Infectious waste Find out how to get approval for handling or storing sewage and other infectious waste. Apply for a portable toilet permit How to apply for a permit for a portable toilet for a public event. Apply for a storage/holding tank permit How to apply for a permit for a storage/holding tank for sewage waste storage. Request a permit for a septic system or private sewer line How to request a permit to install or repair a septic system or install a private sewer line. Submit a plan for handling infectious waste at a health care facility How to submit a plan for the handling of infectious waste at a health care facility in Philadelphia.