Ammonoosuc Survey is licensed to design residential septic systems as well as commercial septic system designs. 


Many parts of New Hampshire do not have Munincipal Septic, and therefore homes and businesses need to have thier own individual septic systems.  Prior to building you will likely need to have a NHDES approved septic design. 


If you have suffered a septic system fialure you will need to have a septic design prior to making repairs, see NH env rules passed in 2011.