Aqua America Inc.
(WTR)
www.aquaamerica.com

Badger Meter Inc.
(BMI)
www.badgermeter.com

Calgon Carbon Corp.
(CCC)
www.calgoncarbon.com

Ecosphere Technologies, Inc.
(ESPH.OB)
www.ecospheretech.com

Flexible Solutions
International Inc.
(FSI)
www.flexiblesolutions.com
Insituform Technologies Inc.
(INSU)
www.insituform.com

Layne Christensen Co.
(LAYN)
www.laynechristensen.com
LINDSAY CORPORATION
(LNN)
www.lindsay.com

Met-Pro Corp.
(MPR)
www.met-pro.com

N-Viro International Corp.
(NVIC.OB)
www.nviro.com

Ocean Power Technologies, Inc
(OPTT)
www.oceanpowertechnologies.com

Veolia Environnement SA
(VE)
www.veoliaenvironnement.com

Waters Corp.
(WAT)
www.waters.com