Municipal or domestic wastewater is the sewage generated from residences, institutions, commercial or industrial establishments. The wastewater flows in sewer collection lines to a sewage treatment plant, where it is treated prior to discharge. The discharge of the treated wastewater requires an Aquifer Protection Permit (APP), and may also be regulated under an Arizona Pollutant Discharge Elimination System (AZPDES) and/or a Reclaimed Water Permit Program.