Microplastics are, quite literally, everywhere.
Are you on Earth? Congrats, you are eating, breathing, and drinking microplastics.
They've been leeching into the environment for so long that you are no longer just concerned about primary sources contaminating your air, food, and water.
It's homogenized, from the deepest parts of the ocean to the tops of the highest mountains, there are microplastics. It's completely penetrated the food cycle.
If you want to avoid drinking microplastics, you'll have to explicitly remove it from your water.
If you want to avoid eating microplastics... I guess grow your own food in a hermetically sealed bubble and water it with your filtered water.
They've been leeching into the environment for so long that you are no longer just concerned about primary sources contaminating your air, food, and water.
It's homogenized, from the deepest parts of the ocean to the tops of the highest mountains, there are microplastics. It's completely penetrated the food cycle.
If you want to avoid drinking microplastics, you'll have to explicitly remove it from your water.
If you want to avoid eating microplastics... I guess grow your own food in a hermetically sealed bubble and water it with your filtered water.