Nissaku Co., Ltd.

Nissaku Co., Ltd. (株式会社 日さく) is a Japanese engineering company specializing in well drilling (sakusei), groundwater-related facility construction, geological surveys and construction consulting, special civil engineering works, and the manufacture and sale of well equipment. It was founded in 1912 as Nihon Sakusen Goshi Kaisha (日本鑿泉合資会社) by Matsumoto Ryuji, with initial capital of 300,000 yen, and is headquartered in Omiya-ku, Saitama City, Saitama Prefecture. The company is privately held with capital of 100 million yen and had 308 employees as of September 2026. Its representative director and president is Naoki Wakabayashi. The company's core business lines include water-source wells, observation wells, hot-spring wells, water-soluble natural gas wells and geothermal wells; well maintenance services under the Aqua Freed brand and the Renewell method; groundwater-related equipment such as pumping and water-treatment systems; special civil engineering including landslide countermeasures and slope protection; geological and construction consulting; overseas projects; and the manufacture and sale of well equipment such as NST screens, pitless units and hand pumps. Nissaku holds ISO 9001 and ISO 14001 company-wide certification and is licensed by the Minister of Land, Infrastructure, Transport and Tourism for well-drilling, water-supply facility, plumbing, civil engineering, tobiku/doko, and landscaping works. Nissaku traces its origins to 1913, when it succeeded in drilling Japan's first full-scale deep well in Shimo-Ochiai, Tokyo, using an American rotary drilling rig to reach a depth of 160 meters. The company was incorporated in 1938 as Nihon Sakusen Co., Ltd., renamed Nihon Sakusen Tanko Co., Ltd. in 1939, and adopted its current name, Nissaku Co., Ltd., in 1972. It moved its headquarters to Saitama City in 2003 and celebrated its 110th anniversary in 2021. The company is recognized as a "Water Circulation ACTIVE Company" by the Cabinet Secretariat's Water Circulation Policy Headquarters and is registered as a "Saitama Super City Project Supporting Company."

Nissaku Co., Ltd. was founded on April 25, 1912, as Nihon Sakusen Goshi Kaisha (日本鑿泉合資会社) with capital of 300,000 yen by founder Matsumoto Ryuji, initially located in Marunouchi, Kojimachi Ward, Tokyo City. In April 1913, the company achieved Japan's first full-scale deep well drilling, using an American-made rotary drilling rig to bore a 160-meter-deep well in Shimo-Ochiai Village, Tokyo Prefecture (present-day Shimo-Ochiai, Shinjuku Ward, Tokyo). This early technical success established the company as a pioneer in Japanese well-drilling. On April 15, 1938, the business was incorporated as Nihon Sakusen Co., Ltd. (日本鑿泉株式会社). On March 1, 1939, it was renamed Nihon Sakusen Tanko Co., Ltd. (日本鑿泉探鉱株式会社). On January 21, 1941, the head office was moved to Kyobashi 2-8, Kyobashi Ward, Tokyo City (present-day Kyobashi 2-4-12, Chuo Ward, Tokyo). In the post-war period, the company increased its capital to 100 million yen on July 1, 1965. On January 1, 1972, it changed its name to Nissaku Co., Ltd. (株式会社 日さく). Capital was further increased to 150 million yen on July 9, 1985. On October 1, 2003, the head office was relocated to its current address at Sakuragicho 4-199-3, Omiya-ku, Saitama City, Saitama Prefecture. Capital was increased to 225 million yen on October 1, 2004, and to 450 million yen on June 29, 2006. On August 1, 2016, capital was reduced to 100 million yen. On April 25, 2021, the company celebrated its 110th anniversary, launching a dedicated anniversary website and commemorative video. Over its history, Nissaku expanded from well drilling into well maintenance, groundwater-related facility construction, special civil engineering, geological surveying and construction consulting, overseas projects, and the manufacture and sale of well equipment. It has obtained company-wide ISO 9001 and ISO 14001 certification and holds construction business licenses from the Minister of Land, Infrastructure, Transport and Tourism for well-drilling, water-supply facility, plumbing, civil engineering, tobiku/doko, and landscaping works. It is also registered as a construction consultant. The company has been recognized as a "Water Circulation ACTIVE Company" by the Cabinet Secretariat's Water Circulation Policy Headquarters and as a "Saitama Super City Project Supporting Company" by Saitama Prefecture.

• 2021

  Celebrated 110th anniversary.

• 2016

  Capital reduced to 100 million yen.

• 2006

  Capital increased to 450 million yen.

• 2004

  Capital increased to 225 million yen.

• 2003

  Head office relocated to Saitama City, Saitama Prefecture.

• 1985

  Capital increased to 150 million yen.

• 1972

  Renamed Nissaku Co., Ltd. (株式会社 日さく).

• 1965

  Capital increased to 100 million yen.

• 1941

  Head office moved to Kyobashi, Tokyo.

• 1939

  Renamed Nihon Sakusen Tanko Co., Ltd.

• 1938

  Incorporated as Nihon Sakusen Co., Ltd.

• 1913

  Succeeded in Japan's first full-scale deep well drilling, reaching 160 meters in Shimo-Ochiai, Tokyo, using an American rotary rig.

• 1912

  Founded as Nihon Sakusen Goshi Kaisha with capital of 300,000 yen by Matsumoto Ryuji in Marunouchi, Tokyo.

A long-established Japanese specialist in well drilling and groundwater engineering, combining over a century of drilling expertise with geological consulting, disaster-prevention works and overseas project experience.

• Water-source wells

• Observation wells

• Hot-spring wells

• Water-soluble natural gas wells and geothermal wells

• Aqua Freed well maintenance

• Renewell method

• Double casing insertion method

• Special jetting cleaning

• Double packer cleaning

• MVP underwater TV survey

• Pumping and water treatment equipment

• Emergency disaster water supply equipment

• Ground-source heat utilization equipment

• Landslide countermeasure works

• Slope protection works

• Anchor works

• Large-diameter intake well (Large Well) works

• Small-diameter propulsion works (ST drainage method)

• Geological survey and construction consulting

• NST screen

• Pitless unit NT-II

• Hand pump

1. 1日さく｜井戸掘削・地質調査・防災工事のプロフェッショナルnissaku.co.jp
2. 2会社概要 | 日さくnissaku.co.jp
3. 3免責事項 | 日さくnissaku.co.jp
4. 4BCPへの取り組み | 日さくnissaku.co.jp
5. 5Nissaku Co., Ltd. (Japan) - Wikidatawikidata.org