Section 24.05.01.002 - DEFINITIONS01.Very Small Public Drinking Water System. A community or non-transient non-community public water system that serves five hundred (500) persons or less and has no treatment other than disinfection or has only treatment which does not require any chemical treatment, process adjustment, backwashing or media regeneration by an operator (e.g. calcium carbonate filters, granular activated carbon filters, cartridge filters, ion exchangers).02.Very Small Wastewater System. A public wastewater system that serves five hundred (500) connections or less and includes a collection system with a system size of six (6) points or less on the Idaho Department of Environmental Quality (DEQ) system classification rating form and is limited to only one (1) of the following wastewater treatment processes: aerated lagoons; non-aerated lagoon(s); primary treatment; or primary treatment discharging to a large soil absorption system (LSAS).Idaho Admin. Code r. 24.05.01.002