1 year ago we tore down my parent's home. The plan was to put up a modular and use the existing septic system that has worked since the 60's. My local township gave us 1 year to get it done without needing to change the septic system. Due to the Corona virus, the modular home companies are way behind production, which in turn means our house will be late getting to the land we have. Since we will be past our 1 year grace period, out township may require a perc test. If we fail that, what is a good option for septic systems that won't cost an arm and a leg, or is there no such thing? As our luck has been running lately, I can see a failed perc in our future. So I am trying to educate myself on options.