I see and hear of no cases of Corvid spread via water supply. On the other hand if you spend money and time gathering in a resource that is easily and continua

I see and hear of no cases of Corvid spread via water supply. On the other hand if you spend money and time gathering in a resource that is easily and continually available then you are not taking the action that really will help you. Gathering supplies of water is sensible in case of natural disaster and war - for this one, not so much. Spend the money on food and entertainment instead.