Visa & Invitation Letter Information
If you are traveling to HYDROVISION International® from outside the United States., we suggest you build in ample time before your planned travel date to obtain the necessary documentation. For information on requirements for entering the United States, please visit: https://travel.state.gov/content/travel/en/us-visas.html
Please note that residents of certain countries will need a non-immigrant B-1 visa to be authorized for a temporary business visit. Residents of countries for which the visa requirement is waived will need to obtain a travel authorization via the Electronic System for Travel Authorization. For more information, please visit: https://www.cbp.gov/travel/international-visitors/esta
Visa application tips
• If you are planning to attend HYDROVISION International®, apply for your visa as soon as possible.
• Attaching evidence of any previous visits to HYDROVISION International® may help shorten the application processing time.
• Attaching evidence of your intended trip home can shorten the application processing.
To receive your invitation letter you must register and pay the registration fee in full for HYDROVISION International®. Letters of invitation can be requested by logging back into the registration system using the information from when you registered. Once logged in, you can request a letter of invitation from your dashboard.