Which term refers to water that is drinkable without being treated for bacteria, mineral deposits, and poisonous contaminants?

The answer is portable water, this is a the type of water that is being drink by an individual without having it to be tested or even being treated with things like contaminants, mineral deposits and even bacteria.  They are considered to be safe when in terms of drinking and even for food preparations.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.