Housing in San Marcos and where water damage starts
San Marcos has about 30,349 homes, and half of them were built in 2001 or earlier. The city added roughly 6,534 residents between 2020 and 2024 (9.6%), so a large share of homes are recent builds. Most of the city is newer construction, with 52% of homes built in 2000 or later. Newer homes rely heavily on drywall, engineered flooring, plastic supply lines and appliance connections, so water from a failed hose, water heater or fixture can wick into walls and under cabinets quickly.
San Marcos climate and water risk
The nearest NOAA normals station, San Marcos, records 36.5 inches of precipitation in a normal year. That is a moderate total, but in this region it tends to arrive in concentrated storms rather than steady drizzle. The station averages 11.4 days a year with an inch or more of rain, the kind of day when gutters overflow and water finds its way through thresholds and window wells. Freezes are less frequent, about 20 nights a year at or below 32°F, but homes built for warm weather often have pipes in attics and exterior walls that are exposed when a hard freeze arrives.
Disaster history in Hays County
FEMA records 10 major disaster declarations covering Hays County since 2000. 6 of the county's declarations on record were classified as floods. 1 was a hurricane or tropical storm, a reminder that wind-driven rain and storm surge are part of the local risk picture. The most recent water-related declaration was DR-4781 (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding), declared in May 2024. Before that: DR-4705, severe winter storm (April 2023); DR-4586, severe winter storms (February 2021). Declarations mark the largest events; most household water damage comes from smaller storms and everyday plumbing failures that never reach that level.
Creeks, rivers and drainage around San Marcos
USGS maintains surface-water monitoring sites within about five miles of central San Marcos on San Marcos River, Purgatory Creek, Sink Creek and Blanco River. Homes near these channels and their floodplains can see water rise quickly during heavy rain. FEMA flood maps for any address can be checked at the FEMA Flood Map Service Center before and after a storm.
Renters, landlords and property managers
About 69% of occupied homes in San Marcos are rented. Property owners and authorized property managers can call to be connected with an independent contractor for a rental unit. Tenants should report water to the landlord or manager right away.
What the local data points to in San Marcos
- Flood Cleanup: 6 flood declarations in Hays County and nearby channels such as San Marcos River, with about 11 one-inch rain days a year.
- Water Damage Restoration: Only 35% of homes are single-family detached; in attached and multi-unit buildings a leak can travel to neighboring units.
- Water Removal & Extraction: 1 hurricane or tropical storm declarations in Hays County bring wind-driven rain that leaves standing water indoors.
All services through the San Marcos referral line
- Water Damage Restoration
- Water Removal & Extraction
- Water Damage Cleanup & Drying
- Flood Cleanup
- Burst & Frozen Pipe Water Cleanup
- Basement Flooding Cleanup
- Crawl Space Water Cleanup
- Carpet Water Extraction & Drying
- Wood Floor Water Damage Drying
- Appliance Leak Water Cleanup
- Sewage Cleanup (Biohazard)
- Mold Removal & Remediation
- Fire & Smoke Damage Restoration
Not covered: drywall repair and rebuilding, mold testing, plumbing leak detection and insurance-only questions.
How the call works
Call (844) 477-0896 and describe the source of the water and the rooms affected. The call is connected to an independent contractor serving San Marcos, subject to availability. The contractor sets scope, schedule and price directly with you. Before work begins, ask the contractor for proof of the license and insurance required in Texas.
San Marcos questions
How do I get connected with a water damage contractor in San Marcos?
Call (844) 477-0896. Water Damage Restore connects callers in San Marcos, TX with an independent restoration contractor, subject to availability. Water Damage Restore does not perform the work.
What should I do while waiting in San Marcos?
Shut off the water at the main valve if a pipe or appliance is leaking, keep clear of wet electrical outlets, move valuables off wet floors and take photos of the damage. The independent contractor confirms scope and next steps.
Do pipes freeze in San Marcos?
NOAA climate normals show about 20 nights a year at or below 32°F near San Marcos. Pipes in exterior walls, attics, crawl spaces and garages are the most exposed during a hard freeze.
Is San Marcos in a flood zone?
Flood zones are mapped address by address. Look up a specific property on the FEMA Flood Map Service Center (msc.fema.gov). Hays County has 6 flood disaster declarations on FEMA record.
Can a landlord call about a rental in San Marcos?
Yes. Property owners and authorized property managers can call to be connected with an independent contractor.