Outline

RECWET booklet
(Jul 2025 edition)

Since the establishment in 2000, we have been conducting research and development of cutting-edge water environment control technologies using diverse approaches based on the integration and collaboration of basic sciences such as microbial ecology and practical studies such as water treatment engineering in order to meet the social challenges and expectations of realizing a sustainable water environment.
In 2019, the center was reorganized into three divisions. We are currently promoting research and education in collaboration with water-related researchers in a wider range of fields within the university, including Chemistry and biotechnology, Civil engineering and Material engineering. Additionally, Laboratory of International Wastewater-based Epidemiology, which was established in March 2024, is working to implement technologies developed through industry-academia collaboration in society. Furthermore, in October 2024, Shinshu University/The University of Tokyo Collaboration Branch Office was established, aiming to integrate advanced research in the water field by collaborating with Shinshu University.
Moreover, our activities in the water fields, including international cooperation, human resource development, and hosting international conferences, mainly conducted in Asia, are gaining international recognition. We will continue to promote research and education activities with the aim of becoming an international research hub for water environmental engineering. We would appreciate your continued support for the activities of the center.

News & TopicsArchive>

2025/11/14
[Award] Clarivate Highly Cited Researchers 2025 (Project Prof. Kitajima) Project Prof. Masaaki Kitajima has been selected as "Clarivate Highly Cited Researchers 2025". This is the fourth consecutive year since 2022.
The news was featured in the Topics on the School of Engineering website (in Japanese).
Highly Cited Researchers (Website):https://clarivate.com/highly-cited-researchers/
2025/11/12
[Lecture] Keynote lecture at Water Treatment Seminar (Prof. Katayama)

Prof. Hiroyuki Katayama (Water Quality Control Technologies and Materials Development) gave a keynote speech at the Water Treatment Seminar - From Virus Measurement to Digital Optimization - (Tokyo/Osaka) hosted by Central Kagaku Corp., a manufacturer of water quality measuring instruments. (Japanese)

● 片山浩之 (2025) 水の安全性確保のためのウイルス測定 [基調講演], 水処理セミナー~ウイルス測定からデジタル最適化まで~, セントラル科学株式会社, Nov 11 東京会場/Nov 12 大阪会場.
2025/11/11
[Publication] Paper in ACS ES&T Water (Project Researcher Angga et al.)

The joint research team, consisting of Dr. Made Sandhyana Angga, Dr. Vu Duc Canh, Project Prof. Hiroyuki Katayama, Project Prof. Masaaki Kitajima (International Wastewater-based Epidemiology) and Hokkaido University, demonstrates the feasibility of wastewater-based epidemiology for monitoring sexually transmitted infections in a community using the highly sensitive EPISENS-M method. The paper has been published online in ACS ES&T Water.

● Made Sandhyana Angga, Vu Duc Canh, Yuki Nakaya, Hisashi Satoh, Hiroyuki Katayama, and Masaaki Kitajima (2025) Monitoring Sexually Transmitted Infection-Associated Pathogens in Municipal Wastewater in Japan, ACS ES&T Water, ASAP.
https://doi.org/10.1021/acsestwater.5c00893
2025/11/10
[Event] Report of the RECWET-RCEES Joint Seminar

The Laboratory of International Wastewater-based Epidemiology, RECWET organized a joint seminar as follows. On that day, they had a total of eight visitors from China, led by Prof. Min YANG from the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (RCEES), who has published nearly 300 papers so far and are highly renowned.

Title:RECWET–RCEES Joint Seminar on Wastewater & Environment Surveillance for Health Risk Management
Date and Time:15:00-18:00, Nov 10 (Mon) 2025
Place:Room 802 (8F, Engineering 14th Bldg.)

2025/11/01
[Conference] 4 presentations in collaboration with pediatric researchers (Project Prof. Kitajima)

4 oral presentations will be given at the 57th Annual Meeting of the Japanese Society for Pediatric Infectious Diseases. The presenters are the researchers from the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences, who conduct joint research with Project Prof. Masaaki Kitajima.

● Yuta Aizawa, Jun Tachikawa, Rie Habuka, Kazuhiro Horiba, Masaaki Kitajima, Akihiko Saitoh (2025) Detection of Recombinant Parechovirus-A5 in Neonatal Sepsis-like Illness and its Community Circulation Confirmed by Wastewater Surveillance.
● 太刀川潤、相澤悠太、対馬航太朗、羽深理恵、幾瀨樹、山中崇之、樋浦誠、本間丈成、大久保総一朗、遠山潤、阿部裕樹、北島正章、齋藤昭彦 (2025) 下水サーベイランスによるエンテロウイルス-D68の系統樹解析.
● 対馬航太朗、太刀川潤、相澤悠太、羽深理恵、幾瀨樹、山中崇之、樋浦誠、本間丈成、大久保総一朗、遠山潤、阿部裕樹、北島正章、齋藤昭彦 (2025) 下水サーベイランスによるエンテロウイルス-D68流行の早期検出.
● 羽深理恵、太刀川潤、Nur Irma Safitri、相澤悠太、山中崇之、阿部裕樹、大久保総一朗、樋浦誠、小林悠、遠山潤、本間丈成、北島正章、齋藤昭彦 (2025) 下水サーベイランスによる小児呼吸器感染症予測の検討.
  第57回日本小児感染症学会総会・学術集会, Nov 8-9, グランドニッコー東京ベイ舞浜