This is normal, and all cars actually do it.
In 99% of cases, water from your car exhaust system is absolutely normal and is nothing to worry about. It is just condensation being vented while the engine is running. You’re most likely to notice this when the outside temperature is cold and when the engine has not been running all that long.
Could be, but also maybe isn't. AFAIK there is just single test, and that is just not enough data to make a conclusion.