| Business | Phone |
| Washington Hazardous Waste Div 2100 M L K Jr Ave Se, Washington 20020 | (202) 645-6080 |
| Washington Water Resources Div 2100 M L K Jr Ave Se, Washington 20020 | (202) 645-6601 |
| Washington Dc Solid Waste Dc Village Ln Sw, Washington 20032 | (202) 727-1000 |
| Washington Dc Environmental 51 N St Ne, Washington 20002 | (202) 535-2500 |
| Washington Dc Environmental 825 N Capitol St Ne, Washington 20002 | (202) 442-8982 |
| Washington Dc Solid Waste 2750 S Capitol St Se, Washington 20032 | (202) 727-1000 |
| Washington Dc Solid Waste 3220 Pennsylvania Ave Se, Washington 20020 | (202) 727-1000 |
| Washington Dc Water Resources 51 N St Ne, Washington 20002 | (202) 535-2190 |