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	38,331
Number of Accounts	12,281
Number of SF RWS Connections	1
Connections To SF RWS Mains	San Andreas 3
Avg. Day Demand (mgd)	2.45
Avg. Day Purchases From SF RWS (mgd)	2.40
%  Demand Met With SF RWS Supplies	98%
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 17-18 (ccf)	Actual FY 18-19 (ccf)	Actual FY 19-20 (ccf)	Actual FY 20-21 (ccf)
San Francisco Water	1,169,151	1,119,762	1,157,526	1,172,219
Westborough CWD (SF RWS)	0	0	0	0
Recycled Water	0	22,277	28,510	22,198
Other	0	0	0	0
Total	1,169,151	1,142,039	1,186,036	1,194,417
mgd equivalent	2.40	2.34	2.43	2.45
Demand by Sector
Residential	856,462	826,999	856,032	915,799
Commercial/Industrial	100,196	93,884	95,952	82,724
Other	68,359	58,796	54,608	56,475
Dedicated Irrigation	58,424	28,819	55,668	51,256
Non-Revenue Water	85,710	133,541	123,776	88,163
Total	1,169,151	1,142,039	1,186,036	1,194,417
mgd equivalent	2.40	2.34	2.43	2.45
Per Capita Use	Actual FY 17-18 (gpcpd)	Actual FY 18-19 (gpcpd)	Actual FY 19-20 (gpcpd)	Actual FY 20-21 (gpcpd)
Residential	44	42	45	49
Gross	60	53	62	63

 

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