SAWS: Conservation - Power Washing
Aquifer Beaker

Edwards Aquifer

Aquifer Level 682.6'
5/23/19 - Official

The Edwards aquifer and its catchment area in the San Antonio region is about 8,000 square miles and includes all or part of 13 counties in south-central Texas.

Learn More »


Year-Round Watering Hours

Watering with an irrigation system or sprinkler is allowed any day of the week before 11 a.m. or after 7 p.m.

Learn More »


Aquifer Level 682.6 | Year-Round Watering Hours

Log In

Pay Your Bill Online

Already registered? Log in now.

Forgot your password?

New User

My Account Page

No user account? No problem.

Sign Up Now

Commercial Programs & Rebates

Power Washing

Effective January 1, 2006, a person who uses a power washer in any commercial manner or for compensation must register with San Antonio Water System, and obtain a certificate for such use.

Pressure washers conducting business within the jurisdiction of the San Antonio Water System are eligible to join the San Antonio Water System Power Wash Program. The program is a media incentive-based program that rewards local pressure washing businesses for promoting clean water awareness and implementing best management practices such as collecting and discharging wastewater into the sanitary sewer system via a pretreatment system (e.g. to remove solids or oils) for proper treatment or proper disposal via manifesting through a certified wastehauler.

Pressure Washing and Surface Guide

The Pressure Washing and Surface Guide describes the requirements for the proper disposal of wastewater generated by the use of pressure washing equipment generated within the corporate limits of the City of San Antonio. It also provides methods known as Best Management Practices (BMPs), which shall be used to protect the environment and to comply with regulatory requirements.

To download the full, 15-page guide, in Adobe PDF format, click on the link below.

Need the free Adobe® Reader® for PDF files? Click here.