Septic companies in Allen, TX
Two septic companies on record in Allen, Collin County. About 100% of mapped ground here is rated Very limited for septic drain fields, with slow water movement the limiting feature.
Septic Permits in Collin County
Collin County Engineering Department - Development Services opens in a new tab
What the ground in Allen is like
The USDA soil survey rates mapped ground in Allen for septic drain-field suitability across roughly 26 square miles. About 100% 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 Allen, 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 95% 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 · 100% Very limited · Slow water movement · 20 map units · 26.38 sq mi · read 2026-08-30
The two companies
- 35Royal Flush Septic, Inc.Not on the state roster(972) 948-4500
- 25Nortex Septic SystemsNot on the state roster(972) 948-4500