How Often To Empty Rv Septic Tank. The size of your family, tank size, whether or not you have a garbage disposal, and climate are a few factors that will influence the service interval. Septic systems do have to be regularly emptied, to remove solid waste that does not drain out into the drain field.
In this case i would definitely empty the tank every 3 years. The difference between sewer and septic being that sewers are a large waste management. After you have the septic company remove the black water from your tank, fill it with water again and have the company drain it once more.
If you must dump before you hit the ⅔ full mark, it is recommended to add enough water to bring it up to the desired level.
Not filling your washing machine a couple of times a day, leaving your taps running or over. Regular pumping and maintenance are vital for a healthy home septic system. You should dump your rv black tank when it is at least 2/3 full or more. After you have the septic company remove the black water from your tank, fill it with water again and have the company drain it once more.