1501.2 System Design. Alternate water source systems

shall be designed in accordance with this chapter by a registered design professional or licensed person who demonstrates competency to design the alternate water source system as required by the Authority Having Jurisdiction. Components, piping, and fittings used in an alternate water source system shall be listed.

[BSC-CG & HCD 1] Irrigation design plans shall meet the requirements of the California Code of Regulations, Title 23, Division 2, Chapter 2.7, Model Water Efficient Landscape Ordinance. Exceptions: (1) A registered design professional is not required to design

gray water systems having a maximum discharge capac

(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

(1) Service areas in which the only reclaimed (recy-

cled) water is used for potable purposes, or in which net nonpotable deliveries are anticipated to remain level or decrease as a result of the potable reuse project. (2) Where access to disinfected tertiary recycled

water is not feasible and/or cost-efficient, as

<

(2) Where access to disinfected tertiary recycled

water is not feasible and/or cost-efficient, as determined by the Authority Having Jurisdic- tion in consultation with the recycled water pur- veyor. Note: A city, county, or city and county, in con- sultation with the recycled water purveyor, may further reduce the area for the mandate to install recycled water supply systems if the recy- cled water purveyor is unable to accommodate new services or unable to provide uninterrupt- able service. (3) A potable water supply system is not required

for landscape irrigation if the landscape irri-

(3) A potable water supply system is not required

for landscape irrigation if the landscape irri- gation system is supplied with recycled water at the time of final inspection. (4) Potable water may be used with the recycled

water supply system on a temporary basis, as

Potable water may be used with the recycled

water supply system on a temporary basis, as allowed by the Authority Having Jurisdiction in consultation with the recycled water purveyor.

(2) A registered design professional is not required to design

an on-site treated nonpotable water system for singlefamily dwellings having a maximum discharge capacity of 250 gal/d (0.011 L/s).