Section 15(1)(b) in The Goa Ground Water Regulation Act, 2002
(b)if the user cannot be found, by affixing the order or notice on some conspicuous part of his last known abode or place of business or by giving or tendering the order or notice to some adult male member of his family or servant or by causing it to be affixed on some conspicuous part of the land or building in which the well is being sunk.