In September of each year, the City submits a National Pollutant Discharge Elimination System, or NPDES, Storm Water Annual Report to the San Diego Regional Water Quality Control Board for review. This report is a thorough analysis of the City's stormwater management program's effectiveness in improving water quality. Specific areas of program implementation address development and construction activity; municipal operations; commercial business inspections; and residential outreach. All cities within San Diego County are required to submit an NPDES report annually. Additionally, the County's Environmental Health Department performs weekly water quality sampling in the City. Should samples exceed safe water quality levels, the City is notified and an appropriate level of public notification and protection is made.