We protect the water that supports every aspect of daily life.

Japanese  

Information

• 2026.7.29　Notice of Summer Holiday Closure

  Please be informed that our office will be closed for the summer holidays from August 8 to August 16.

  We will resume normal business operations on August 17.

  We apologize for any inconvenience and appreciate your understanding.

• 2025.12.25　Year-End and New Year Holidays
  Closed: December 27, 2025 – January 4, 2026
  Reopening: January 5,2026

• 2025.12.1　Our work uniforms have been updated.

Interrogation

　　　Phone: +81 (0)3 6801 6765

1-10-12 Toneri, Adachi-ku, Tokyo 121-0831, Japan