[Setec Astronomy]

Wow, I've never heard of a house with separate drain plumbing for the sinks and showers from the toilets. What do you call that...you have sanitary lines for the toilet, and gray water lines for the sinks and showers? Sounds to me like all that extra plumbing and keeping it all straight would be more expensive than just having a properly sized septic system, but then again, you do live in one of those affluent areas where people would pay more to run their gray water somewhere other than the septic system.