■	2024 JICA Group Training Course “Comprehensive Engineering on Water Supply Systems: Basic Planning and Design for Water Supply System (A)” (October 18 to November 29, 2024)
■	2023 JICA Group Training Course “Comprehensive Engineering on Water Supply Systems: Basic Planning and Design for Water Supply System (A)” (November 10 to December 15, 2023)
■	9th IWA-ASPIRE Conference & Exhibition(Kaohsiung, Taiwan) (22-26 October, 2023)
■	International Training Course in America (10 - 17 September 2023)
■	ACE23　AWWA Annual Conference & Exposition (11-14 June, 2023)
■	International Training Course in Taiwan (20 - 25 February 2023)
■	12th JWWA/WRF/CTWWA Water System Seismic Workshop (30 January - 1 February, 2023)
■	2022 JICA Group Training Course “Comprehensive Engineering on Water Supply Systems: Basic Planning and Design for Water Supply System (A)” (October 20-November 29, 2022)
■	IWA World Water Congress & Exhibition 2022(Copenhagen) (11-15 September, 2022)
■	Association Networking Meeting (21,25 January 2022)
■	2021 JICA Group Training Course “Comprehensive Engineering on Water Supply Systems: Basic Planning and Design for Water Supply System (A)” (4-18 November, 2021)
■	SALGA-JWWA Joint Seminars for Water Supply Sector (28 January-19 March, 2021)
■	JICA Group Training Course “Comprehensive Engineering on Water Supply Systems: Basic Planning and Design for Water Supply System (A)” (1-5 February, 2021)
■	Indonesia-Japan Joint Workshop on Seismic Technology and its Standards for Water Supply System2020 (18-19 February, 2020)
■	JICA 2019 (Country Focus Program) MaWaSU2 “Waterworks administration/ Division of roles in water supply sector"（4-10 February, 2020）
■	The Lao-Japan Waterworks & MaWaSU2 Conference 2020（28-30 January, 2020）
■	International Training Course in America (11-17 November, 2019)
■	8th IWA-ASPIRE Conference & Exhibition (31 October-2 November, 2019)
■	11th JWWA/WRF/CTWWA Water System Seismic Workshop (9-11 October, 2019)
■	2019 JICA Group Training Course “Comprehensive Engineering on Water Supply Systems: Basic Planning and Design for Water Supply System (A)” (16 May–12 July, 2019)
■	ACE19　AWWA Annual Conference & Exposition (9-12 June, 2019)
■	Indonesia-Japan Joint seminar & Earthquake damage survey 2019 (3-13 March, 2019)
■	The Lao-Japan Waterworks & MaWaSU2 Conference 2019 (6-7 February, 2019)
■	International Events at IWA World Water Congress & Exhibition 2018 (16-21 September, 2018)
■	IWA World Water Congress & Exhibition 2018 (16-21 September, 2018)
■	2018 JICA Group Training Course “Comprehensive Engineering on Water Supply Systems:Basic Planning and Design for Water Supply System (A)” (17 May–12 July, 2018)
■	VIET WATER 2017 EXPO & FORUM (8-10 November, 2017)
■	International Events at JWWA General Assembly & Research Conference 2017 (25-27 October, 2017)
■	10th JWWA/WRF/CTWWA Water System Seismic Workshop (18-20 October, 2017)
■	7th IWA-ASPIRE Conference & Exhibition (11-14 September, 2017)
■	IWA LESAM 2017（20-23 June, 2017）
■	ACE17　AWWA Annual Conference & Exposition (11-14 June, 2017)
■	Water Korea 2017（21-23 March, 2016）
■	International Training Course in Australia “Good Practice, Issues and Challenges” (21 February-3 March, 2017)
■	ISO/TC 224/WG 6 Meeting (24, 25 January, 2017)
■	International Events in JWWA Annual Conference 2016 (10-11 November, 2016)
■	IWA World Water Congress & Exhibition 2016(9-14 Oct, 2016)
■	ISO/TC 224/WG 6 Meeting (27-30 September, 2016)
■	JICA Group Training Course “Comprehensive Engineering on Water Supply Systems(A)” (3 Jun–12 Aug, 2016)
■	ISO/TC 224/WG Meetings (27 June-2 July, 2016)
■	ACE16　AWWA Annual Conference & Exposition (19-22 June, 2016)
■	ISO Workshop “Global Services” (13-14 June, 2016)
■	Regional Economic Workshop “Tariffs for Water Services and Affordability” - IWA Specialist Group on Statistic and Economics-（17 May, 2016）
■	Water Korea 2016（21-23 March, 2016）
■	International Training Course in Australia - Good Practice, Issues and Challenges - (16-26 February, 2016)
■	IWA LESAM 2015 – Leading-Edge Strategic Asset Management （17-19 November, 2015）
■	International Events in JWWA Annual Conference2015 (21-23 October, 2015)
■	9th JWWA /WRF/CTWWA Water System Seismic Workshop (14-16 October, 2015)
■	The 10th ISO/TC 224/WG 6 “Asset Management” Meeting (28-30 September, 2015)
■	The 6th IWA ASPIRE Conference and Exhibition 2015 (20-24 September, 2015)
■	WATER KOREA 2015 (25-28 August, 2015)
■	JWWA – PERPAMSI Exchange Program 2015 “Capacity Building on Water Supply for Young leaders” (23 Aug – 30 Aug, 2015)
■	JICA Group Training Course “Comprehensive Engineering on Water Supply Systems 2015” (15 Jun- 19 Aug, 2015)
■	The 14th Seoul-Tokyo Forum 2015 (13-15 May, 2015)
■	ISO/TC 224 Plenary Meeting (13-17 April, 2015)
■	7th World Water Forum 2015 (12–17 April, 2015)
■	Indonesia Water & Wastewater Expo & Forum (IWWEF) / Water Malaysia 2015 (April, 2015)
■	IWA Workshop on Specialist Group on Statistics and Economics（19 March, 2015)
■	The 8th Meeting of ISO/TC 224/WG 6 “Asset Management” Berlin, Germany （Dec, 2014）
■	International Events in JWWA Annual Conference 2014 (30 October, 2014)
■	ISO/TC 224/WG 6 (Asset Management) meeting was held at JWWA
■	Presentation materials of IWA Workshop on “Water and Energy / Water Loss” is uploaded (April, 2014)
■	IWA Workshop on "Water and Energy / Water Loss" (March, 2014)
■	The 1st Preparatory Committee for IWA World Water Congress and Exhibition 2018（February 7th, 2014）
■	Tokyo to host 2018 IWA World Water Congress and Exhibition (Sep, 2013)
■	The 5th IWA–ASPIRE Conference and Exhibition in Daejeon, South Korea.(Sep, 2013)
■	IWA Leading-Edge Asset Management (LESAM) 2013 (Sep. 2013)
■	The 5th Meeting of ISO/TC 224/WG 6 “Asset Management” (Sep. 2013)
■	JWWA and PERPAMSI joint training course was held (August,2013)
■	IWA Executives visited Tokyo to Evaluate the Candidate City 0f 2018 World Congress
■	“Bid Committee for IWA 2018 Tokyo” was established and its 1st meeting was held. (March, 2013)
■	Tokyo Metropolitan government decided to stand as a candidate in 2018 IWA WWC selection(February, 2013)
■	7th IWA Workshop in Yokohama Japan (February, 2012)
■	Dr. Masaru Ozaki was newly appointed as Executive Director of JWWA, who took office in October 28, 2011 (November, 2011)
■	Earthquake Donation from Korea and Chinese Taiwan (April, 2011)
■	JWWA delegation to Mumbai, India (March, 2011)
■	2011 Tohoku-Pacific Ocean Earthquake5 (March, 2011)
■	2011 Tohoku-Pacific Ocean Earthquake4 (March, 2011)
■	2011 Tohoku-Pacific Ocean Earthquake3 (March, 2011)
■	2011 Tohoku-Pacific Ocean Earthquake2 (March, 2011)
■	2011 Tohoku-Pacific Ocean Earthquake (March, 2011)
■	Mr. Andrew Cook of WaterAid visits JWWA (February, 2011)
■	Cooperative Relationship between AWWA and JWWA (February, 2011)
■	6th IWA Workshop in Yokohama Japan (January, 2011)
■	Participated in the Annual Convention of the Indian Water Works Association (January, 2010)
■	JICA-Yokohama Forum/JWWA Workshop (January, 2010)
■	JWWA’s 78th General Assembly Meeting in Sakai City (November, 2009)
■	The 6th Taiwan-US-Japan Workshop on Water System Seismic Practices (October, 2009)
■	Organized the ISO/TC224 Working Group meeting in Tokyo (October, 2009)
■	The 3rd IWA–ASPIRE Conference and Exhibition in Taiwan (October, 2009)
■	WaterLinks Forum in Bangkok. (September, 2009)
■	Seoul-Tokyo Forum 2009 (September, 2009)
■	Political Regime change (September, 2009)
■	Water Facilities Damaged by Frequent Typhoon & Localized Torrential Rains (July and August, 2009)
■	Ministry of Health, Labour and Welfare establishes Guidelines for Asset Management (July, 2009)
■	JWWA has Publishes Revised Edition of “Guidelines and Instructions for Earthquake-Resistant Construction Methods for Waterworks Facilities” (July, 2009)
■	2009 Waterworks Week (1st–7th June) in Japan. (June, 2009)
■	JWWA published “PR Manual for water utilities” (May, 2009)
■	The 60th JWWA Annual Conference and Symposium (May, 2009)
■	The M.O.U. between Japanese Water Utilities and Emerging Countries (Apr. Aug. Sep. Dec, 2009)
■	H1N1 influenza (April 2009)
■	World Water Forum in Istanbul. Exchange session with Eau De Paris. (March, 2009)
■	JWWA published “Present Energy Conservation for Water Supply Facilities 2009” (March, 2009)
■	IWA Regional Workshop in Tokyo (February, 2009)
■	“Team Water Japan” launched (January, 2009)