I talked to the land owner whose fields regularly get septic dumpings and asked about it. He said that they come in and do soil test to make sure its the right type of soil with the right drainage. They can then use his fields to empty their tanks.
Just thought Id double check so I'm not lying to ya.
I know that farmers can and do spread their fields but if they have to many head they have to truck some of it out.
I hunt a property here in OH that borders a landowner whose business is pumping septic tanks and renting port a potties, they empty there trucks in thier fields everyday. We actually watched them empty directly into a creek several years ago. We called the health department and we're told it is perfectly legal. They don't dump in the creek anymore (maybe the laws have changed) but they still dump in the fields that drain directly into the creek.