TerraLoop: A Community-Powered Climate and Waste Intelligence Grid is a web-based system developed to support environmental sustainability through community involvement and accessible digital tools. The platform serves as a shared space for climate information, waste reporting, and sustainability-related content, allowing users to actively participate in environmental initiatives. It was created in response to common issues such as low community engagement, scattered environmental data, and the absence of an organized system for monitoring waste and climate-related concerns. Through its interactive features and data visualization capabilities, TerraLoop encourages collaboration among individuals, content contributors, and administrators in promoting environmental responsibility. The quality and performance of the system were examined using the ISO 9126 Software Quality Model. This evaluation framework measures key software attributes, including functionality, reliability, usability, and efficiency, to determine how well the system meets user needs and technical standards. The assessment confirms that TerraLoop is capable of delivering a secure, efficient, and user-friendly platform that supports community-driven environmental awareness and sustainable practices.