All Black Hawk County residents are invited to the annual Energy & Environmental Fair, Saturday September 25th at Cedar Falls Utilities. The fair runs 9:00- 2:00 and is co-sponsored by Cedar Falls Utilities and the Black Hawk County Solid Waste Management Commission. The commission is funding a free household hazardous materials drop-off event for Black Hawk County residents. To see a list of toxic materials that will be accepted at the event, click here. The commission is subsidizing a one-day sale of backyard compost bins for $40, and new this year, 55 gallon rain barrels for $50. For more details about the compost bin or rain barrel, view the flyer. To further promote backyard composting, free composting workshops will be held for the public. Information can also be found at the link below, or call the Waste Trac Education Team at (319) 266-8722.