Thank you for your interest in using an account on WatSan.eu! Please be aware that for posting and answering to questions you do not need to register.
The fastest way to log into this page is to use one of the external providers such as HumanitarianID. The link redirects you to the provider and requests your permission to share a name and email address with this website. If you then later click on the same link again it will automatically log you in through this provider.
Please note that the provider does not share your password with WatSan.eu for security reasons. However, for using parts of WatSan.eu other than the main Q&A we do require to know a password hash set by you.
It should be possible to simply set your own new password in the user preferences of a WatSan.eu account previously created with an external provider.
Alternatively you can manually link an external provider such as HumanitarianID to a new regular account on WatSan.eu by navigating to your user preferences and clicking the respective link for the external provider there.