Locate the system downhill and at least 100 feet from any drinking water source. If an existing system is closer than 100 feet to a well, it does not mean the water source is being contaminated. However, it is important that the system be properly maintained to avoid contamination problems. Knowing the location of an existing septic tank system is important. A drawing that shows the system in relation to your house and barn is recommended.
Tree roots can enter septic system lines and cause plugging.
Lines should not be placed near trees, and trees should not be planted near lines. The most common maintenance is to have the septic tank pumped out routinely. This is done to keep the sludge and scum from building up to the point they flow into the absorption field and plug up the pipe and gravel bed. Most systems should be pumped out every 4 to 6 years. This time can be shorter if there is a lot of wastewater produced in the household, and especially if a garbage disposal is used.