Hard Water

GPTKB entity

Statements (24)
Predicate Object
gptkbp:instanceOf Water type
gptkbp:affects Soap efficiency
gptkbp:can_be_permanent Yes
gptkbp:can_be_softened_by Ion exchange
Reverse osmosis
gptkbp:can_be_treated_by Boiling (for temporary hardness)
Chemical softeners
gptkbp:canBeTemporary Yes
gptkbp:cause Appliance scaling
Limescale formation
Plumbing issues
gptkbp:characteristic High mineral content
gptkbp:contains Calcium ions
Magnesium ions
gptkbp:foundIn Groundwater sources
https://www.w3.org/2000/01/rdf-schema#label Hard Water
gptkbp:is_less_common_in Rainwater
gptkbp:measures Degrees of hardness
Parts per million (ppm)
Water hardness
gptkbp:permanent_hardness_caused_by Sulfate minerals
gptkbp:temporary_hardness_caused_by Bicarbonate minerals
gptkbp:bfsParent gptkb:Jean_Sprackland
gptkbp:bfsLayer 6