I’m starting to look into installing a septic system myself and trying to understand all the factors that go into it. Soil conditions seem to be a big one, and I’ve read that a perc test is usually the first step, but I’m not sure how that works or who performs it. I’ve also been told that the size of the property and the number of bedrooms in the house affect the system design, which makes sense but I’m not sure how to calculate the right size. Local regulations are another thing I’m worried about, since I’ve heard they can vary a lot depending on the area. When it comes to hiring a contractor, I’m not sure if I should look for someone who specializes in septic systems or if a general excavator would do.