Do you know the difference between ignorant and stupid?  Explain why a soap is a 'contaminate'.
Where do the parasites come from?  Do you think the "treatment process' kills viruses?
You could drink it.
Thanks pal

Ignorance is absence of facts...stupid is lacking the intellectual capacity to comprehend the facts.

Contaminates are items that create an adverse reaction to a host. 

• Soaps are a "contaminate" to humans because:
  They will act as a surfactant.  In other words, it moves things through the human host so fast you won't have time to make it to the bathroom (more on these effects in a minute). 
• The more aggressive soaps, like those containing bleach, can chemically damage your body and yes, even kill you.

Soaps are a "contaminate" to the environment because:

• They have nutrient value and if these nutrients make it into a body of surface water (as they inevitably will) they will encourage plant and algae growth (a major problem in our coastal areas).

Soaps, because they generally act as a surfactant, will move parasites and viruses out of the washing machine to the point of discharge and if you are simply discharging to a hole those parasites and viruses have the potential to be spread through direct contact (children playing in it) or indirect contact (dogs rolling in it and transferring it to you when you pet them) or mosquitoes breeding in it (transfer occurring when the females feed on a mammalian host...by the way, mosquitoes have killed more people than all of the wars put together). 

As far as the source of parasites in washwater; babies/children/pets have been known to occasionally to have accidents that soil clothing and blankets with vomit and feces...even adults have had bouts of illness (or excess alcohol) that generate soiled items that require laundering.  But these parasites and viruses can also come from people blowing their noses on their sleeves or even the act of robust flatus can transfer these little items.  And for those people that are stupid enough to consume soap, well, you get the picture. 

However these critters are no match for the hostile environment in a proper soil treatment system.  Why by the time that effluent travels two feet through proper soil they are killed either through electro-chemical processes, mechanical means or they are consumed by bacteria and amoebas that naturally exist in soils.  And guess what happens to that soap...it is converted to inert organic elements.  Bonus round. 

Oh, and there is also the fact that without the dilution factor soaps will damage the soil…but I won’t go into that. 

And that is why you don't want to simply discharge washwater to a hole in the ground. 

So what are you...ignorant or just plain stupid?
 
Jim