If you have a life-threatening emergency, please dial 911.
If you have a sewer emergency, such as a water quality issue, a broken water main, or a sewer overflow please call:
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Business hours: (210) 702-2400
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After hours: (726) 203-1489
Report a Problem
If your problem or concern is not urgent or an emergency, please complete our Customer Contact Form.
General Information for New Customers
Mailing Address: P.O. Box 701201, San Antonio, TX 78270
Office Hours: 8:30 am – 4:30 pm Monday through Friday
Customer Notifications
Joint Billing Agreement with Green Valley SUD effective November 1st, 2019. Click here to download notice.
Rate increase in effect January 1st, 2020. Click here to download notice.
Public Utility Commission of Texas ZRU CCN No. 21098 Tariff (please see page 12). Click here to download.
Notice to Homeowners and Plumbers
Requirements for Homeowners and plumbers regarding ZRU’s operations and compliance with the Texas Commission on Environmental Quality.
> Click here to download/view the Notice to Homeowners and Plumbers
Authorization Form to Change Account
Required if legal name change, change of ownership, etc.
> Click here to download/view the Authorization Form to Change Account
Holiday Schedule
Office will be closed on the following Holidays 2020:
| January | New Year’s Day |
| January | Martin Luther King, Jr. Day |
| February | President’s Day |
| April | Good Friday |
| May | Memorial Day |
| July | Independence Day |
| September | Labor Day |
| November | Veterans Day |
| November | Thanksgiving Day (and Day After) |
| December | Christmas Eve and Christmas Day |
| December | New Years Eve |
| January | New Year’s Day |