Living in Germany/Berlin and can confirm. Our tap water is excellent and is way cleaner than all bottled water you can buy. Keep in mind, bottled water is also kept around way longer and has the time to „breed“. In tests, the tap water is consistently less contaminated. I recommend everyone to just stick to it.
As an anecdote: you can let your tap water be tested for free if you have a newborn to ensure and confirm that you can use it for baby food without doubt.