Source: Ministry of Public Health Announcement No. 61 (1981) concerning drinking water in sealed containers, published in the Royal Gazette, Volume 98, Section 157 (Special Issue), dated September 24, 1981, which was amended by Ministry of Public Health Announcement No. 135 (1991) concerning drinking water in sealed containers (No. 2), dated February 26, 1991, published in the Royal Gazette, Volume 108, Section 61, dated April 2, 1991.