About: http://webisa.webdatacommons.org/434403524

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Total trihalomethanes (TTHM) are the most common byproducts of chlorine in the water system reacting to algae, leaves and other organic materials, said Michael C. Moon, director of the Manassas Public Works Department.
http://www.w3.org/ns/prov#wasQuotedFrom	waterwebster.com