About: http://webisa.webdatacommons.org/454071746

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	In other words, they will reduce the nitrates significantly, however if there are many other contaminants in the water such as heavy metals and other chemicals, this reduction will drop.
http://www.w3.org/ns/prov#wasQuotedFrom	bigberkeywaterfilters.com