Conceptual Design - Collinsville, IL Water Treatment Plant Collinsville Water Treatment Plant - Completed Project Conceptual Design - Collinsville Water Treatment Plant Conceptual Design Collinsville Water Treatment Plant Conceptual Collinsville Water Treatment Plant Slide 1 Slide 1 (current slide) Slide 2 Slide 2 (current slide) Slide 3 Slide 3 (current slide) Slide 4 Slide 4 (current slide) Slide 5 Slide 5 (current slide)