The answer to 'how much is septic tank' is that the cost of a septic tank system can vary widely depending on several factors. Typical ranges for a new septic tank installation can be anywhere from $3,000 to $15,000 or more, with the national average around $6,000-$10,000.
The main factors that influence the cost of a septic tank include the size of the tank, the type of system (conventional vs. alternative), the terrain and soil conditions of the property, the accessibility of the site, and any necessary permitting or inspection fees. Additionally, the cost of labor, materials, and disposal of the old tank (if replacing) can all impact the final price.