North Coast County Water District

2400 Francisco Boulevard
Pacifica, California  94044-6039

Phone: (650) 355-3462                               Fax: (650) 355-0735

Web: nccwd.com

 

Service Area

 

The North Coast County Water District serves the northern coastal areas of San Mateo County. The District’s boundaries are nearly the same as those of the City of Pacifica.

 

System

 

Profile

 

Area Size

13.6 square miles

Service Population

 37,082

Number of Accounts

13,170

Number of SF RWS Connections

1

Connections To SF RWS Mains

San Andreas 3

Avg. Day Demand (mgd)

2.13

Avg. Day Purchases From SF RWS (mgd)

2.10

%  Demand Met With SF RWS Supplies

98.45%

Maximum Local Water Production (mgd)

0

Alternative Supply Sources

Local Surface Water

Interties With Other Agencies

San Bruno, Daly City, Westborough CWD

Local Storage (mg)

18.25

Days of Storage

5.8 days - Length of storage based on loss of all sources of supply. All zones can meet the 8 hr criteria either separately or by pumping from zones with excess capacity. San Pedro Creek could meet limited demand in an emergency.

 

Summary

 

100% of NCCWD water comes from one SF RWS connection at San Andreas. There is
a main pump station located on the site of the Harry Tracy WTP, which pumps all the water through a 4 mile pipeline into the Milagra Ridge storage tank located in the Central District area.

 

The northern portion of the system is supplied by pumping water from the Milagra Ridge Tank site to the Christian Hill tank, then distributing it to the customers via gravity. The southern District’s distribution hub, at Royce Tank Site, is supplied via gravity by the Milagra Ridge Tank. Overall, the system is divided into 34 pressure zones, each separated by pressure reducing valves. At average daily demands, there is enough storage to supply the District with water for up to 7.2 days at typical demands and storage. A small amount of water is conveyed to San Bruno annually as a public customer.

 

The District's only other water source is the San Pedro Creek. Water rights to the creek are limited to 500 gpm between December 1 and April 30, and to 210 gpm during May. This water requires filtering and minimal treatment at the San Pedro WTP adjacent to the creek before distribution. The San Pedro facility is on line and filters creek water, as allowed by the District’s water rights, for non-potable uses.

 

Water Supply and Demand

 

Supply by Source

Actual
FY 19-20
(ccf)

Actual
FY 20-21
(ccf)

Actual
FY 21-22
(ccf)

Actual
FY 22-23
(ccf)

San Francisco Water

1,157,526

1,172,219

1,068,893

1,024,588

Westborough CWD (SF RWS)

0

0

0

0

Recycled Water

28,510

22,198

15,744

16,151

Other

0

0

0

0

Total

1,186,036

1,194,417

1,084,637

1,040,739

mgd equivalent

2.43

2.45

2.22

2.13

 

 

 

 

 

Demand by Sector

 

 

 

 

Residential

856,032

915,799

806,906

784,583

Commercial/Industrial

95,952

82,724

90,075

89,498

Other

54,608

56,475

75,292

65,419

Dedicated Irrigation

55,668

51,256

52,299

41,900

Non-Revenue Water

123,776

88,163

60,065

59,339

Total

1,186,036

1,194,417

1,084,637

1,040,739

mgd equivalent

2.43

2.45

2.22

2.13

 

 

 

 

 

Per Capita Use

Actual
FY 19-20
(gpcpd)

Actual
FY 20-21
(gpcpd)

Actual
FY 21-22
(gpcpd)

Actual
FY 22-23
(gpcpd)

Residential

45

49

44

43

Gross

62

63

58

57

 

Facilities and Distribution

Potable Storage Reservoirs

 

Designation

Capacity (gallons)

13 Reservoirs

23,550,000

Total

23,550,000

 

Water Treatment Facilities:

 

Surface Water                      

 

Recycled Water

 

Designation

Capacity (mgd)

 

Designation

Capacity (mgd)

San Pedro WTP

0.5

 

Central District

0.3

 

Interties

 

Name

No.

Diameter
(in.)

 

Name

No.

Diameter
(in.)

San Bruno

2

10

 

Westborough

3

8, 10, 10

Daly City

2

6, 8