Yeah, typical pole. My previous neighbours washed once every 7 days even. I hate polish culture lol. White people sometimes think brown people are dirty, etc, but honestly with water that cheap it's easy to stay clean or just indulge if you want to chill (I know it might not be as cheap from locals' perspective as it is from mine with earnings in currency stronger than theirs). Built in mini-shower for your ass (my friend calls this 'bum gun' xD) next to the toilet is common so you wash your privates after using the toilet, it also really helps in public toilets because even if toilet is gross I still have water source so can wash my ass + feet if I stepped into something (although in practice there's no urine on the floor in gross public toilets like in Poland, it's water from the 'bum gun'). Bonus free wet tissues added to sanitary pads and sometimes napkins I buy from supermarket are common, so 1 time when I was in some really middle of nowhere I still could clean up at least with these tissues, also for some reason their formula is very effective unlike wet tissues I stopped buying in Poland because they were leaving sticky residue, these tissues make everything so shiny I started using them on my phone screen lol. The real problem I'm having, that for my allergic sensitive eczema-prone skin sri lankan soaps are just too much. So harsh. I started using gram & rice flour mix instead. It's like they're trying to counteract all the dirt and sweating from life in the tropics so their soaps and shower gels (even for kids, I've tried) are crazy harsh + they include triclosan in many products, crazy ugh. To be fair, there exist these dirty places in middle of nowhere and some people that don't wash daily but with all that water and strong cleansing products available it's not hard to stay clean.
Good luck in Germany, popular destination, my sister has some friends that emigrated there (as probably most poles have - Germany and UK most popular).