As used in this article, the following terms shall have the
meanings indicated. "Shall" is mandatory; "may" is permissible.
BOD (denoting "biochemical oxygen demand")
The quantity of oxygen utilized in the biochemical oxidation
of organic matter in five days at 20° C., expressed as milligrams
per liter (mg/l). Quantitative determination of BOD shall be made
in accordance with procedures set forth in Standard Methods.
BUILDING DRAIN
That part of the lowest horizontal piping of a drain system
which receives the discharge from soil, waste and other drainage pipes
inside the walls of the building and conveys it to the building sewer.
BUILDING SEWER
A sanitary sewer which begins immediately outside of the
foundation wall of any building or structure being served and ends
at its connection to the public sewer.
CATEGORY A
Those sanitary sewer users who discharge normal domestic
strength wastewater with concentrations of BOD, suspended solids and
phosphorus no greater than the concentrations identified in the current
user charge system.
CATEGORY B
Those sanitary sewer users who discharge wastewater with
concentrations in excess of domestic strength wastewater as identified
in the current user charge system. Users whose wastewater exceeds
the concentration for any one of these parameters shall be in Category
B.
CHLORINE REQUIREMENT
The amount of chlorine, in mg/l, which must be added to sewage
to produce a chlorine residual as specified in the Wisconsin Pollutant
Discharge Elimination System (WPDES) permit, if required by the current
WPDES permit.
COMBINED SEWER
A sewer intended to receive both wastewater and stormwater
or surface water.
COMPATIBLE POLLUTANTS
Biochemical oxygen demand (BOD), suspended solids, phosphorous,
ammonia, nitrogen, TKN, pH or fecal coliform bacteria, plus additional
pollutants identified in the municipality's WPDES permit for
its wastewater treatment facility, provided that such facility is
designed to treat such additional pollutants and, in fact, does remove
such pollutants to a substantial degree.
EASEMENT
An acquired legal right for the specified use of land owned
by others.
FLOATABLE OIL
Oil, fat or grease in a physical state such that it will
separate by gravity from wastewater by treatment in an approved pretreatment
facility. Wastewater shall be considered free of floatable oil if
it is properly pretreated and the wastewater does not interfere with
the collection system.
GROUND GARBAGE
The residue from the preparation, cooking, dispensing, handling,
storage and sale of food products and produce that has been shredded
to such a degree that all particles will be carried freely in suspension
under the flow conditions normally prevailing in public sewers with
no particle greater than 1/2 inch in any dimension.
INCOMPATIBLE POLLUTANTS
Wastewater with pollutants that will adversely affect the
wastewater treatment facilities or disrupt the quality of wastewater
treatment if discharged to the wastewater treatment facilities.
INDUSTRIAL WASTE
Any solid, liquid or gaseous substance discharged or escaping
from any industrial, manufacturing or commercial establishment. Such
term includes any wastewater which is not sanitary sewage.
NATURAL OUTLET
Any outlet, including storm sewers and combined sewer overflows,
into a watercourse, pond, ditch, lake or other body of surface water
or groundwater.
NITROGEN
Ammonia nitrogen, expressed in mg/l of NH3N.
NORMAL DOMESTIC STRENGTH WASTEWATER
Wastewater with concentrations of BOD no greater than 220
mg/l, suspended solids no greater than 230 mg/l and phosphorus no
greater than seven mg/l.
OPERATION AND MAINTENANCE COSTS
Includes all costs associated with the operation and maintenance
of the wastewater treatment facilities, including administration and
replacement costs, all as determined from time to time by the municipality.
PERSON
Any and all persons, including any individual, firm, company,
municipality or private corporation, association, society, institution,
enterprise, governmental agency or other entity.
pH
The logarithm of the reciprocal of the hydrogen-ion concentration.
The concentration is the weight of hydrogen ions in grams per liter
of solution. Neutral water, for example, has a pH value of 7 and a
hydrogen-ion concentration of 10-7.
PHOSPHORUS
Total phosphorus and is expressed in mg/l of P (phosphorus).
PUBLICLY OWNED TREATMENT WORKS (POTW)
A treatment works including any devices and systems used
in the storage, treatment, recycling and reclamation of municipal
sewage and industrial waste. The systems include sewers, pipes and
equipment used to convey wastewater to the treatment facility. The
term also includes the municipality that owns and operates the facilities.
PUBLIC SEWER
Any publicly owned sewer, storm drain, sanitary sewer or
combined sewer.
REPLACEMENT COSTS
Expenditures for obtaining and installing equipment, accessories
or appurtenances which are necessary during the useful life of the
wastewater treatment facility to maintain the capacity and performance
for which such facilities were designed and constructed.
SANITARY SEWAGE
The combination of liquid and water-carried wastes discharged
from toilets and/or sanitary plumbing facilities.
SEWAGE
The spent water of a person or community. The preferred term
is "wastewater."
SEWER
A pipe or conduit that carries wastewater or drainage water.
SEWER SERVICE CHARGE
A charge levied on users of the wastewater collection and
treatment facilities for payment of operation, maintenance and replacement
expenses, debt service costs and other expenses or obligations of
said facilities.
SLUG
Any discharge of water or wastewater which in concentration
of any given constituent or in quantity of flow exceeds for any period
of duration longer than 15 minutes more than five times the average
twenty-four-hour concentration of flows during normal operation and/or
adversely affects the collection system and/or performance of the
wastewater treatment facility.
STANDARD METHODS
The examination and analytical procedures set forth in the
most recent edition of Standard Methods for the Examination of Water
and Wastewater published jointly by the American Public Health Association,
the American Water Works Association, and the Water Environment Federation.
STORM SEWER OR DRAIN
A drain or sewer for conveying water, groundwater, subsurface
water or unpolluted water from any source.
SUSPENDED SOLIDS (SS)
Expressed in mg/l shall mean total suspended matter that
either floats on the surface of or is in suspension in water, wastewater
or other liquids and that is removable by laboratory filtering as
prescribed in Standard Methods for the Examination of Water and Wastewater
and referred to as "nonfilterable residue."
UNPOLLUTED WATER
Water quality equal to or better than the effluent of the
wastewater treatment facilities or water that would not cause violation
of receiving water quality standards and would not be benefited by
discharge to the sanitary sewers and wastewater treatment facilities.
WASTEWATER
The spent water of a community or person. From the standpoint
of source, it may be a combination of the liquid and water-carried
wastes from residences, commercial buildings, industrial plants and
institutions together with any groundwater, surface water and stormwater
that may be present.
WASTEWATER TREATMENT FACILITY
An arrangement of devices and structures for treating wastewater
and biosolids. Also referred to as "wastewater treatment plant."