By-Law No. 1: Water Supply Protection (S.R. No. 173/1997).

The objectives of this By-law are (a) to control access to certain land, water and works, under the management and control of Melbourne Water for the purposes of protecting the water catchment or water supply system; and (b) to prevent pollution of or damage to certain land, water or works forming part of Melbourne Water's water catchment or water supply system; and (c) to provide for the care, protection and management of land, water and works owned by, vested in, or under the control or management of Melbourne Water for the purpose of discharging its water supply functions under the Act: and (d) to provide for the publication of notices setting out the land, areas and works that are subject to access or activity prohibitions provided for in this By-law. This By-law only applies to land and works, and the water in or on that land and works, that is owned by, vested in, or under the control or management of, Melbourne Water as part of its water supply function. The By-law establishes prohibitions and penalties: a person must not enter any prohibited access areas or prohibited access works; a person must not— (a) touch or allow any part of that person to come into bodily contact with any water in or on any prohibited access areas or prohibited access works; or (b) tamper or interfere with or damage any land, water or works within or on any prohibited access area or prohibited access works; a person must not— (a) bring, or cause to be brought, any animal; or (b) leave any animal; or (c) allow any animal to stay or wander— on or in any prohibited access area or prohibited access work
Under the By-law prohibited access area means (a) a dam or weir or a reservoir or other water storage; and (b) an aqueduct, channel or other open conduit; and (c) land that is the catchment area for a weir or a reservoir or other water storage; and (d) land that is a buffer zone set aside to protect a catchment area or works referred to in paragraph (a) or (b) that is enclosed by fencing or has signs prohibiting public access to those works or the land; and prohibited access works means service reservoirs, treatment plants, pumping stations, and other works associated with the water supply system and includes the land surrounding those works, that is enclosed by security fencing or has signs prohibiting public access to the works or land.