Atascosa Rural Water Supply Corporation, a public, not-for-profit corporation, provides water to about 11,007 residents living in Atascosa, an urban area in the western part of Bexar County, Texas. Founded in 1968, the Atascosa Rural Water Supply Corporation System currently obtains its supply from groundwater sources, primarily wells that drill into the Edwards aquifer underneath Bexar County.
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Atascosa Drinking Water Quality

Consumer Confidence Water Quality Reports

Under the authority of the Safe Drinking Water Act, the EPA requires Atascosa Water to assess local water quality each year and distribute a Consumer Confidence Water Quality Report. At WaterZen, we review these reports and make the information available, in a concise, straightforward, and easy-to-understand way. You can find CCR report on the Atascosa Water website.

Contact Atascosa Water Customer Service

Have a Question, Issue or Comment?

Main Customer Service

Physical Address:
Po Box 9
Atascosa County, Texas 78002-0009


Emergency (24 hours - broken water main or pipeline, etc.)

Pay Your Atascosa Water Bill

Already have an account?

If you already have an account, you just need to login to the Atascosa Water site. Atascosa Water accepts credit cards, debit, and direct deposit. Click here to login.

How to Start Atascosa County Water Service

Starting Your Service

When you move to a new home in Atascosa, you'll most likely already have running water, but you'll still need to set up water service with the Atascosa Water. Luckily, Atascosa County has made it pretty simple with the following online form. Starting service generally takes just two business days.

Click here to fill out a Start Service Form.

Stopping Your Service

When you move out of a home in Atascosa, you'll need to stop your water service with the Atascosa Water, so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.

Click here to fill out a Stop Service Form.