About: http://webisa.webdatacommons.org/199966693

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	More sophisticated filters will reduce lead and other metals, nitrates and other inorganic contamination.
http://www.w3.org/ns/prov#wasQuotedFrom	freshwatersystems.co.uk