Are all coliforms being pathogens?

No, not all coliforms are pathogens. Coliforms are a broad class of bacteria found in our environment, including the feces of man and other warm-blooded animals. The presence of coliforms in water is often used as an indicator of possible fecal contamination. While some types of coliforms like E. coli can cause disease, others are harmless. Therefore, it's not accurate to categorize all coliforms as pathogens.