- Alliance For Environmental Tech.
- Federal Web Locator
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- Great Lakes Information Network
- Michigan Chamber of Commerce
- Michigan Department of Environmental Quality (DEQ)
- Michigan Department of Natural Resources (DNR)
- National Sanitation Foundation International (NSF-Int)
- Pennsylvania Department of Environmental Protection
- Pollution Online
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- Sierra Club
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- Thomas
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- US Bureau of Reclamation
- US Department of the Interior
- US Environmental Protection Agency (EPA)
- US Geological Survey
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