Nebraska Administrative Code › Topic - HEALTH AND HUMAN SERVICES SYSTEM › Title 179 - PUBLIC WATER SYSTEMS › Chapter 24 - STAGE 2 DISINFECTANTS AND DISINFECTION BYPRODUCTS (DBPs) › Section 179-24-002 - DEFINITIONS

Current through June 17, 2024
40/30 Certification
means the
				  certification a system provided to the Department saying the system met
				  criteria specified in 40 CFR 141 Subpart U which exempted it from completing an
				  initial distribution system evaluation.
Community Water System
means a
				  public water system which serves at least 15 service connections used by
				  year-round residents or regularly serves at least 25 year-round
				  residents.
Ground Water Under the Direct Influence of
				  Surface Water (GWUDI)
means any water beneath the surface of the
				  ground with significant occurrence of insects or other macroorganisms, algae,
				  or large-diameter pathogens such as
Giardia lamblia
or
Cryptosporidium
, or significant and relatively rapid shifts in
				  water characteristics such as turbidity, temperature, conductivity, or pH which
				  closely correlate to climatological or surface water conditions. Direct
				  influence must be determined for individual sources in accordance with criteria
				  established by the Department. The Department determination of direct influence
				  may be based on site-specific measurements of water quality and/or
				  documentation of well construction characteristics and geology with field
				  evaluation.
Haloacetic Acids 5 (HAA5)
means the
				  sum of the concentrations in milligrams per liter of the haloacetic acid
				  compounds (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid,
				  monobromoacetic acid, and dibromoacetic acid), rounded to two significant
				  figures after addition.
Locational Running Annual Average
				  (LRAA)
means the average of sample analytical results for samples
				  taken at a particular monitoring location during the previous four calendar
				  quarters.
Non-transient Non-community Water System means a public water
				  system that is not a community water system and that regularly serves at least
				  25 of the same individuals over 6 months per year.
Public Water System
means a system
				  for the provision to the public of water for human consumption through pipes
				  or, after August 5, 1998, other constructed conveyances, if such system has a
				  least fifteen service connections or regularly serves an average of at least
				  twenty-five individuals daily at least 60 days out of the year. Such term
				  includes: any collection, treatment, storage, and distribution facilities under
				  control of the operator of such system and used primarily in connection with
				  such system; and any collection or pretreatment storage facilities not under
				  such control which are used primarily in connection with such system. Such term
				  does not include any "special irrigation district." A public water system is
				  either a "community water system" or a "non-community water system."
Total Organic Carbon (TOC)
means
				  total organic carbon in mg/L measured using heat, oxygen, ultraviolet
				  irradiation, chemical oxidants, or combinations of these oxidants that convert
				  organic carbon to carbon dioxide, rounded to two significant figures.
Total Trihalomethanes (TTHMs)
means
				  the sum of the concentration in milligrams per liter of the trihalomethane
				  compounds [trichloromethane (chloroform), dibromochloromethane,
				  bromodichloromethane, and tribromomethane (bromoform)], rounded to two
				  significant figures.