Millbrae, City of
Public Works - Engineering
621 Magnolia Avenue
Millbrae, California 94030
Phone: (650) 259-2339 Fax: (650) 697-8158
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 |
21,579 |
|
Number of Accounts |
6,769 |
|
Number of SF RWS Connections |
5 |
|
Connections To SF RWS Mains |
Murchison, Greenhills, Park, 195 ECR, Helen |
|
Avg. Day Demand (mgd) |
1.74 |
|
Avg. Day Purchases From SF RWS (mgd) |
1.74 |
|
% Demand Met With SF RWS Supplies |
100% |
|
Maximum Local Water Production (mgd) |
0 |
|
Alternative Supply Sources |
None |
|
Interties With Other Agencies |
Burlingame |
|
Local Storage (mg) |
2.36 |
|
Days of Storage |
2.0 - 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 |
Actual |
Actual |
Actual |
|
San Francisco Water |
927,939 |
906,122 |
900,514 |
850,047 |
|
Local Groundwater |
0 |
0 |
0 |
0 |
|
Surface Water |
0 |
0 |
0 |
0 |
|
Recycled Water |
12,000 |
0 |
0 |
0 |
|
Other |
0 |
0 |
0 |
0 |
|
Total |
939,939 |
906,122 |
900,514 |
850,047 |
|
mgd equivalent |
1.93 |
1.86 |
1.85 |
1.74 |
|
|
|
|
|
|
|
Demand by Sector |
|
|
|
|
|
Residential |
603,740 |
625,079 |
552,391 |
530,140 |
|
Commercial/Industrial |
146,136 |
66,540 |
70,805 |
142,691 |
|
Other |
27,096 |
61,427 |
18,731 |
19,564 |
|
Dedicated Irrigation |
69,292 |
78,444 |
67,232 |
65,013 |
|
Non-Revenue Water |
93,675 |
74,632 |
191,514 |
92,639 |
|
Total |
939,939 |
906,122 |
900,514 |
850,047 |
|
mgd equivalent |
1.93 |
1.86 |
1.85 |
1.74 |
|
|
||||
|
Per Capita Use |
Actual |
Actual |
Actual |
Actual |
|
Residential |
54 |
56 |
51 |
53 |
|
Gross (less recycled water) |
83 |
81 |
83 |
84 |
Facilities and Distribution
Storage Reservoirs
Interties
|
Designation |
Type |
Capacity (mg) |
|
Name |
No. |
Diameter |
|---|---|---|---|---|---|---|
|
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 |
|
|
|
|