In August 2020, the University of Minnesota’s Onsite Sewage Treatment Program (OSTP) conducted a brief follow-up study of four commonly purchased recreational vehicle holding tank treatment products to understand how these types of products can impact the wastewater characteristics of an RV dump station. This was done after high levels were found in dump stations at septic systems at two state parks, both owned and managed by the Department of Natural Resources.
It’s assumed that the elevated levels could be due to a decreased amount of graywater usage from laundry and showering, but another source that could be contributing to higher
