NSF ANSI 330-2019 pdf free download – Glossary of Drinking Water Treatment Unit Terminology.
3.59 effluent: See water.
3.60 endpoint device: Any single device typically installed within the last 1 L (0.26 gal) of the water distribution system.
3.61 evaporating chamber: (As used in NSF/ANSI 62) See distillation.
3.62 exhaustion point: (As used in NSF/ANSI 44) See water softener.
3.63 exposure water: See water.
3.64 extractant water: See water.
3.65 fiber: A particle with a length three or more times the width or diameter (excludes organisms).
3.66 filter: (noun) A device for carrying out the process of filtration consisting of the medium and suitable hardware for constraining and supporting the medium in the path of the water. (verb) To pass water through a permeable medium to separate particles from the water.
3.67 filter area: The effective area at which water first contacts the filter medium.
3.68 filter medium: See media.
3.69 filtration: The process by which particles are separated from water by passing water through a permeable material.
3.70 filtration media: See media.
3.71 flow control: A device for controlling the flow rate of a specified stream.
3.72 flow rate: The volume of water that passes through a system in a specified time period.
3.73 gaskets and sealing materials: Materials used to fill a void or joint to prevent leakage.
3.74 grains per gallon (GPG): See water softener.
3.75 greywaste: See UV light disinfection.
3.76 hardness: See water softener.
3.77 hardness leakage: See water softener.
3.78 health hazards: Established health hazards are materials or contaminants for which maximum contaminant levels (MCL) are listed in the US EPA Primary Drinking Water Regulations, maximum acceptable concentrations (MAC) are listed by Health Canada’s Guidelines for Canadian Drinking Water Quality, and microorganisms of health concern. Potential health hazards include materials or contaminants which may be suspected of adverse health effects but for which the MCL or MAC has not been established in the US EPA Primary Drinking Water Regulations or Health Canada Guidelines for Canadian Drinking Water Quality, respectively.
3.79 heterotrophic plate count (HPC): Bacterial enumeration used to estimate bacterial density in water.
3.80 influent: See water.
3.81 influent challenge: The mixture of water and contaminants entering a water treatment system.
3.82 influent water zone: See zones (contact surfaces).
3.83 initial dynamic pressure: See pressure.
3.84 in-line device: Any device in contact with the water installed on a service line or distribution system downstream of the water main and upstream from endpoint devices.
3.85 installation: The act of connecting components including piping, structural support, and valving,and by which water treatment systems are connected to the water system and drain.
3.86 integral: Joined as one piece.
3.87 intermittent flow rate: (As used in NSF/ANSI 44) See water softener.
3.88 ion: An atom or molecule that carries a positive or negative electric charge.
3.89 ion exchange: See water softener.
3.90 ion exchange media: See media.
3.91 ion exchange resins: See water softener.
3.92 irradiance: (As used in NSF/ANSI 55) See UV light disinfection.
3.93 joining material: Any substance used to produce a fluid-tight joint (solvent cements, adhesive,sealant, etc.) between two or more components.
3.94 joint: A surface of contact between two bodies or masses of material of like or different character or composition.
3.95 lifetime health advisory (LHA) 3 : The concentration of a chemical in drinking water that is not expected to cause any adverse non-carcinogenic effects for a lifetime of exposure, incorporating a drinking water relative source contribution (RSC) factor of contaminant-specific data or a default of 20% of total exposure from all sources. For LHA developed for drinking water contaminants before the LHA policy change to develop LHAs for all drinking water contaminants regardless of carcinogenicity status in this Drinking Water Standards and Health Advisories (DWSHA) update, the LHA for Group C carcinogens (possible human carcinogen), as indicated by the 1 986 Cancer Guidelines, includes an uncertainty adjustment factor of 1 0 for possible carcinogenicity.NSF ANSI 330 pdf download