjoy colorful autumn foliage
Winter: Quiet and serene atmosphere
Since the park features walking trails that take advantage of natural terrain, it is recommended to wear comfortable walking shoes. Particularly after rain, the ground may be slippery, so caution is necessary.
Photography
Photography is freely enjoyed, but please be considerate of other visitors. When visiting as a group, be careful not to block the walking trails.
When posting to social media, it would be appreciated if you shared accurate information along with the importance of preserving this precious natural environment.
Conclusion: Visiting Chiba Prefecture’s Only Top 100 Waters
Kumano Shimizu is a Chiba Prefecture representative tourist destination with multilayered attractions: the legend of Kobo Daishi, its history as a spa resort in the Muromachi period, and its modern designation as one of Japan’s Top 100 Waters.
Visitors can see up close the clear water springing forth at a rate of 48 liters per minute and leisurely enjoy nature in the well-maintained park. With well-equipped nearby direct sales shops and dining facilities, visitors can also experience local culture and food.
With improved access from the greater Tokyo area following the opening of the Kensodo Expressway, it is ideal as a day-trip destination. By creating a tour plan that combines other tourist attractions on the Boso Peninsula, you can enjoy an even more enriching trip.
When visiting, please follow etiquette to preserve this precious natural environment and fully savor the blessings of Chiba Prefecture’s water of renown. Kumano Shimizu will provide moments of peace as you escape the bustle of the city and touch nature and history.
Chonan Town Hall and the tourism association provide the latest tourism information and water quality information, so it is recommended to check with them before visiting. Discover Chiba Prefecture’s hidden charms at Kumano Shimizu, which displays different beauty in each of the four seasons.
