I would recommend amway e-spring.

Why eSpring?

No other water treatment system compares to the eSpring Water Treatment System.

The eSpring Water Treatment System is truly the first of its kind in many respects. It is:

* the first in-home system to combine a patented carbon-block filter with ultraviolet light and an electronic monitoring system.
* the only system certified to effectively remove lead and more than 140 potential health-effect contaminants, including trihalomethanes (THMs), which can be a by-product of municipal water treatment systems that use chlorine.
* certified by NSF International for the reduction of more contaminants than any other UV carbon based system.
* the first system in the world to meet three internationally recognized water quality standards, NSF International Standards 42, 53 and 55.
* the first system to use wireless inductive coupling technology to increase safety and reliability.