Mohali’s rapid rise as Punjab’s smartest city has brought gleaming high-rises in Aerocity, luxury villas in Sunny Enclave, and premium apartments in Sector 70–115. Yet, one space silently suffers: the bathroom. Hard water from the Ghaggar River, 80 % monsoon humidity, and Punjab’s oil-rich cooking culture create a perfect storm of limescale, soap scum, black mold, and...