As far as septic tank companies go, it's near impossible to tell a good one from a bad one. That is, until you use both. Northlake Septic is an independent septic pumping company, and they seem to be honest about things, as far as I can tell. After talking to a few of them, I realized that there were a couple out there that were trying to pull a real rip off on me by giving a really low bid on the phone and then coming out and telling me that I had more gallonage than they thought. Well, Northlake told me like it was on the phone and gave a good honest quote up front.