Entex Technologies Inc. | 543 followers on LinkedIn. Clean water solutions company providing leading technology for advanced biological wastewater treatment and filtration | Entex is a clean water solutions company providing leading technology for comprehensive advanced biological wastewater treatment and filtration. Operating at the intersection of biotechnology, infrastructure and sustainability, Entex offers custom engineered solutions for the world’s clean water needs. Our Integrated Biofilm Systems improve the capacity and performance of municipal and industrial facilities at half the cost or less of traditional approaches.