Septic Installation Pros are the leading septic system service companies in Orange County, NY and Ulster County NY. We install septic tanks, repair existing septic systems. We also install and repair leach fields. We locate where your new septic tank is going by running extensive diagnostics, such as smoke or dye testing, and conducting soil testing to determine the size of the absorption field. Special systems installed include lift pumps (raised fields), fill pads, and distribution boxes.