Here’s where I get real with you: the filter you need depends entirely on what’s in your local water. If you’re on city water that smells like a pool, a simple carbon pitcher will do the trick. But if you’re on well water (hello, iron and sediment), you might need a whole-house sediment filter plus a RO system under the sink. Check your city’s annual water quality report—it’s public info, and it tells you exactly what’s in your glass. Yes, you can look that up while sipping your morning coffee. I dare you.
One Big Headache: Microplastics
We haven’t even talked about the fact that your plastic water bottle is slowly shedding tiny plastic bits into your drink. Most standard filters don’t catch these little bastards. Only specialized carbon blocks or RO membranes with a pore size of 1 micron or smaller will stop them. So if you’re buying a filter labeled “reduces microplastics,” check the fine print—it’s a marketing jungle out there.