Local Reference
San Antonio Outdoor Care & Water Facts
A citable local fact sheet on rainfall, irrigation, and the rules that shape outdoor surface cleaning in San Antonio.
Last updated August 25, 2026
At a Glance
Local conditions shape how outdoor surfaces are cared for.
Rainfall, irrigation rules, and water-use expectations all affect the driveways, sidewalks, and patios around San Antonio homes. This page collects the official facts that are most useful when discussing outdoor surface care in the area.
Each fact links directly to its original source and has a stable page anchor for easy reference. For advice about a specific surface or estimate, talk with Bexar about the property.
San Antonio Facts
Eight local water and surface-care facts.
Official figures and rules current as of August 25, 2026.
San Antonio's highest daily rainfall
The city's highest single-day rainfall total is 11.26 inches, recorded on October 17, 1998.
Source: National Weather Service, San Antonio Area Highest Daily Rainfall, updated August 2025.
Link to this factA recent top-10 rain day
June 12, 2025 ranks as San Antonio's 10th-highest daily rainfall total in records that begin in July 1885.
Source: National Weather Service, San Antonio Area Highest Daily Rainfall, updated August 2025.
Link to this factTypical irrigation use per run
The San Antonio Water System says an average irrigation system uses 2,000 gallons each time it runs.
Source: San Antonio Water System, Stage 2 Watering Rules, updated March 20, 2026.
Link to this factWeekly irrigation limit in Stage 2
During Stage 2, irrigation systems, sprinklers, and soaker hoses may be used only once a week on the address's assigned watering day.
Source: San Antonio Water System, Stage 2 Watering Rules, updated March 20, 2026.
Link to this factMorning Stage 2 watering window
The allowed morning watering window during Stage 2 is 5 a.m. to 10 a.m. A separate evening window runs from 9 p.m. to midnight.
Source: San Antonio Water System, Stage 2 Watering Rules, updated March 20, 2026.
Link to this factRegistration for paid power washing
Anyone using a power washer commercially or for compensation in the San Antonio Water System jurisdiction must register with the utility and obtain a certificate.
Source: San Antonio Water System, Power Washing, modified June 18, 2025.
Link to this factHow professional wash water is handled
The local power-wash program calls for wastewater to be collected and sent for proper treatment or disposal rather than left to run off untreated.
Source: San Antonio Water System, Power Washing, modified June 18, 2025.
Link to this factRoutine driveway washing in Stage 2
During Stage 2, washing driveways, sidewalks, streets, and other impervious cover is prohibited except for approved health and safety exceptions.
Source: San Antonio Water System, Stage 2 Watering Rules, updated March 20, 2026.
Link to this factUsing These Facts
Facts are useful when the source stays close to the claim.
Weather records explain why a clean surface can change quickly after a heavy storm. Water rules explain why the timing and handling of outdoor work matter. These facts are intended as local context, not a substitute for the current official rules or a site-specific assessment.
San Antonio water restrictions can change. Check the linked water-system guidance before planning irrigation or surface washing during drought conditions.
Methodology & Sources
Official records, cited directly.
This fact sheet uses primary local weather and water-system sources. It was last reviewed August 25, 2026.
- National Weather Service, Austin/San Antonio: San Antonio Area Highest Daily Rainfall, updated August 2025. Rainfall rankings are reported for the period of record beginning July 1885.
- San Antonio Water System: Stage 2 Watering Rules, updated March 20, 2026. Used for irrigation-use and drought-rule facts.
- San Antonio Water System: Power Washing, modified June 18, 2025. Used for professional registration and wash-water management facts.
Cite This PageBexar Pressure Washing. San Antonio Outdoor Care & Water Facts. Updated August 25, 2026. https://bexaroutdoor.com/san-antonio-outdoor-care-statistics