Millbrae, City of

Public Works - Engineering

621 Magnolia Avenue

Millbrae, California  94030

Phone: (650) 259-2339                               Fax: (650) 697-8158

Website

 

Service Area

 

The City of Millbrae is a residential community with a small commercial business sector located in north San Mateo County. Millbrae owns and operates its water utility, with a service area that includes Capuchino High School in San Bruno.

 

System

 

Profile

 

Area Size

3.2 square miles

Service Population

 22,848

Number of Accounts

6,555

Number of SF RWS Connections

5

Connections To SF RWS Mains

Murchison, Greenhills, Park, 195 ECR, Helen

Avg. Day Demand (mgd)

1.91

Avg. Day Purchases From SF RWS (mgd)

 1.88

%  Demand Met With SF RWS Supplies

99%

Maximum Local Water Production (mgd)

0

Alternative Supply Sources

None

Interties With Other Agencies

Burlingame

Local Storage (mg)

2.36

Days of Storage

0.8 - 3 of 4 (Zones 1- 3) zones receive water from Harry Tracy Plant. Meets 8 hr. coverage for City’s 3 upper zones. Planned projects will provide interties among zones to provide storage to Zone 4. These projects are pending completion of a Master Plan.

 

Summary

 

The City of Millbrae’s only source of water is the SF RWS, delivered through 5 turnouts. Hetch Hetchy water purchased from the SF RWS meets all drinking water standards and is treated with fluoride.

 

Four storage tanks near the Harry Tracy WTP are filled early in the morning and are slowly drawn throughout the day to satisfy customer demand. Water filtered by the Harry Tracy Treatment Plant (San Andreas Reservoir) supplies water in the higher elevations, while the Crystal Springs #2 and #3 deliver water to the lower elevations.

 

The distribution system includes 11 pressure zones, 6 pumps (3 each at 2 stations), 5 storage tanks (only 4 are in operation), 568 hydrants, and 69.7 miles of water mains.

 

Water Supply and Demand

 

Supply by Source

Actual
FY 13-14
(ccf)

Actual
FY 14-15
(ccf)

Actual
FY 15-16
(ccf)

Actual
FY 16-17
(ccf)

San Francisco Water

1,134,741

991,049

899,785

918,695

Local Groundwater

0

0

0

0

Surface Water

0

0

0

0

Recycled Water

12,000

12,000

0

12,000

Other

0

0

0

0

Total

1,146,741

1,003,049

899,785

930,695

mgd equivalent

2.35

2.06

1.84

1.91

 

 

 

 

 

Demand by Sector

 

 

 

 

Residential

731,183

627,450

542,393

570,181

Commercial/Industrial

154,759

161,459

162,215

158,303

Other

65,130

71,796

28,293

29,353

Dedicated Irrigation

84,344

72,645

47,125

52,420

Unaccounted for

111,325

69,699

119,759

120,438

Total

1,146,741

1,003,049

899,785

930,695

mgd equivalent

2.35

2.06

1.84

1.91

 

Per Capita Use

Actual
FY 13-14
(gpcpd)

Actual
FY 14-15
(gpcpd)

Actual
FY 15-16
(gpcpd)

Actual
FY 16-17
(gpcpd)

Residential

70

60

49

51

Gross (less recycled water)

108

94

81

82

 

Facilities and Distribution

 

Storage Reservoirs                       

 

Interties

 

Designation

Type

Capacity (mg)

 

Name

No.

Diameter
(in.)

Storage Tank 1

Steel

1.00

 

Burlingame

8

6, 8, 10, 12

Storage Tank 2

Steel

0.50

 

 

 

 

Storage Tank 3

Steel

0.50

 

 

 

 

Storage Tank 4

Steel

0.11

 

 

 

 

Storage Tank 5

Steel

0.25

 

 

 

 

Total

 

2.36