A-3 USA
A-3 supplies plants and equipment that apply membrane technology to water and wastewater treatment process. Products include:
Membrane Bioreactors (MBR)- Plate Microfiltration (MF)Membranes Ultrafiltration (UF), Nanofiltration (NF)& Reverse Osmosis (RO) Plants DC,DE,MD,NJ,PA.VA.WV

Air Diffusion Systems
Tubular Lagoon and Channel Aeration Systems
DC, DE, MD, NJ, PA, VA, WV

Entex Technologies, Inc.
Integrated Fixed-Film/Activated Sludge Technologies
DC, DE, MD, NJ, PA, VA, & WV

FE Systems
Custom design Troll™ collector system
Collector Failure (CFP) Monitoring System
BOSS™ Biologically Optimized Sludge Removal System
PA counties west of & including Fulton, Huntingdon, Center, Clearfield, Cameron & McKean
WV entire state
MD counties of Garrett & Allegany
Ohio Counties of Washington, Monroe Belmont, Jefferson & Columbiana

ITT Advanced Water Systems
Waste Treatment batch Reactors
DC, DE, MD, NJ, PA, Northern VA & WV

KA Wastewater Treatment Package Plants
Steel Continuous Inflow SBR Systems
Extended Aeration Plants
DC, DE, MD, NJ, PA, VA, & WV