Ch 15 - Alternate Water Sources Flashcards
True or False
Alternate water source systems shall be designed in accordance with this chapter by a person registered or licensed to perform plumbing design work.
TRUE
Alternate water source systems shall be designed in accordance with this chapter by a licensed plumbing contractor or a registered design professional. Components, piping, and fittings used in any alternate water source system shall be listed.
2024 UPC - 1501.2 System Design.
Fill in the blank
If a gray water installation exceeds a maximum discharge capacity of 250 gallons per day, it must be designed by a _____.
Registered Design Professional
(1) A registered design professional is not required to design gray water systems having a maximum discharge capacity of 250 gallons per day (gal/d) (0.011 L/s) for single family and multi-family dwellings. (2) A registered design professional is not required to design an on-site treated nonpotable water system for single-family dwellings having a maximum discharge capacity of 250 gal/d (0.011 L/s).
2024 UPC - 1501.2 System Design.
What is the size of the visible lettering on signage for each room that contains alternate water source non-potable water and equipment?
1 inch
Each room containing reclaimed (recycled) water and on-site treated water equipment shall have a sign posted in a location that is visible to anyone working on or near nonpotable water equipment with the following wording in 1 inch (25.4 mm) letters: CAUTION: NONPOTABLE _____, DO NOT DRINK. DO NOT CONNECT TO DRINKING WATER SYSTEM. NOTICE: CONTACT BUILDING MANAGEMENT BEFORE PERFORMING ANY WORK ON THIS WATER SYSTEM. “_____*Shall indicate RECLAIMED (RECYCLED) WATER or ON-SITE TREATED WATER, accordingly.
2024 UPC - 1501.9.1 Equipment Room Signs.
Fill in the blank
If a cross-connection is discovered, the system for potable water must be chlorinated with _____.
50 parts-per-million
(5) The potable water system shall be chlorinated with 50 parts-per-million (ppm) chlorine for 24 hours.
2024 UPC - 1502.3.3 Discovery of Cross-Connection.
Fill in the blank
When gray water systems are designed, they must be able to distribute the total estimated amount of gray water on a _____.
Daily Basis
Gray water systems shall be designed to have the capacity to accommodate peak flow rates and distribute the total amount of estimated gray water on a daily basis to a subsurface irrigation field, subsoil irrigation field, or mulch basin without surfacing, ponding, or runoff.
2024 UPC - 1503.2.1 Surge Capacity.
What is the minimum distance between a gray water disposal field and a septic tank?
5 feet
No gray water system or part thereof shall be located on a lot other than the lot that is the site of the building or structure that discharges the gray water, nor shall a gray water system or part thereof be located at a point having less than the minimum distance indicated in Table 1503.4.
2024 UPC - 1503.4 Location. 2024 UPC - Table 1503.4: Location of Gray Water System (page 258)
Fill in the blank
Aboveground and underground building drainage and vent pipe and fittings for gray water systems must extend a min. of _____ outside the building.
2 feet
Aboveground and underground building drainage and vent pipe and fittings for gray water systems shall comply with the requirements for aboveground and underground sanitary building drainage and vent pipe and fittings in this code. These materials shall extend not less than 2 feet (610 mm) outside the building.
2024 UPC - 1503.9.2 Gray Water Pipe and Fitting Materials.
Fill in the blank
All valves must be _____.
Accessible
Valves shall be accessible.
2024 UPC - 1503.9.5 Valves.
Fill in the blank
Any excavation for a disposal field, irrigation field, or mulch basin must be at least _____feet vertically from the highest known seasonal groundwater level, and must not extend to a depth where gray water might contaminate the groundwater or surface water.
3 feet
No excavation for an irrigation field, disposal field, or mulch basin shall extend within 3 feet (914 mm) vertical of the highest known seasonal groundwater level, nor to a depth where gray water contaminates the groundwater or surface water. The applicant shall supply evidence of groundwater depth to the satisfaction of the Authority Having Jurisdiction.
2024 UPC - 1504.4 Groundwater Level.
What is the minimum depth below finished grade for gray water supply piping, including drip feeders, before they are covered with mulch?
2 inches
Supply piping, including drip feeders, shall be not less than 2 inches (51 mm) below finished grade and covered with mulch or soil.
2024 UPC - 1504.5.2 Minimum Depth.
What is the maximum downstream pressure from a pump serving a gray water irrigation field?
20 psi
Where pressure at the discharge side of the pump exceeds 20pounds-force per square inch (psi) (138 kPa), a pressure-reducing valve able to maintain downstream pressure not exceeding20 psi (138 kPa) shall be installed downstream from the pump and before an emission device.
2024 UPC - 1504.5.7 Maximum Pressure.
What may a reclaimed water system NOT be connected to?
Potable water system
Reclaimed (recycled) water systems shall have no connection to a potable water supply or alternate water source system. Potable water is permitted to be used as makeup water for a reclaimed(recycled) water storage tank provided the water supply inlet is protected by an air gap or reduced-pressure principle backflow preventer in accordance with this code.
2024 UPC - 1505.4 Connections to Potable or Reclaimed (Recycled) Water Systems.
What kind of valve does not need to be equipped with a locking feature?
Fixture supply control valves
Valves, except fixture supply control valves, shall be equipped with a locking feature.
2024 UPC - 1506.11 Valves.
