Stanford University

327 Bonair Siding

Stanford, California   94305-7272

Phone: (650) 723-9747                               Fax: (650) 723-3191

Web: suwater.stanford.edu

 

Service Area

 

The Stanford Sustainability & Energy Management Department supplies water to the campus area and nearby Stanford unincorporated lands.

 

System

 

Profile

 

Area Size

3.1 square miles

Service Population

32,578*

Number of Accounts

n/a

Number of SF RWS Connections

3

Connections To SF RWS Mains

BDPL 3 and 4, 1 turnout off Palo Alto pipeline

Avg. Day Demand (mgd)

2.52

Avg. Day Purchases From SF RWS (mgd)

1.43

%  Demand Met With SF RWS Supplies

57% (100% of drinking water)

Average Day Local Water Production (mgd)

1.1

Alternative Supply Sources

Local groundwater, surface water, recycled water**

Interties With Other Agencies

Palo Alto

Local Storage (mg)

8

Days of Storage

2.5 to 4 - All 3 zones can meet the 8 hr criteria either separately or by pumping from zones with excess capacity. Wells can supply an additional 3.7 mgd in an emergency.

*Average daytime population is used for current and future projections.

** In FY-08-09, Stanford completed a recycled water plant that treats wastewater from the former Cogeneration Facility cooling tower blow-down for reuse for toilet and urinal flushing in new buildings. The plant was decommissioned in 2015 with the construction of the Stanford Energy System Innovations (SESI) Central Energy Facility. Source water for the recycled water system was lost but the infrastructure remains and can resume using recycled water once another source is established.

 

Summary

 

Stanford has four sources of water supply: purchased potable water from the SF RWS, groundwater, non-potable surface water from the local watershed, and recycled water.

 

SF RWS water is delivered through two turnouts off BDPL 3 and 4 and one turnout off the Palo Alto pipeline. There are four wells located on Stanford property that could be used in an emergency. Three of the wells are in compliance with all drinking water standards, while the fourth well is “standby”, since its manganese levels exceed current standards.

 

Stanford also has a non-potable (lake) water system that supplies more than 80% of its irrigation needs, significantly reducing Stanford’s use of potable water for irrigation. This system is typically supplied by Stanford’s surface water diversions, and supplemented by ground water. The extent of ground water use depends on the amount of rainfall and resulting surface water supply availability. The lake water system can also be supplied as needed by SF RWS water.

 

Water Supply and Demand

 

 

Supply by Source

Actual
FY 15-16
(ccf)

Actual
FY 16-17
(ccf)

Actual
FY 17-18
(ccf)

Actual
FY 18-19
(ccf)

San Francisco Water

679,394

695,088

725,276

697,159

Local Groundwater

300,686

198,507

241,503

0

Surface Water

93,476

254,967

256,275

0

Other

0

0

41,684

531,006

Total

1,073,556

1,148,562

1,264,738

1,228,165

mgd equivalent

2.20

2.35

2.59

2.52

 

 

 

 

 

Demand by Sector

 

 

 

 

Residential

347,058

353,241

377,819

380,398

Commercial/Industrial

87,498

66,036

67,986

63,374

Other

140,481

157,835

168,057

169,600

Dedicated Irrigation

442,795

498,566

593,838

572,128

Unaccounted for

55,724

72,884

57,039

42,667

Total

1,073,556

1,148,562

1,264,738

1,228,167

mgd equivalent

2.20

2.35

2.59

2.52

 

 

 

 

 

Per Capita Use

Actual
FY 15-16
(gpcpd)

Actual
FY 16-17
(gpcpd)

Actual
FY 17-18
(gpcpd)

Actual
FY 18-19
(gpcpd)

Residential

n/a

n/a

n/a

n/a

Gross

71

75

80

77.3

Note: Due to its unique service area, Stanford’s residential per capita numbers are excluded.

 

Facilities and Distribution

 

Storage Reservoirs

 

Wells

 

 

 

Interties

 

 

Designation

Type

Capacity (gallons)

 

Name

Capacity (gpm)

Status

 

Name

No.

Diameter
(in.)

Foothill 1

 

2,000,000

 

Well 1

500

Active

 

Roth Way

1

8

Foothill 2

 

6,000,000

 

Well 2

500

Active

 

Sandhill

1

8

Reservoir 3 (Formally San Juan*)

1,500,000

 

Well 3R

1200

Active

 

**Actual total well capacity will be less than total indicated.  Simultaneous pumping of wells will affect the individual well pumping rates.  Wells are periodically taken out of service for maintenance

Total

 

9,500,000

 

Well 4R

400

Inactive

 

*Rehabilitated reservoir was brought into service in November 2019.

 

Well 5

500

Standby

 

Total

3100**