Vegetable water is totally harmless and can often be used as a base for a broth. If meat is an option, fortify it with chicken broth..or better yet, use it to make your own beef/chicken broth. If desired, you can also fortify it with more savory tasting vegetables. Celery and carrots usually impart a nice flavor. Just make sure u strain the solids.
If you are health conscious,You can also use the veggie water as a substitute for water in your morning smoothies. If there is, especially if there's color and flavor in the veggie water, then there are definitely additional nutrients you can use for nourishmentit.
Cheers,
Cy