The Airvac Vacuum Sewer System is a cost-effective, environmentally friendly alternative to traditional gravity sewers and septic systems. Because vacuum sewers are completely contained, there is no danger of sewage escaping into the environment. Vacuum sewers use small-diameter vacuum mains buried in shallow trenches, which means less digging, smaller equipment, and little disruption to yards and traffic. Also, the Airvac system will continue to function normally during a power outage with energy from a standby generator located at the vacuum station.