regular deuterium abundance is 1 part per 6000, on venus its 1 in 60, or 1.6-2 % at 0.5% it fucks bacterial growth ( say goodbye to your microbiome) at 25% even short term deuteriation ( percentage of your bodies water that is deuterium ) causes irreversible sterilization, although 1.6-2% is 10% that level, this isn't short term exposure of a few days here, all water on venus will need to come from venus shipping water is impossible realistically, people will experience this 10% consistently for months or years, there is a VERY high chance of sterilization over this time period.
>hur dur we'll just do reverse isotope enrichment and collect the waste product (deuterium depleted water)
ahh yesss thatll be 500$ per fucking glass thanks.