The City of Corpus Christi uses winter quarter averaging (WQA) to determine wastewater charges for residential customers. The WQA is calculated based on the residential water usage during three consecutive billing cycles beginning this December. Once an average is calculated, wastewater charges will be the same every month for a year until a new average is calculated. This change will prevent fluctuating wastewater charges. Billing for winter quarter averaging will appear on residential utility bills by June 2022.