[smsm42]

Well, consider this for example: http://en.wikipedia.org/wiki/Human_rights#Water

Specifically: This marks a departure from the conclusions of the 2nd World Water Forum in The Hague in 2000, which stated that water was a commodity to be bought and sold, not a right.[102] There are calls from many NGOs and politicians to enshrine access to water as a binding human right, and not as a commodity.

It seems to imply pretty clearly that access to water as a human right contradicts requirement for payment. The same argument is frequently heard when the healthcare is discussed. So I would say implying that it means not only ability to access but actually ability to access for all, regardless of means - is not out of the question. At least it does not contradict how many other "rights" are interpreted.