Huntly Borough v Williams - [1974] 1 NZLR 689

Water and water control — Pollution — Temporary permit to discharge sewage with expiry date endorsed thereon — Regulation providing "Every permit . . . shall remain in force until its is revoked" did not prevent permit expiring according to its terms — Waters Pollution Regulations 1963 (SR 1963/30), regs 12(3), 16(1)