This unprofessional release mentions "literal" tap water being used. It appears that this is "literally" not true - is this a lie, or are you just upset with the parent comment's conclusion?
Both sides can be wrong and lying. Does it matter if water is "tap water" or if it meets the regulations for tap water? Lying to call someone out for lying just undermines the point.
Edit: Sigh, on re-reading the SpaceX statement they say the input water is "potable" and then later say, "Again, it uses literal drinking water", they never say "tap water". While an exaggeration, that is the definition of potable. They are not saying the output water is drinking water! Only that "all levels have remained below standards for all state permits that would authorize discharge."
But again, I'm not claiming they aren't lying or stretching the truth, just that we should be contesting them on the facts.
