First they came for our plastic grocery bags. Then they came for our plastic straws. Now they’ve come for our plastic water bottles at SFO. Yes, you read that right. Starting Tuesday, the sale of plastic water bottles will be banned at San Francisco International Airport, one of the few places they actually make sense. California has many dumb laws and statutes and bans, but this one is especially brainless—spurred by futile self-righteousness.

After running late for your flight after a 30-minute security line only to have...