The Zone has its own integrated water supply system. Water is drawn from the Kadamprayar river and treated at a facility within the Zone. The system capacity is 1.5 million litres per day. A Common Effluent Treatment facility of one million litre per day capacity is established to process all the sewage and effluents let out from units. Zone units are required to send all their sewage and effluent to this treatment plant. Units are encouraged to undergo ISO 14000 certification.