Photo Credits

Images on this site come from public-domain archives of U.S. government agencies and from photographers who publish their work under Creative Commons licenses. Each image is credited below, with a link to the original file and to its license. Where an image has been cropped, this is noted.

Homepage

• Wastewater treatment plant, aerial view — Photo: Isiwal, via Wikimedia Commons — CC BY-SA 4.0

Topic images

• Septic Systems — Photo: U.S. Navy (cropped), septic tank installation, Laem Chabang, Thailand — public domain
• Sewer Lines & Drainage — Photo: darkday., via Wikimedia Commons — CC BY 2.0
• Wastewater Treatment & Water Quality — Photo: U.S. Army Corps of Engineers, Sacramento District, water filtration project, Roosevelt, Utah — public domain
• Hazardous Waste & Regulations — Photo: US EPA, Great Lakes Legacy Act remediation, former Zephyr Oil Refinery site, Michigan — public domain
• Health, Odors & Pests — Photo: CDC / James Gathany, Culex larvae in standing water, Atlanta, Georgia — public domain
• Household Hazardous Waste Disposal — Photo: U.S. Department of Defense / National Archives (cropped), used oil recycling — public domain
• Grease Traps & FOG — Photo: Kai Kemmann, via Wikimedia Commons — CC BY-SA 4.0
• Rainwater, Cisterns & Greywater Reuse — Photo: SolingenFan95, via Wikimedia Commons — CC BY-SA 4.0
• RV & Mobile Systems — Photo: Mandruss, via Wikimedia Commons — CC BY-SA 3.0

Use of these images does not imply endorsement of this site by their authors or by the agencies that produced them.