1502.5 Abandonment. Alternate water source systems that

are no longer in use or fail to be maintained in accordance with Section 1501.5 shall be abandoned. Abandonment shall comply with Section 1502.5.1 and Section 1502.5.2.

(A) All gray water systems shall be designed with a diverter

valve to allow the user to direct the flow to the building sewer and either the irrigation field or disposal field, whichever is used. The means of changing the direction flow of the gray water shall be clearly labeled and read- ily accessible to the user. (B) Water used to wash diapers or similarly soiled or infec-

tious garments or other prohibited contents shall be

(B) Water used to wash diapers or similarly soiled or infec-

tious garments or other prohibited contents shall be diverted by the user to the building sewer. (C) Gray water shall not be used in spray irrigation, allowed

to pond or runoff and shall not be discharged directly

(C) Gray water shall not be used in spray irrigation, allowed

to pond or runoff and shall not be discharged directly into or reach any storm sewer system or any surface body of water. (D) Human contact with gray water or the soil irrigated by

gray water shall be minimized and avoided, except as

(D) Human contact with gray water or the soil irrigated by

gray water shall be minimized and avoided, except as required to maintain the gray water system. The dis- charge point of any gray water subsoil irrigation or sub- surface irrigation field shall be covered by at least two (2) inches (51 mm) of mulch, rock, or soil, or a solid shield to minimize the possibility of human contact. (E) Gray water may be released above the ground surface

provided at least two (2) inches (51 mm) of mulch, rock,

(E) Gray water may be released above the ground surface

provided at least two (2) inches (51 mm) of mulch, rock, or soil, or a solid shield covers the release point. Other methods which provide equivalent separation are also acceptable. (F) Gray water shall not contain hazardous chemicals

derived from activities such as cleaning car parts, wash-

1502.5.1 General. An abandoned system or part thereof covered under the scope of this chapter shall be disconnected from remaining systems, drained, plugged, and capped in an approved manner. 1502.5.2 Underground Tank. An underground water storage tank that has been abandoned or otherwise discontinued from use in a system covered under the scope of this chapter shall be completely drained and filled with earth, sand, gravel, concrete, or other approved material or removed in a manner satisfactory to the Authority Having Jurisdiction.

(1) [HCD 1] The prohibition in Subsection (F) includes,

but is not limited to, home photo labs or other similar hobbyist or home occupational activities. (2) [BSC] Photo labs or similar activities. (G) Exemption from construction permit requirements of this

code shall not be deemed to grant authorization for any

Gray water shall not contain hazardous chemicals

derived from activities such as cleaning car parts, wash- ing greasy or oily rags, or disposing of waste solutions. (1) [HCD 1] The prohibition in Subsection (F) includes,

but is not limited to, home photo labs or other similar

An operation and maintenance manual shall be provided to

the owner. Directions shall indicate that the manual is to remain with the building throughout the life of the system and upon change of ownership or occupancy.

(G) Exemption from construction permit requirements of this

code shall not be deemed to grant authorization for any gray water system to be installed in a manner that vio- lates other provisions of this code or any other laws or ordinances of the Enforcing Agency. (H) An operation and maintenance manual shall be provided to

the owner. Directions shall indicate that the manual is to

312 2019 CALIFORNIA PLUMBING CODE

any other purpose or distributed to any other persons or part ies. ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS

(I) A gray water system shall not be connected to any potable water system without an air gap, reduced-pres- sure principle backflow preventer, or other physical device which prevents backflow and shall not cause ponding or runoff of gray water. 1503.1.1 [HCD 1] Clothes Washer System. A clothes washer system in compliance with all of the fol- lowing is exempt from the construction permit specified in Section 1.8.4.1 and may be installed or altered with- out a construction permit: (1) If required, notification has been provided to the

enforcing agency regarding the proposed location

(13)Gray water discharge from a clothes washer system

through a standpipe shall be properly trapped in

(13)Gray water discharge from a clothes washer system

through a standpipe shall be properly trapped in accordance with Section 1005.0. 1503.1.2 Simple System. Simple systems exceed a clothes washer system and shall comply with the follow- ing: (1) The discharge capacity of a gray water system shall

be determined by Section 1503.8. Simple systems

(1) If required, notification has been provided to the

enforcing agency regarding the proposed location and installation of a gray water irrigation or dis- posal system. (2) The design shall allow the user to direct the flow to

the irrigation or disposal field or the building sewer.

(1) The discharge capacity of a gray water system shall

be determined by Section 1503.8. Simple systems have a discharge capacity of 250 gallons (947 L) per day or less. (2) Simple systems shall require a construction permit,

unless exempted from a construction permit by the

(2) The design shall allow the user to direct the flow to

the irrigation or disposal field or the building sewer. The direction control of the gray water shall be clearly labeled and readily accessible to the user. (3) The installation, change, alteration, or repair of the

system does not include a potable water connection

(3) The installation, change, alteration, or repair of the

system does not include a potable water connection or a pump and does not affect other building, plumb- ing, electrical, or mechanical components including structural features, egress, fire-life safety, sanitation, potable water supply piping, or accessibility. Note: The pump in a clothes washer shall not be considered part of the gray water system. (4) The gray water shall be contained on the site where

it is generated.

(2) Simple systems shall require a construction permit,

unless exempted from a construction permit by the Enforcing Agency. The Enforcing Agency shall con- sult with the water purveyor for any public water sys- tem (as defined in Health and Safety Code Section 116275) providing drinking water to the dwelling or non-residential structure before allowing an exemp- tion from a construction permit. (3) The design of simple systems shall meet generally

accepted gray water system design criteria.

(3) The design of simple systems shall meet generally

accepted gray water system design criteria. 1503.1.3 Complex System. Any gray water system that is not a clothes washer system or simple system shall comply with the following: (1) The discharge capacity of a gray water system shall be

determined by Section 1503.8. Complex systems have

(4) The gray water shall be contained on the site where

it is generated. (5) Gray water shall be directed to and contained within

an irrigation or disposal field.

(1) The discharge capacity of a gray water system shall be

determined by Section 1503.8. Complex systems have a discharge capacity over 250 gallons (947 L) per day. (2) Complex systems shall require a construction permit,

unless exempted from a construction permit by the

(5) Gray water shall be directed to and contained within

an irrigation or disposal field. (6) Ponding or runoff is prohibited and shall be consid-

ered a nuisance.

(6) Ponding or runoff is prohibited and shall be consid-

ered a nuisance. (7) Gray water may be released above the ground sur-

face provided at least two (2) inches (51 mm) of

(7) Gray water may be released above the ground sur-

face provided at least two (2) inches (51 mm) of mulch, rock, or soil, or a solid shield covers the release point. Other methods which provide equiva- lent separation are also acceptable. (8) Gray water systems shall be designed to minimize

contact with humans and domestic pets.

(8) Gray water systems shall be designed to minimize

contact with humans and domestic pets. (9) Water used to wash diapers or similarly soiled or

infectious garments shall not be used and shall be

(9) Water used to wash diapers or similarly soiled or

infectious garments shall not be used and shall be diverted to the building sewer. (10)Gray water shall not contain hazardous chemicals

derived from activities such as cleaning car parts,

(2) Complex systems shall require a construction permit,

unless exempted from a construction permit by the Enforcing Agency. The Enforcing Agency shall con- sult with the water purveyor for any public water sys- tem (as defined in Health and Safety Code, Section 116275) providing drinking water to the dwelling or non-residential structure before allowing an exemp- tion from a construction permit.