Top 10 Most Efficient Environmental Stocks: WM, SRCL, WCN, CVA, RSG, MPR, DCI, TTEK, WSII, EEI (May 05, 2010)

Below are the top 10 most efficient Environmental stocks, based on earnings per employee for the last 12 months.

Waste Management, Inc. (NYSE:WM) is the 1st most efficient company in this segment of the market. Its earnings per employee was $24,931 for the last 12 months. Its revenue per employee was $274,562 for the same period. Stericycle, Inc. (NASDAQ:SRCL) is the 2nd most efficient company in this segment of the market. Its earnings per employee was $23,695 for the last 12 months. Its revenue per employee was $158,846 for the same period. Waste Connections, Inc. (NYSE:WCN) is the 3rd most efficient company in this segment of the market. Its earnings per employee was $21,500 for the last 12 months. Its revenue per employee was $228,513 for the same period. Covanta Holding Corporation (NYSE:CVA) is the 4th most efficient company in this segment of the market. Its earnings per employee was $20,505 for the last 12 months. Its revenue per employee was $392,318 for the same period. Republic Services, Inc. (NYSE:RSG) is the 5th most efficient company in this segment of the market. Its earnings per employee was $14,465 for the last 12 months. Its revenue per employee was $261,171 for the same period.

Met-Pro Corporation (NYSE:MPR) is the 6th most efficient company in this segment of the market. Its earnings per employee was $13,450 for the last 12 months. Its revenue per employee was $242,827 for the same period. Donaldson Company, Inc. (NYSE:DCI) is the 7th most efficient company in this segment of the market. Its earnings per employee was $10,914 for the last 12 months. Its revenue per employee was $160,280 for the same period. Tetra Tech, Inc. (NASDAQ:TTEK) is the 8th most efficient company in this segment of the market. Its earnings per employee was $8,454 for the last 12 months. Its revenue per employee was $139,332 for the same period. Waste Services, Inc. (NASDAQ:WSII) is the 9th most efficient company in this segment of the market. Its earnings per employee was $7,477 for the last 12 months. Its revenue per employee was $219,194 for the same period. Ecology and Environment (NASDAQ:EEI) is the 10th most efficient company in this segment of the market. Its earnings per employee was $6,176 for the last 12 months. Its revenue per employee was $136,057 for the same period.