Rancho Santa Margarita Recycled Watersystem Project


SCH Number
Lead Agency
Santa Margarita Water District
Document Title
Rancho Santa Margarita Recycled Watersystem Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
RL-6000, RL-5000, RM-3000-D, RM-2000-A, RH, OS, CN, CG, PQ, P/Residential, Business Park, Community Facility, Commercial Geneal, Open Space
Document Description
The project would entail construction and operation of Santa Margarita Water District (SMWD) infrastructure to extend its existing recycled water service within Rancho Santa Margarita and adjacent unincorporated County land. The project proposes installation of approximately 95,000 linear feet (approximately 18 miles) of 8-inch-, 12-inch-, 16-inch-, and 18 inch-diameter pipes. Most proposed pipelines would run parallel to existing SMWD potable water pipelines beneath existing City and County roads, consisting of Antonio Parkway, Avenida de las Banderas, Avenida Empresa, Santa Margarita Parkway, Avenida de las Flores, Melinda Road, Coto de Caza Drive, and smaller collector streets within residential and commercial developments. A new aboveground reservoir tank would be constructed to store recycled water for distribution flexibility. The new tank is proposed in an undeveloped area on property owned by SMWD north of Los Alisos Boulevard and adjacent to an existing SMWD tank and pipelines. A new pump station is proposed south of the Portola Reservoir on developed SMWD property. The existing Eastbrook Recycled Water Pump Station would be expanded to provide additional pumping capacity. Upon completion, the project would permanently convert an estimated approximately 4,000 acre-feet per year of residential and commercial irrigation demand from potable to recycled water.

Contact Information

Tricia Butler
Agency Name
Santa Margarita Water District
Job Title
Chief Engineer
Contact Types
Lead/Public Agency


Mission Viejo, Rancho Santa Margarita
Cross Streets
Avenida Empresa and Santa Margarita Parkway
Parcel #
Numerous APNs
State Highways
Portola Hills Elementary
Upper Oso Reservoir, Lake Mission Viejo
San Bern

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 12 (DOT), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Water Resources (DWR)
State Reviewing Agency Comments
California Department of Water Resources (DWR)
Development Types
Water Facilities (Pipelines, Reservoir Tank, Pump Stations, 4.5 MGD)(Type See Comment, MGD 9999)
Local Actions
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from State Reviewing Agency(ies)]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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