aart: Google "aerobic treatment system" Pretty much all new homes who don't have city sewage are required to have this system in Dallas/ South Dallas (TX) counties because of our "black clay" soil.
Thank you for your thoughts. I keep chlorine tablets in the pipe like I was instructed. My girls don't show any sign of being sick, but I am concerned that the eggs will make us sick. It seems like animals always have a stronger stomach than humans.
My chickens are fenced in the backyard. My problem is I have an arobic septic system and the sprinklers come on to drain the tanks. The yard is big enough for them to get away from the sprinkler when it turns on, but will they avoid the septic water or will they think it is just raining and go...