- Caldwell and Bastrop counties require a permit to install septic systems.
- The Bastrop county health department is: (512) 581-7176 . https://www.co.bastrop.tx.us/page/ds.environmental
- The Caldewell county health department: (512) 398-1803. is: http://www.co.caldwell.tx.us/page/caldwell.Sanitation