Amazon has the Filtrete Maximum Under Sink Water Filtration Filter (3US-MAX-F01) for $25 - 5% off with Subscribe & Save (can cancel anytime) = $23 with free shipping on $25+ or with Prime.

Reduces 99% lead, 99% microbial cysts, 97% chlorine taste & odor, 0.5 microns of sand, sediment, rust and soil. Good Amazon reviews.