The Illinois Plumbing Code, as hereinbefore adopted, is amended in the following respects:
(A) Definitions: The following definitions are added supplemental to the definitions contained within the Illinois plumbing code;
“Code”: The latest edition of the Illinois plumbing code as adopted and amended by the village of Lisle.
“Existing Legal Non-Conforming Plumbing System”: A plumbing system, or portion thereof, presently in existence on a premises which lawfully existed prior to the enactment of this code and which complies with the plumbing code in effect at the time of installation.
“Existing Non-Conforming Piping”: Any part of an existing plumbing system installed without proper permit approval and which does not comply with the requirements of the plumbing code in effect at the time of installation.
“Strip Mall”: A single story commercial building arranged or divided into several occupiable areas, each with independent entrance and egress, lacking a common core area, with the potential need for the addition or reconfiguration of plumbing fixtures within each unit.
(B) Materials: Only the following materials are permitted for the following locations:
1. All PVC piping shall be primed and glued. Cell core PVC is not permitted.
2. Underground Water Supply Piping: Type “K” copper or ductile iron is permitted. Polyethylene plastic pipe or tubing may be used for private wells only.
3. Above Ground Water Supply Piping: Only type “L” copper, type “M” copper and properly installed cross-linked polyethylene tubing is permitted.
4. Repairs to existing plumbing systems using dissimilar materials shall be allowed only if the repair results in one material transition between the point of repair and the building sewer or waste/vent stack.
5. Fixture Supply Stops and Fixture Supply Lines: Non- metallic stops and slip-on stops/supply lines are not permitted. Fixture supply lines shall be copper tubing or flexible braided stainless steel fixture supplies sized for the use and installed without loops or kinks.
(a) Exception: Fixture supplies that are integral to the faucet by the manufacture will be allowed.
(C) Water And Sanitary Sewer Service: All building water and sewer services must comply with the following requirements:
1. Water and sewer services shall be installed a minimum of five feet (5') in depth and shall have a horizontal separation of ten feet (10').
2. All single-family residential building drains must be minimum four inch (4") in diameter. A commercial building sewer must be brought into the building a minimum of six inches (6") in diameter. All strip malls require six-inch (6") sanitary waste line for future tenant build out at thirty-six inches (36") below finished floor with six-inch (6") cleanout in last tenant space.
3. The minimum size water service is one inch (1"). Copper water service lines must be continuous one piece lengths of pipe from the service stop to the water meter.
4. A full port shut-off valve is required on the inlet side of the water meter. The first joint of the valve inlet shall be a flared type adapter with brass-threaded connections to meter adapter.
5. Private wells are prohibited within the corporate boundaries of the Village and must be sealed in accordance with the DuPage County Health Department regulations once connection to the public water system has occurred.
6. Minimum one-inch (1") cold water supply to water heater inlet or branch piping is required.
(D) Fixtures: The following special fixture requirements shall apply in the Village:
1. All residential kitchen sinks require a minimum two-inch (2") waste opening with two-inch (2") cleanout.
2. Commercial kitchens, deli’s, and catering business with triple bowl sinks and mop basins must have a ½" hot water supply at fifty four inches (54") above finish floor for future chemical feeder water supply.
3. Tank type urinals are not permitted.
4. All new plumbing fixtures and irrigation controllers installed after the effective date of this ordinance shall bear the WaterSense label (as designated by the U.S. Environmental Protection Agency WaterSense Program), when such labeled fixtures are available.
5. No residential water softeners may use more than seventy five (75) gallons (285 liters) during the entire regeneration cycle, and sized to cycle no more than three (3) times per week.
(E) Drainage System: The following additional requirements will apply to drainage systems:
1. Grease interceptors must be installed outside of a building in a location convenient to being pumped out. Outside grease interceptors must be properly vented into the building using a minimum three-inch (3") vent separately terminated thru roof.
(a) Exception 1: Non-grease producing kitchens & restaurants may install in floor grease interceptors meeting IL plumbing code and DuPage health department requirements.
(b) Exception 2: An inside grease trap may only be used with the prior approval of the plumbing inspector when field conditions absolutely prohibit the use of an outside grease trap.
2. Floor and/or trench drains are prohibited in private residential garages unless drained to all approved gas and oil interceptor. Drywells are not permitted.
3. Any proposed acid or chemical waste systems must be approved by the DuPage County department of environmental concerns.
4. Properly installed floor drains with tamper proof covers must be installed in each commercial restroom. In residential basements the floor drain must be within five feet (5') of a furnace, boiler or water heater.
5. Individual pump units for the use of lifting waste from a fixture is prohibited unless prior approval from the plumber inspector.
6. Floor drains in mechanical rooms, fire sprinkler equipment rooms, and adjacent to reduced pressure zone principle backflow preventor assembly (RPZ) must have eight and a half inch (81/2") round top with rough finish.
(F) Special Requirements: The following special requirements will apply:
1. Where piping is installed through studs, joist or rafters close enough to be pierced by nails, nail guards or stud guards must be installed.
2. All new or remodeled car wash facilities must have a water recycling system installed to recycle the water used for car washing.
3. A minimum two-inch (2") sewage pump is required where laundry facilities discharge into a sanitary ejector pit.
4. All irrigation sprinkler systems shall have unthreaded valve connections or hose bibbs after the reduced pressure zone principle backflow preventor assembly (RPZ). (Ord. 2022-4942, 1-3-2022)