Mid-Peninsula Water District
Three Dairy Lane
Belmont, California 94002-0129
Phone: (650) 591-8941 Fax: (650) 591-4998
Service Area
The Mid-Peninsula Water District, located in central San Mateo County, serves the city of Belmont, portions of San Carlos, and unincorporated county areas. The predominant land use is residential.
System
Profile
|
Area Size |
5 square miles |
|
Service Population |
29,709 |
|
Number of Accounts |
8,187 |
|
Number of SF RWS Connections |
2 |
|
Connections To SF RWS Mains |
BDPL 1 and 2, Crystal Springs Bypass Tunnel |
|
Avg. Day Demand (mgd) |
2.40 |
|
Avg. Day Purchases From SF RWS (mgd) |
2.40 |
|
% Demand Met With SF RWS Supplies |
100.0% |
|
Maximum Local Water Production (mgd) |
0 |
|
Alternative Supply Sources |
None |
|
Interties With Other Agencies |
Estero MID, Redwood City, CWS - San Mateo, CWS - San Carlos |
|
Local Storage (mg) |
12.5 |
|
Days of Storage |
3.6 - All zones can meet the 8 hr criteria either separately or by pumping from zones with excess capacity. |
Summary
The District’s sole source of potable water is delivered via two SF RWS turnouts. Local water storage is not feasible, and groundwater of adequate quantity and quality is not available.
The system contains 9 pressure zones. The easternmost zone, east of El Camino Real, is gravity fed from the SF RWS connection. Water is pumped to storage reservoirs at higher elevations to feed the remaining pressure zones. The District operates and maintains a complex distribution system that includes 20 pumps, 11 water tanks, 13 regulating valves, 813 hydrants, and 105 miles of water mains.
The District also has redundancy built into the entire distribution system, enabling either of the two SF RWS transmission mains to supply water to all customers of the District. The District has the ability to transfer water between pressure zones in either a pump-up or flow-down mode in emergency conditions.
Water Supply and Demand
|
Supply by Source |
Actual |
Actual |
Actual |
Actual |
|
San Francisco Water |
1,220,573 |
1,295,922 |
1,273.998 |
1,172,923 |
|
Local Groundwater |
0 |
0 |
0 |
0 |
|
Surface Water |
0 |
0 |
0 |
0 |
|
Recycled Water |
0 |
0 |
0 |
0 |
|
Other |
0 |
0 |
0 |
0 |
|
Total |
1,220,573 |
1,295,922 |
1,273.998 |
1,172,923 |
|
mgd equivalent |
2.50 |
2.66 |
2.61 |
2.40 |
|
|
|
|
|
|
|
Demand by Sector |
|
|
|
|
|
Residential |
818,122 |
916,630 |
953,609 |
836,837 |
|
Commercial/Industrial |
214,662 |
195,733 |
166,362 |
158,757 |
|
Other |
35,620 |
38,161 |
34,506 |
33,109 |
|
Dedicated Irrigation |
79,886 |
102,741 |
93,605 |
85,783 |
|
Non-Revenue Water |
72,283 |
42,657 |
25,916 |
58,437 |
|
Total |
1,220,573 |
1,295,922 |
1,273,998 |
1,172,923 |
|
mgd equivalent |
2.50 |
2.66 |
2.61 |
2.40 |
|
|
|
|
|
|
|
Per Capita Use |
Actual |
Actual |
Actual |
Actual |
|
Residential |
62 |
70 |
71 |
58 |
|
Gross |
87 |
98 |
95 |
95 |
Facilities and Distribution
Storage Reservoirs
|
Designation |
Type |
Capacity (mg) |
|
Designation |
Type |
Capacity (mg) |
|---|---|---|---|---|---|---|
|
Storage Tank 1 |
Steel |
2.50 |
|
Storage Tank 7 |
Steel |
0.79 |
|
Storage Tank 2 |
Steel |
2.50 |
|
Storage Tank 8 |
Steel |
0.79 |
|
Storage Tank 3 |
Steel |
1.00 |
|
Storage Tank 9 |
Steel |
0.10 |
|
Storage Tank 4 |
Steel |
1.50 |
|
Storage Tank 10 |
Steel |
0.10 |
|
Storage Tank 5 |
Steel |
1.00 |
|
Storage Tank 11 |
Steel |
1.50 |
|
Storage Tank 6 |
Steel |
0.72 |
|
|
|
|
|
|
|
|
|
Total |
|
12.50 |
Interties
|
Name |
No. |
Diameter |
|
Name |
No. |
Diameter |
|
Estero |
1 |
12 |
|
CWS - San Carlos |
2 |
8 |
|
Redwood City |
1 |
12 |
|
CWS - San Mateo |
3 |
8 |