Secure your seat at the world’s prime event shaping our water future

Become an
IWA member


Specialist Groups








Strong Network

Until 30 April 2018
LIC student €345
LIC IWA member €495
LIC non-members €595
Student €395
IWA Member €795
Non-member €995
From 1 May until 30 June 2018
LIC student €395
LIC IWA member €595
LIC non-members €695
Student €495
IWA Member €995
Non-member €1195


Presenter IWA member €895

Presenter non-member €1095

Presenter student €445

LIC Presenter IWA member €545

LIC Presenter non-member €645

LIC Presenter student €370

From 31 March until 1 July 2018
1 July to 9 September 2018
LIC student €445
LIC IWA member €695
LIC non-members €795
Student €545
IWA Member €1095
Non-member €1295
10 September 2018 onwards
LIC student €545
LIC IWA member €795
LIC non-member €895
Student €645
IWA Member €1245
Non-member €1445

All delegate registration prices include attendance at the opening ceremony and welcome reception; congress sessions; exhibition; and lunches, morning and afternoon teas.

  1. Membership of IWA will be verified and membership status is not transferable. If the member number supplied above is incorrect no discount will apply.
  2. Student rate conditions apply. While collecting your badge, you will be asked to show your student ID.
  3. LIC means low-income country. For a complete list go to MEMBERSHIP INFORMATION and scroll down to the bottom of the page.

Become an IWA member

IWA membership will give you an automatic discount on your delegate and exhibitor registration. Meanwhile, You will enjoy a minimum of 1 year of receiving The Source Magazine, access to IWA-Connect, featuring exclusive online content and further discounts on IWA publications and discounts to all other IWA events. 


Presently, the Japanese Ministry of Foreign Affairs grants Visa waivers/exemptions to approximately 68 countries with special agreements with Japan. If you are unsure of whether or not you need to apply for a short-term Visa to enter Japan in order to attend the IWA WWC&E 2018, please consult this page.

If your country is not listed, then you will need to apply for a Visa. You can contact the Embassy of Japan, or the nearest Consulate of Japan in your home country to receive guidance on the application process and necessary documents you will need, please refer here for more information. Alternatively, we recommend you apply for your Visa through a local agency, it is quicker and easier to obtain a tourist visa than to get a visa through the Japanese Embassy and Consulate.

If you require a VISA please consult with your local travel agency for a short term visit visa (Tourist Visa).


You will need to have the following before you submit your request to Convention Linkage for your Letter of Invitation:

  • Details of your planned itinerary (all daily activities while staying in Japan).
  • Tentative flight arrival/departure information including flight time, flight number, etc.
  • Your planned hotel name, address, phone number.
  • The title and address of the embassy/consulate in your country you are using to secure your visa.
  • All passport information.
  • An ability to use correct English spelling, punctuation, grammar, and capitalization.

Letter of Invitation

A Letter of Invitation is an official document which confirms a registration payment and extends an official invitation to the paid registrant to attend and participate in the upcoming conference. It provides you with an official reason to come to Japan. It may be required by your university for administrative purposes, and will form one of the documents required for visa application if you are from a country that does not have a visa exemption agreement with Japan.

In order to qualify for a Letter of Invitation, you must meet both of the following criteria:

  • Be a registered audience member
  • Have paid the conference registration fee in full or a deposit

Subject to approval, all letters of invitation will be sent by email as a PDF attachment and a physical copy mailed to your residence or place of work. Please provide ample time for this to be processed.

Please note

  • Under no circumstances shall IWA provide a Letter of Invitation or Visa application paperwork to any interested party who has not met the two criteria listed above.
  • All questions/concerns regarding the status of your VISA should be directed to Convention Linkage.
  • IWA is not authorised to assist with the VISA process.
  • IWA will not provide letters of guarantee. Should your application be denied, IWA cannot change the decision of the Japanese Ministry of Foreign Affairs, nor will IWA engage in discussion or correspondence with the Ministry of Foreign Affairs or the Embassy of Japan on behalf of the applicant.

We recommend you apply for your visa as soon as possible, as processing times may vary according to location and ​the level of applications received.

Letter of Guarantee

The conference organisers would like to underline the difference between a Letter of Invitation and a Letter of Guarantee. Depending on your professional situation, background and nationality, you may be required to submit a Letter of Invitation and/or Letter of Guarantee.

A Letter of Guarantee is a letter in which an individual or body agrees to be legally and financially responsible for you during your stay in Japan. You may know an individual or institution in Japan who is willing to act as a guarantor, or, if you have no connection with the country, the Japanese Ministry of Foreign Affairs may find that it is acceptable to have your university act as the guarantor. IWA cannot provide Letters of Guarantee.


The best hotel and apartment deals in town, selected for the IWA World Water Congress 2018 delegates.

We’ve developed a how-to guide to help you convey the direct benefits to your employer of why attending the IWA World Water Congress & Exhibition.

Justify your attendance, is a guide you can download and adapt to suit your needs: Employer letter, Cost overview and Benefit template.

If you have difficulties with online registration please contact our registration company Ozaccom+ at

Information desks can be found in the international arrival lobby of Narita and Haneda airports.

Book your ticket for the Project Innovation Awards  evening!

Monday, 17th September

PIA Awards Night & Gala Dinner 2018
Date: Monday 17 September 2018
Time: Cocktail reception begins 18:45. Dinner and awards presentation begins 19:30. Finish by 23:00.
Dress code: Business Formal/Black Tie Optional

Venue: Hilton Odaiba Hotel, Tokyo

Ticket prices: 100 EUR non-IWA members; 75 EUR members
Tickets available: 126 tickets available for general sale

Join us in Copenhagen! See you in...