Septic companies in Marble Falls, TX

What the ground in Marble Falls is like

The USDA soil survey rates mapped ground in Marble Falls for septic drain-field suitability across roughly 17 square miles. About 99% of the rated ground is classed "Very limited", the survey records severe restrictions for a conventional drain field across most of that ground.

In Marble Falls, the leading limit is depth to bedrock: rock sits close enough to the surface that there is not enough soil column above it for a conventional field to sit in. Effluent needs that depth to disperse; when bedrock comes up, the workable layer runs out. The survey flags that limit on about 86% of the rated ground here.

The limiting features the survey records most often here:

• Depth to bedrock85.7%
• Large stones44.9%
• Slow water movement35.2%
• Slope13.7%

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 · 98.7% Very limited · Depth to bedrock · 26 map units · 16.53 sq mi · read 2026-08-30