Winter Quarter Averaging
The City of Corpus Christi uses Winter Quarter Averaging (WQA) to calculate residential wastewater charges. Since wastewater isn't directly metered, we use your winter water usage to estimate your wastewater output.
Residential Winter Quarter Average (WQA) Calculator
Calculate your WQA using the Winter Quarter Average (WQA) Calculator website. The calculator gives detailed instructions on how to use your past bills to estimate the next year's WQA.
Here's what you need to know:
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WQA is based on water usage during winter months (lowest usage period)
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Calculated over three consecutive billing cycles between December 1, 2025 - March 31, 2026
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New rates will appear on your bill starting June 2026
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Charges remain fixed for one year
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Money Saving Tip
Using less water during your winter averaging period can lower your wastewater charges for the entire year!
Get Help
For more information on your utility bill and WQA, please dial 3-1-1.
For More Information
For help paying your bill or changing your service call the Customer Call Center.
About Us
Our mission is to provide the highest quality water and wastewater services that exceeds regulatory requirements and serves the region. We do this by upholding the highest standards, providing innovative solutions, leading strategic initiatives, and prioritizing continuous improvement. Corpus Christi Water also oversees wastewater management services and the Utility Billing Office.
Contact Information
Pay Your Utility Bill
Call 3-1-1
View the 3-1-1 PortalMailing Address
2726 Holly Road
Corpus Christi, TX 78415