Wisconsin Code § 145.01

Definitions
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In this chapter:
(1) AUTOMATIC FIRE SPRINKLER CONTRACTOR. “Automatic
fire sprinkler contractor” means any individual, firm or corporation who has paid the annual license fee and obtained a license to
conduct a business in the design, installation, maintenance or repair of automatic fire sprinkler systems.
(2) AUTOMATIC FIRE SPRINKLER SYSTEM. “Automatic fire
sprinkler system”, for fire protection purposes, means an integrated system of underground and overhead piping designed in
accordance with fire protection engineering standards. The system includes a suitable water supply, such as a gravity tank, fire
pump, reservoir or pressure tank or connection beginning at the
supply side of an approved gate valve located at or near the property line where the pipe or piping system provides water used exclusively for fire protection and related appurtenances and to
standpipes connected to automatic sprinkler systems. The portion of the sprinkler system above ground is a network of specially sized or hydraulically designed piping installed in a building, structure or area, generally overhead, and to which sprinklers
are connected in a systematic pattern. The system includes a controlling valve and a device for actuating an alarm when the system
is in operation. The system is usually activated by heat from a fire
and discharges water over the fire area.
(3) AUTOMATIC FIRE SPRINKLER SYSTEM APPRENTICE. “Automatic fire sprinkler system apprentice” means any person other
than an automatic fire sprinkler system contractor or a journeyman automatic fire sprinkler system fitter who is engaged in
learning and assisting in the installation of automatic fire sprinkler systems and who is employed under an apprentice contract
under s. 106.01.
(3m) CROSS-CONNECTION CONTROL DEVICE. “Cross-connection control device” means any mechanical device that automatically prevents backflow from a contaminated source in or
into a water supply system.
(3s) CROSS-CONNECTION CONTROL TESTER. “Cross-connection control tester” means a person who conducts a performance
test of an installed cross-connection control device.
(4) DEPARTMENT. “Department” means the department of
safety and professional services.
(4m) FAILING PRIVATE ON-SITE WASTEWATER TREATMENT
SYSTEM. “Failing private on-site wastewater treatment system”
means a private on-site wastewater treatment system that meets
the criteria established by the department for determining if a private on-site wastewater treatment system is failing. A failing private on-site wastewater treatment system is one that causes or results in any of the following conditions:
(a) The discharge of sewage into surface water or
groundwater.
(b) The introduction of sewage into zones of saturation that
adversely affects the operation of a private on-site wastewater
treatment system.
(c) The discharge of sewage to a drain tile or into zones of
bedrock.
(d) The discharge of sewage to the surface of the ground.
(e) The failure to accept sewage discharges and back up of
sewage into the structure served by the private on-site wastewater
treatment system.
(5) GOVERNMENTAL UNIT RESPONSIBLE FOR REGULATION OF
PRIVATE ON-SITE WASTEWATER TREATMENT SYSTEMS. “Governmental unit responsible for the regulation of private on-site
wastewater treatment systems” or “governmental unit”, unless
otherwise qualified, means the county except that in a county
with a population of 750,000 or more these terms mean the city,
village or town where the private on-site wastewater treatment
system is located.
(6) JOURNEYMAN AUTOMATIC FIRE SPRINKLER FITTER.
“Journeyman automatic fire sprinkler fitter” means any person
other than an automatic fire sprinkler contractor who is engaged
in the practical installation of automatic fire sprinkler systems.
(7) JOURNEYMAN PLUMBER. “Journeyman plumber” means
any person other than a master plumber, who is engaged in the
practical installation of plumbing.
(8) MASTER PLUMBER. “Master plumber” means any person
skilled in the planning, superintending and the practical installation of plumbing and familiar with the laws, rules and regulations
governing the same.
(9) PIPELAYER. “Pipelayer” means a person registered under
s. 145.07 (11).
(10) PLUMBING. (a) “Plumbing” means:
1. All piping, fixtures, appliances, equipment, devices, and
appurtenances in connection with water supply systems, water
distribution systems, wastewater drainage systems, reclaimed water systems, and stormwater use systems, including hot water storage tanks, water treatment devices, and water heaters connected
with these systems and also includes the installation thereof.
2. The construction, connection, installation, service, or repair of any drain or wastewater piping system that connects to the
mains or other terminal within the bounds of, or beneath an area
subject to easement for highway purposes, including private onsite wastewater treatment systems and stormwater treatment and
dispersal systems, and the alteration of any such systems, drains
or wastewater piping.
3. The construction, connection, installation, service, or repair of water service piping that connects to the main or other wa-

ter utility service terminal within the bounds of, or beneath an
area subject to easement for highway purposes and its
connections.
4. The water pressure system other than municipal systems
as provided in ch. 281.
5. A plumbing and drainage system so designed and vent piping so installed as to keep the air within the system in free circulation and movement; to prevent with a margin of safety unequal air
pressures of such force as might blow, siphon or affect trap seals,
or retard the discharge from plumbing fixtures, or permit sewer
air to escape into the building; to prohibit cross-connection, contamination or pollution of the water supply and distribution systems; and to provide an adequate supply of water to properly
serve, cleanse and operate all fixtures, equipment, appurtenances
and appliances served by the plumbing system.
(br) “Plumbing” does not include any of the following:
1. A rainwater gutter or downspout down to the point that it
discharges into a plumbing system, a subsoil drain, or a foundation drain.
2g. A process water reuse system if the process water reuse
system is not connected to any plumbing fixture or appliance.
2m. A stormwater culvert under a roadway or walkway that is
placed there only to equalize the water level from one end of the
culvert to the other end.
3. The practical installation of process piping within a
sewage disposal plant.
(11) PLUMBING APPRENTICE. “Plumbing apprentice” means
any person other than a journeyman or master plumber who is engaged in learning and assisting in the installation of plumbing and
drainage.
(12) PRIVATE ON-SITE WASTEWATER TREATMENT SYSTEM.
“Private on-site wastewater treatment system” means a sewage
treatment and disposal system serving a single structure with a
septic tank and soil absorption field located on the same parcel as
the structure. This term also means an alternative sewage system
approved by the department including a substitute for the septic
tank or soil absorption field, a holding tank, a system serving
more than one structure or a system located on a different parcel
than the structure. A private on-site wastewater treatment system
may be owned by the property owner or by a special purpose
district.
(13) REGISTERED LEARNER. “Registered learner” means a
person, other than a restricted plumber licensee, who is learning
a limited type of plumbing and is engaged in assisting a restricted
plumber licensee.
(14) RESTRICTED PLUMBER LICENSEE. “Restricted plumber
licensee” means any person licensed as a master plumber (restricted) or a journeyman plumber (restricted) under s. 145.14.
(15) UTILITY CONTRACTOR. “Utility contractor” means a
person licensed under s. 145.07 (10).
(17) WATERS OF THE STATE. “Waters of the state” has the
meaning specified under s. 281.01 (18).

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