Why am I recommending a water treatment stock you may ask??? Warren Buffett is buying this week's pick, and if that's not good enough for you, the stimulus bill that just passed has money for water treatment upgrades. Double whammy is the technical term the pro's use I believe. Nalco Holding Company (NLC) provides water treatment and process improvement products and services to industrial and institutional customers worldwide. Its products and services are used in water treatment applications to prevent corrosion, contamination, and the buildup of harmful deposits. Buy Stock Under $11.00