California Water Service - Mid-Peninsula District
341 North Delaware Street
San Mateo, California 94401-1727
Phone: (650) 558-7800 Fax: (650) 342-6865
Web: calwater.com
Service Area
California Water Service’s Mid-Peninsula District is located in central San Mateo County and serves the communities of San Carlos, San Mateo, parts of unincorporated Redwood City, and adjacent unincorporated portions of San Mateo County, including The Highlands and Palomar Park.
System
Profile
|
Area Size |
17 square miles |
|
Service Population |
137,660 |
|
Number of Accounts |
35,897 |
|
Number of SF RWS Connections |
8 |
|
Connections To SF RWS Mains |
Bay Crossing 1and 2, BDPL 1 and 2, Crystal Springs #2, Sunset Pipeline |
|
Avg. Day Demand (mgd) |
11.32 |
|
Avg. Day Purchases From SF RWS (mgd) |
11.32 |
|
% Demand Met With SF RWS Supplies |
100% |
|
Maximum Local Water Production (mgd) |
0 |
|
Alternative Supply Sources |
None |
|
Interties With Other Agencies |
Mid-Peninsula WD, Redwood City, Belmont, Burlingame, Hillsborough, and Estero MID |
|
Local Storage (mg) |
19.9 |
|
Days of Storage |
1.44 - All zones can meet the 8 hr criteria either separately or by pumping from zones with excess capacity. |
Summary
The Mid-Peninsula District receives all of its water from the SF RWS. Water is delivered to the San Carlos area via 3 SF RWS turnouts located off BDPL 1 and 2. San Mateo is supplied from 5 turnouts located off the Crystal Springs Pipeline #2 and Sunset Supply Lines. The distribution system includes 22 pressure zones in San Carlos, 18 in San Mateo, 62 booster pumps, 38 storage tanks, 2,832 hydrants, and 363 miles of main.
Water Supply and Demand
|
Supply by Source |
Actual |
Actual |
Actual |
Actual |
|
San Francisco Water |
6,292,879 |
6,336,593 |
6,074,256 |
5,525,097 |
|
Local Groundwater |
0 |
0 |
0 |
0 |
|
Surface Water |
0 |
0 |
0 |
0 |
|
Recycled Water |
0 |
0 |
0 |
0 |
|
Other |
0 |
0 |
0 |
0 |
|
Total |
6,292,879 |
6,336,593 |
6,074,256 |
5,525,097 |
|
mgd equivalent |
12.90 |
12.99 |
12.45 |
11.32 |
|
|
|
|
|
|
|
Demand by Sector |
|
|
|
|
|
Residential |
4,361,377 |
4,490,547 |
4,075,560 |
3,684,229 |
|
Commercial/Industrial |
1,169,019 |
1,063,339 |
1,057,248 |
1,015,289 |
|
Other |
382,057 |
345,231 |
337,275 |
334,645 |
|
Unaccounted for |
380,426 |
237,164 |
604,256 |
490,940 |
|
Total |
6,292,879 |
6,336,593 |
6,074,256 |
5,525,097 |
|
mgd equivalent |
12.90 |
12.99 |
12.45 |
11.32 |
|
|
|
|
|
|
|
Per Capita Use |
Actual |
Actual |
Actual |
Actual |
|
Residential |
62 |
67 |
61 |
55 |
|
Gross |
94 |
94 |
91 |
82 |
Facilities and Distribution
Storage Reservoirs
|
Designation |
Type |
Capacity (gallons) |
|
Designation |
Type |
Capacity (gallons) |
|---|---|---|---|---|---|---|
|
San Mateo |
|
|
|
San Mateo |
|
|
|
Sta. 006-Res. 1 |
Brick |
2,290,000 |
|
Sta. 027-Tank 1 |
Steel |
2,500,000 |
|
Sta. 017-Tank 1 |
Steel |
500,000 |
|
Sta. 027-Tank 2 |
Steel |
2,500,000 |
|
Sta. 017-Tank 2 |
Steel |
500,000 |
|
Sta. 029-Tank 1 |
Steel |
1,000,000 |
|
Sta. 017-Tank 3 |
Steel |
500,000 |
|
Sta. 030-Tank 1 |
Steel |
500,000 |
|
Sta. 023-Tank 1 |
Steel |
1,000,000 |
|
Sta. 031-Tank 1 |
Steel |
216,000 |
|
Sta. 024-Tank 1 |
Steel |
500,000 |
|
Sta. 032-Tank 1 |
Steel |
250,000 |
|
Sta. 024-Tank 2 |
Steel |
500,000 |
|
Sta. 032-Tank 2 |
Steel |
500,000 |
|
Sta. 025-Tank 1 |
Fiberglass-Lined Redwood |
100,000 |
|
Sta. 033-Tank 1 |
Steel |
300,000 |
|
Sta. 025-Tank 2 |
Steel |
250,000 |
|
Sta. 033-Tank 2 |
Steel |
500,000 |
|
Sta. 025-Tank 3 |
Steel |
250,000 |
|
|
|
|
|
Total |
|
|
|
|
|
14,656,000 |
Storage Reservoirs
|
Designation |
Type |
Capacity (gallons) |
|
Designation |
Type |
Capacity (gallons) |
|---|---|---|---|---|---|---|
|
San Carlos |
|
|
|
San Carlos |
|
|
|
Sta. 103-Tank 1 |
Concrete |
0 |
|
Sta. 118-Tank 1 |
Steel |
200,000 |
|
Sta. 106-Tank 2 |
Steel |
0 |
|
Sta. 118-Tank 2 |
Steel |
750,000 |
|
Sta. 106-Tank 3 |
Steel |
500,000 |
|
Sta. 119-Tank 1 |
Steel |
400,000 |
|
Sta. 109-Tank 1 |
Concrete |
50,000 |
|
Sta. 120-Tank 1 |
Steel |
500,000 |
|
Sta. 109-Tank 2 |
Steel |
250,000 |
|
Sta. 122-Tank 1 |
Fiberglass-Lined Redwood |
0 |
|
Sta. 112-Tank 1 |
Steel |
200,000 |
|
Sta. 122-Tank 2 |
Fiberglass-Lined Redwood |
0 |
|
Sta. 112-Tank 2 |
Steel |
500,000 |
|
Sta. 123-Tank 3 |
Steel |
250,000 |
|
Sta. 112-Tank 3 |
Steel |
700,000 |
|
Sta. 123-Tank 4 |
Steel |
425,000 |
|
Sta. 115-Tank 1 |
Steel |
250,000 |
|
Sta. 124-Tank 1 |
Steel |
78,000 |
|
Sta. 116-Tank 2 |
Fiberglass-Lined Redwood |
100,000 |
|
Sta. 125-Tank 1 |
Fiberglass-Lined Redwood |
50,000 |
|
Sta. 116-Tank 3 |
Fiberglass-Lined Redwood |
100,000 |
|
|
|
|
|
San Carlos Total |
|
|
|
|
|
5,303,000 |
|
San Mateo and San Carlos Total |
|
19,959,000 |
||||
Interties
|
Name |
No. |
Diameter (in.) |
|
Name |
No. |
Diameter (in.) |
|
San Carlos |
|
|
|
San Mateo |
|
|
|
Redwood City |
3 |
8, 8, 12 |
|
Burlingame |
3 |
4, 4, 6 |
|
Mid-Peninsula WD |
3 |
8, 8, 8 |
|
Hillsborough WD |
2 |
6, 6, 6 |
|
|
|
|
|
Mid-Peninsula WD |
2 |
6, 6, 6 |
|
|
|
|
|
Estero MID |
1 |
12 |