Name	Info	Provider	Link
Water Pollution	free resource	MedlinePlus Health Information	https://medlineplus.gov/waterpollution.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:17120661
	subscription/membership/fee required	Silverchair Information Systems	https://iwaponline.com/wst/article-lookup/doi/10.2166/wst.2006.597