| Trash | Republic Services | Second largest US private waste collection company | republicservices.com | @RepublicService |
| Trash | Waste Management Inc. | Largest US private waste collection and disposal company | wm.com | @WasteManagement |
| Sewage | Emaar Properties | Master developer of the Burj Khalifa; manages onsite MBR/RO filtration and mechanical wastewater infrastructure | burjkhalifa.ae | @BurjKhalifa |
| Sewage | The Durst Organization | Co-developer of One Bryant Park; pioneered the tower's onsite anaerobic digestion loop for blackwater processing | durst.org | @TheDurstOrg |
| Sewage | Salesforce Tower | Hosts the largest commercial high-rise blackwater recycling plant in the US, treating and reusing wastewater on-site | salesforcetower.com | @Salesforce |
| Sewage | The Solaire | First high-rise residential building in Battery Park City to deploy an in-house sequencing batch reactor and microfiltration loop | thesolaire.com | |
| Sewage | DLF Limited | Master private developer of DLF Cyber City, Gurgaon; deploys independent multi-tower decentralized sewage treatment plants | dlf.in | @DLF_Official |
| Sewage | Eko Atlantic | Private city administration managing a sovereign utilities network including dedicated subterranean waste processing plants | ekoatlantic.com | @EkoAtlantic |
| Sewage | Ciudad Morazan | Master-planned ZEDE startup city deploying self-contained localized waste and power utilities for residential neighborhoods | morazan.city | @CiudadMorazan |
| Sewage | Prospera ZEDE | Autonomous charter city on Roatan using decentralized private utility agreements for modular waste processing | prospera.hn | @ProsperaZEDE |