The recent "head or no head" discussion led me to think about our use of traditional marine toilet and holding tank. The link that was posted described MSD Type I & II treatment requirements as fairly simple ... reduce bacteria count to less than 1,000 CFU/100ml and eliminate all particulate matter. Essentially the discharge must be clear liquid. When I have observed the contents of our holding tank via a clean-out port that I installed, the contents are as clear as a glass of pure water (just with a stronger odor).
So, if a boater uses the marine toilet solely for urinating, would the discharge be considered a pollutant? My understanding of normal urine is that it basically contains no bacteria (although it is present under certain circumstances). It certainly is a clear liquid with no particulate matter.
So, why would it not be legal to hold diluted urine in the holding tank and discharge in areas where you can't normally discharge sewage? In other words, is urine diluted in freshwater or seawater actually sewage?
So, if a boater uses the marine toilet solely for urinating, would the discharge be considered a pollutant? My understanding of normal urine is that it basically contains no bacteria (although it is present under certain circumstances). It certainly is a clear liquid with no particulate matter.
So, why would it not be legal to hold diluted urine in the holding tank and discharge in areas where you can't normally discharge sewage? In other words, is urine diluted in freshwater or seawater actually sewage?