Profile: Pre-Mac International Ltd. is a provider of water purification systems. We design and manufacture water purification systems for civilian, aid agencies, and military markets. Our Water control center is a self contained, stand-alone water treatment, purification, and distribution 20 ft ISO container unit. It is designed for rapid deployment and rapid response. It is transportable by standard flatbed lorry, commercial, and military aircraft. Our chlorine re-dosing unit is designed as a skid mounted unit to maintain chlorination levels in pre-treated water for semi-permanent and long-term camp operations. It incorporates automatic chlorine biocide re-dosing and monitoring.