Septic soil in Cass County, TX, by the numbers
Very limited
In Cass County, TX, 83% of the surveyed land carries a "Very limited" rating for a standard septic drain field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 83% of Cass County's land. Cass County, TX is 936.947 square miles with a population of 28,622.
What Cass County's reading doesn't cover
Cass County's rating is an average across the whole county, not a promise about any one lot inside it. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Cass County will actually do.
What a system would cost here
With 83% of Cass County rating "Very limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.
Cass County's rank among Texas counties
Nationally, Cass County, TX is the 1,856-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 135 of 253.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems