There are but any problems you might have would be from surface application. Coming out of a septic tank into a leeching feild would have the fecal matter already breaking down.
Would I do it on purpose? NO. Do I think it would hurt anything? No.
Not out here. The last time the county showed up I threatened to kick his fucking ass and ripped his notepad out of his hand and tore it in half. No more problems. Gee.......that homemade beer will get you in more trouble....