Pay a water bill
A public service of Undevia. No account and no sign-in. The reference printed on your bill, how much you are paying and how you are paying it is everything that is asked for.
You do not need an account, a name or an identity document to pay. No name and no email address is kept: the reference this door gives you is what you hold, and it is what brings the payment back.
Already have a payment reference? Type it in below and you are told whether the money has landed.
Or open /public/pay/ with your reference on the end.