Can I pay aqualia by dd from uk cc

If you have an online Aqualia account there is a section on there for payments by various means.

I am on my smartphone at the moment so cannot just check my Aqualia online account to see the payment methods.

You can set up a direct debit payment with the company Transferwise.  They also have preloaded debit cards and excellent transfer rates . We have used them for the last 3 years