Westborough County Water District

2263 Westborough Boulevard

South San Francisco, California 94080-5406

Phone: (650) 589-1435                               Fax: (650) 589-5167

Web: westboroughwater.com

 

Service Area

 

The Westborough Water District is located within the City of South San Francisco in north San Mateo County. The District provides both water and sewer service, and has an agreement with the North San Mateo County Sanitation District for sewage disposal and facility maintenance.

 

System

 

Profile

 

Area Size

1 square mile

Service Population

 12,703

Number of Accounts

3,887

Number of SF RWS Connections

1

Connections To SF RWS Mains

San Andreas 1, 2, and 3

Avg. Day Demand (mgd)

0.82

Avg. Day Purchases From SF RWS (mgd)

 0.82

%  Demand Met With SF RWS Supplies

100.0%

Maximum Local Water Production (mgd)

0

Alternative Supply Sources

None

Interties With Other Agencies

North Coast CWD, Daly City

Local Storage (mg)

6.5

Days of Storage

6.5 - All zones can meet the required 8 hr. coverage. During emergencies, District also has access to an additional 3.5 mg in storage owned by North Coast WD.

 

Summary

 

The Westborough Water District receives its entire water supply from the San Francisco Public Utilities Commission through a single 6” turnout located on Westborough Boulevard. This water is distributed to 3 Skyline storage tanks located at the north end of the district, from which the Skyline Pump Station pumps water to the Christen Hill Reservoir for gravity distribution to Zone 3, and the Main Water Pump Station pumps water to Zones 1 and 2.

 

The Christen Hill Reservoir is shared with the North Coast County Water District.

 

The WCWD distribution system includes 3 storage tanks, 2 pumping stations, 5 pumps, and 24 miles of mains. In addition to the Christen Hill Reservoir intertie with NCCWD, the district has an intertie with Daly City.

 

Water Supply and Demand

 

Supply by Source

Actual
FY 16-17
(ccf)

Actual
FY 17-18
(ccf)

Actual
FY 18-19
(ccf)

Actual
FY 19-20
(ccf)

San Francisco Water

356,722

383,996

379,833

400,616

Local Groundwater

0

0

0

0

Surface Water

0

0

0

0

Recycled Water

0

0

0

0

Other

0

0

0

0

Total

356,722

383,996

379,833

400,616

mgd equivalent

0.73

0.79

0.78

0.82

 

 

 

 

 

Demand by Sector

 

 

 

 

Residential

284,986

293,705

281,152

293,470

Commercial/Industrial

26,058

27,315

34,958

33,950

Other

0

0

0

0

Dedicated Irrigation

22,214

40,529

39,384

36,286

Non-Revenue Water

23,464

22,447

24,339

36,910

Total

356,722

383,996

379,833

400,616

mgd equivalent

0.73

0.79

0.78

0.82

 

 

 

 

 

Per Capita Use

Actual
FY 16-17
(gpcpd)

Actual
FY 17-18
(gpcpd)

Actual
FY 18-19
(gpcpd)

Actual
FY 19-20
(gpcpd)

Residential

42

47

45

47

Gross

52

62

57

65

 

Facilities and Distribution

Storage Reservoirs

 

Designation

Type

Capacity (mg)

SS Tank 1

Steel

1.5

SS Tank 2

Steel

2.5

SS Tank 3

Steel

2.0

CH Reservoir

Steel

0.5

Total

 

6.5

 

Interties

 

Name

No.

Diameter
(in.)

North Coast

1

8

Daly City

1

12