Septic companies in Marana, AZ

What the ground in Marana is like

The USDA soil survey rates mapped ground in Marana for septic drain-field suitability across roughly 122 square miles. About 41% of the rated ground is classed "Very limited", the survey records severe restrictions for a conventional drain field across most of that ground.

In Marana, the leading limit is flooding: parts of the mapped ground sit in areas that inundate from time to time. A drain field under water cannot treat or disperse effluent, and floodwater can lift untreated waste into the open. The survey flags that limit on about 48% of the rated ground here.

The limiting features the survey records most often here:

• Flooding47.8%
• Slow water movement38.6%
• Slope14.8%
• Depth to bedrock11.3%

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 · 41.3% Very limited · Flooding · 96 map units · 121.73 sq mi · read 2026-08-30