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

 40,000

Number of Accounts

12,526

Number of SF RWS Connections

1

Connections To SF RWS Mains

San Andreas 3

Avg. Day Demand (mgd)

2.40

Avg. Day Purchases From SF RWS (mgd)

2.40

%  Demand Met With SF RWS Supplies

100%

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)

23.35

Days of Storage

7.12 - 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 14-15
(ccf)

Actual
FY 15-16
(ccf)

Actual
FY 16-17
(ccf)

Actual
FY 17-18
(ccf)

San Francisco Water

1,360,780

900,293

1,089,419

1,169,151

Westborough CWD (SF RWS)

0

0

0

0

Recycled Water

4,120

13,788

15,787

0

Other

0

0

0

0

Total

1,364,900

914,081

1,105,206

1,169,151

mgd equivalent

2.80

1.87

2.26

2.40

 

 

 

 

 

Demand by Sector

 

 

 

 

Residential

911,508

828,122

813,927

856,462

Commercial/Industrial

99,795

91,672

91,672

100,196

Other

62,064

47,161

56,333

68,359

Dedicated Irrigation

24,484

22,785

23,205

58,424

Unaccounted for

267,049

-75,659

120,069

85,710

Total

1,364,900

914,081

1,105,206

1,169,151

mgd equivalent

2.80

1.87

2.26

2.40

 

 

 

 

 

Per Capita Use

Actual
FY 14-15
(gpcpd)

Actual
FY 15-16
(gpcpd)

Actual
FY 16-17
(gpcpd)

Actual
FY 17-18
(gpcpd)

Residential

47

42

42

44

Gross

70

46

56

60

 

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