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

133,679

Number of Accounts

35,763

Number of SF RWS Connections

6

Connections To SF RWS Mains

Bay Crossing 1and 2, BDPL 1 and 2, Crystal Springs #2, Sunset Pipeline

Avg. Day Demand (mgd)

10.91

Avg. Day Purchases From SF RWS (mgd)

10.91

%  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
FY 12-13
(ccf)

Actual
FY 13-14
(ccf)

Actual
FY 14-15
(ccf)

Actual
FY 15-16
(ccf)

San Francisco Water

6,046,107

6,956,723

6,016,058

5,325,284

Local Groundwater

0

0

0

0

Surface Water

0

0

0

0

Recycled Water

0

0

0

0

Other

0

0

0

0

Total

6,046,107

6,956,723

6,016,058

5,325,284

mgd equivalent

12.39

 14.26

12.33

10.91

 

 

 

 

 

Demand by Sector

 

 

 

 

Residential

4,922,016

4,843,897

4,153,923

3,523,247

Commercial/Industrial

1,274,219

1,295,186

1,195,269

1,080,215

Other

401,387

442,095

374,940

324,881

Unaccounted for

-551,515

375,545

291,926

396,941

Total

6,046,107

6,956,723

6,016,058

5,325,284

mgd equivalent

12.39

 14.26

12.33

10.91

 

 

 

 

 

Per Capita Use

Actual
FY 12-13
(gpcpd)

Actual
FY 13-14
(gpcpd)

Actual
FY 14-15
(gpcpd)

Actual
FY 15-16
(gpcpd)

Residential

79

77

64

54

Gross

97

110

92

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