2. Nalco Holding ( NLC) provides integrated water treatment and process improvement services. Analysts polled by Bloomberg foresee the company reporting earnings of 31 cents per share in 2011 first quarter as against earnings per share of 18 cents and 40 cents in the year-ago and quarter-ago periods, respectively. Earnings per share are pegged at $1.70 for 2011 and $2.04 for 2012, up from $1.41 per share reported for 2010. The stock's return-on-equity was 33.6% during the past 12 months, whereas Danaher ( DHR), Ecolab ( ECL), Ashland ( ASH) and Arch Chemicals ( ARJ) had ROEs of 14.1%, 25.7%, 9.0% and 16.7%, respectively. Data from Bloomberg has analysts predicting an average 12-month target price of $51.5, up 92% from the current level. Of the 19 analysts covering the stock, 8 recommend buying, while 7 suggest holding and 4 rate selling.