Re: What to do?
Summer's coming. Instead of piping your shower out in the yard and drawing the ire of People Who Walk Stiffly, just build an outdoor shower.
Many municipalities are beginning to allow the use of greywater (which is anything that doesn't include human waste, such as what comes from a toilet) for irrigation. If this is the case where you live, piping the shower water into the yard shouldn't be a problem. Under the tub, there will be a trap, which is a U-shaped section of pipe. Just cut into the line anywhere downstream of this trap.
So why don't you get a sewer backup when you flush the toilet? If you don't get it then, then it's not a septic problem; you've got a blockage.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.