You point to the membrane as a leakage source, but most RO systems also use flexible hosing in the assembly and from past work in medical devices it seems that

You point to the membrane as a leakage source, but most RO systems also use flexible hosing in the assembly and from past work in medical devices it seems that flexible hosing is also a huge source of phthalate leakage. Is that something that is also taken into account in higher end RO systems?