Section 27 of Constitution - sufficient water is the quantity of water required for dignified human existence - the Water Services Act 108 of 1997 does not deprive anyone of the right of access to sufficient water in terms of s 27(1) - a person who cannot afford to pay for water has no access to water being charged for - local authority obliged to supply free water to residents who cannot afford to pay for the water if reasonable to expect it to do so - prepayment water meters used by appellants not authorised by bylaws and unlawful.