SPS 381.01(264) (264) “Unsaturated soil” means soil in which the pore spaces contain water at less than atmospheric pressure, as well as air and other gases.

SPS 381.01(265) (265) “Vacuum” means any pressure less than that exerted by the atmosphere.

SPS 381.01(265e) (265e) “Vacuum breaker tee” means an assembly of fittings designed to eliminate the possibility of back siphonage in a system by allowing air to enter through a tee fitting.

SPS 381.01(266) (266) “Vacuum relief valve” means a device that admits air into the water distribution system to prevent excessive vacuum in a water storage tank or heater.

SPS 381.01(266m) (266m) “Vector control” means any method to limit or eradicate the mammals, birds, insects or other arthropods, collectively called ”vectors,” which transmit disease pathogens.

SPS 381.01(267) (267) “Vent” means a part of the plumbing system used to equalize pressures and ventilate the system.

SPS 381.01(268) (268) “Vent header” means a branch vent which connects 2 or more stack vents or vent stacks or both and extends to the outside air.

SPS 381.01(269) (269) “Vent stack” means a vertical vent pipe that provides air for a drain stack of 5 or more branch intervals.

SPS 381.01(270) (270) “Vent system” means a pipe or pipes installed to provide a flow of air to or from a drain system, or to provide a circulation of air within the system to protect trap seals from siphonage and back pressure.

SPS 381.01(271) (271) “Vertical pipe” means any pipe or fitting which makes an angle of 45° or less with the vertical.

SPS 381.01(272) (272) “Wall hydrant, freeze resistant automatic draining type vacuum breaker” means a type of device which is designed and constructed with anti-siphon and back pressure preventive capabilities and with means for automatic post shut-off draining to prevent freezing.

SPS 381.01(273) (273) “Wall mounted water closet” means a water closet attached to a wall in such a way that it does not touch the floor.

SPS 381.01(273e) (273e) “Washer sanitizer” means a plumbing appliance used for washing and disinfecting equipment.

SPS 381.01(274) (274) “Waste” means the discharge from any fixture, appliance, area or appurtenance.

SPS 381.01(275) (275) “Waste sink” means a receptor for the discharge from indirect or local waste piping installed with its flood level rim above the surrounding floor.

SPS 381.01(276) (276) “Wastewater” means clear water, storm water, domestic wastewater, industrial wastewater, sewage or any combination of these.

SPS 381.01(277) (277) “Wastewater, treated” means the effluent conveyed through one or more POWTS treatment components to a POWTS dispersal component.

SPS 381.01(277e) (277e) “Wastewater treatment device” means a device or method that is intended to beneficially alter the characteristics of wastewater.

SPS 381.01(278) (278) “Water closet” means a water-flushed plumbing fixture designed to receive human excrement directly from the user of the fixture.

SPS 381.01(279) (279) “Water conditioner” means an appliance, appurtenance or device used for the purpose of ion exchange, demineralizing water or other methods of water treatment.

SPS 381.01(280) (280) “Water distribution system” means that portion of a water supply system from the outlet of the building control valve to the connection of a fixture supply connector, plumbing fixture, plumbing appliance, water-using equipment, or other piping systems to be served.

SPS 381.01(281) (281) “Water heater” means any heating device with piping connections to the water supply system that is intended to supply hot water for domestic or commercial purposes other than space heating.

SPS 381.01(281m) (281m) “Water operator-in-charge” means the person designated by the owner of the building waterworks to be directly responsible for the day-to-day operations of the waterworks.

SPS 381.01 Note Note: Per s. NR 114.03(15), “waterworks” means a community water system owned by, or a private utility serving, a county, city, village, town, town sanitary district, utility district or a county-owned or state-owned public institution for congregate care or correction, which includes but is not limited to correctional institutions, correctional camp systems, county jails or houses of correction, mental health institutes, schools for the handicapped, hospitals, infirmaries and asylums.

SPS 381.01(282) (282) “Water service” means that portion of a water supply system from the water main or private water supply up to and including the building control valve.

SPS 381.01(283) (283) “Waters of the state” has the meaning specified under s. 281.01 (18), Stats.

SPS 381.01 Note Note: Section 281.01 (18), Stats., reads:

SPS 381.01 Note “Waters of the state” means those portions of Lake Michigan and Lake Superior within the boundaries of Wisconsin, all lakes, bays, rivers, streams, springs, ponds, wells, impounding reservoirs, marshes, watercourses, drainage systems and other surface water or groundwater, natural or artificial, public or private within the state or under its jurisdiction.

SPS 381.01(284) (284) “Water supply system” means the piping of a private water main, water service and water distribution system, fixture supply connectors, fittings, valves, and appurtenances through which water is conveyed to points of usage such as plumbing fixtures, plumbing appliances, water using equipment or other piping systems to be served.