Section 12 of the Andhra Pradesh Water, Land and Trees Act, 2002 (for short “the Act”) authorises the protection of public drinking water sources. Sub-section (1) provides notwithstanding anything contained in any law for the time being in force, the Authority may, on the advice of the Technical Officer, that may existing well is found to be adversely affecting any public drinking water source, after giving the owner a reasonable opportunity of being heard by an order, prohibit the extraction of water for commercial, industrial, irrigation or any other purposes from such well for a period of not more than six months which after review may be extended for a further period of not more than six months at a time. The proviso to sub-section (1) provides that irrigation well with standing crop shall be taken as last priority for such purpose. Sub-section (2) provides giving reasonable opportunity of being heard, by an order requesting him to stop the extraction of water and close or seal off such well forthwith either temporarily or permanently. Sub-section (3) contemplates the procedure for making an enquiry by the authority constituted under section 3 of the Act.