Septic companies in San Marcos, TX
3 septic companies on record in San Marcos, Guadalupe County. About 96% of mapped ground here is rated Very limited for septic drain fields, with slow water movement the limiting feature.
Septic Permits in Guadalupe County
Guadalupe County Environmental Health Department opens in a new tab
What the ground in San Marcos is like
The USDA soil survey rates mapped ground in San Marcos for septic drain-field suitability across roughly 40 square miles. About 96% of the rated ground is classed "Very limited", meaning the soil has one or more features unfavorable for a conventional drain field, and the limits generally cannot be overcome without major soil reclamation, special design or expensive installation.
In San Marcos, the leading limit is slow water movement: effluent does not drain through the soil fast enough, so a conventional field can back up or pond when the ground cannot keep pace. The survey flags that limit on about 76% of the rated ground here.
The limiting features the survey records most often here:
This is survey data for mapped areas, not a substitute for a site evaluation on your own lot. Conditions on a single parcel can differ from the map.
USDA NRCS SSURGO, ENG Septic Tank Absorption Fields · 96.1% Very limited · Slow water movement · 68 map units · 40.43 sq mi · read 2026-08-30
Companies in San Marcos
- 25Mr. Rooter Plumbing of San MarcosNot on the state roster(512) 846-3992
- 25L & L Septic & Grease Trap CleaningNot on the state roster(512) 353-3780
- 15Bumblebee Home Inspection and Septic ServiceNot on the state roster(512) 774-5094