43885 South Grimmer Boulevard
Fremont, California 94538-6348
Phone: (510) 668-4200 Fax: (510) 656-3426
Web: www.acwd.org
The Alameda County Water District (ACWD) service area includes the cities of Fremont, Newark, Union City, and southern portions of the City of Hayward. Currently, ACWD provides retail water service predominantly within the Cities of Fremont, Newark, and Union City, and a small number of parcels outside of ACWD’s service area through agreements.
|
Area Size |
104.8 sq. miles |
|
Service Population |
358,246 |
|
Number of Accounts |
87,859 |
|
Number of SF RWS Connections |
8 |
|
Connections To SF RWS Mains |
BDPL 1, 2, 3, 4 and 5 |
|
Avg. Day Demand (mgd) |
39.90 |
|
Avg. Day Purchases From SF RWS (mgd) |
9.40 |
|
% Demand Met With SF RWS Supplies |
23.55% |
|
Maximum Local Water Production (mgd) |
86.5 mgd (Source: ACWD Engineering Report 2011, and includes WTP2, Blending Facility, Desal, and Direct Takeoffs from SFPUC) |
|
Alternative Supply Sources |
SF RWS, State Water Project (SWP), Local Groundwater |
|
Interties With Other Agencies |
Milpitas, Hayward |
|
Local Storage (mg) |
85.0 maximum capacity - volume in storage is typically 60 to 80% based on seasonal operating conditions |
|
Days of Storage |
1.7 - based on maximum capacity storage and average daily demand |
ACWD currently has three primary sources of water supply: (1) the State Water Project (SWP), (2) San Francisco’s Regional Water System and (3) local supplies. The SWP and San Francisco Regional Water Supplies are imported into the District service area through the South Bay Aqueduct and Hetch-Hetchy Aqueduct, respectively. Local supplies include fresh groundwater from the Niles Cone Groundwater Basin (underlying the District service area), desalinated brackish groundwater from portions of the groundwater basin previously impacted by seawater intrusion, and surface water from the Del Valle Reservoir. The primary source of recharge for the Niles Cone Groundwater Basin is from percolation of runoff from the Alameda Creek watershed. To a lesser degree, a portion of ACWD’s SWP supplies are also used for local groundwater percolation. Infiltration of rainfall and applied water also contribute to local groundwater recharge.
Before being supplied to ACWD’s customers, the source water supplies are treated to meet and surpass all state and federal drinking water standards. ACWD is currently operating one surface water treatment plant that can treat SWP imports and local surface water from Del Valle Reservoir. The Newark Desalination Facility treats brackish groundwater to remove salts and other impurities, and the Blending Facility blends high quality San Francisco water with local fresh groundwater (with higher hardness) to provide a blended supply with lower overall hardness.
Over the FY 10/11 - 19/20 period, 37% of the District’s distribution system water supply was from the State Water Project. This water was either purified at one of ACWD’s two water treatment plants or used to recharge local aquifers. Water from the San Francisco Regional System provided approximately 21% of the distribution system water supply and local supplies from Del Valle Reservoir and groundwater (recharged from runoff from the Alameda Creek Watershed and infiltration of rainfall and applied water) accounted for the balance (about 42%) of the distribution system supplies.
|
Supply by Source |
Actual |
Actual |
Actual |
Actual |
|
San Francisco Water |
3,716,845 |
3,798,529 |
3,840,640 |
4,585,161 |
|
State Water Project |
6,675,349 |
6,030,448 |
5,546,495 |
7,336,376 |
|
Desalinated Water |
3,119,652 |
2,907,621 |
3,764,574 |
3,733,289 |
|
Local Groundwater |
3,647,727 |
3,347,726 |
3,427,942 |
3,583,690 |
|
Surface Water |
898,047 |
1,982,415 |
2,320,887 |
231,304 |
|
Recycled Water |
0 |
0 |
0 |
0 |
|
Other |
0 |
0 |
0 |
0 |
|
Total |
18,057,620 |
18,066,739 |
18,900,527 |
19,469,820 |
|
mgd equivalent |
37.01 |
37.02 |
38.73 |
39.90 |
|
|
||||
|
Demand by Sector |
|
|
|
|
|
Residential |
10,708,680 |
10,500,526 |
11,131,726 |
11,654,792 |
|
Commercial/Industrial |
3,152,692 |
3,067,959 |
3,013,144 |
3,055,890 |
|
Other |
683,279 |
683,769 |
548,262 |
501,310 |
|
Dedicated Irrigation |
2,018,205 |
1,909,035 |
2,358,131 |
2,478,129 |
|
Non-Revenue Water |
1,494,764 |
1,905,450 |
1,849,275 |
1,779,699 |
|
Total |
18,057,620 |
18,066,739 |
18,900,527 |
19,469,820 |
|
mgd equivalent |
37.01 |
37.02 |
38.73 |
39.90 |
|
|
|
|
|
|
|
Per Capita Use |
Actual |
Actual |
Actual |
Actual |
|
Residential |
62 |
60 | 64 |
67 |
|
Gross |
104 |
92 | 108 | 111 |
|
Designation |
Capacity (gallons) |
|
Designation |
Capacity (gallons) |
|---|---|---|---|---|
|
Alameda |
16,250,000 |
|
Mayhew |
4,300,000 |
|
Appian |
780,000 |
|
Middlefield |
7,230,000 |
|
Avalon |
2,750,000 |
|
Ohlone |
1,500,000 |
|
Canyon Heights |
510,000 |
|
Patterson |
14,210,000 |
|
Decoto |
14,550,000 |
|
Vineyard Heights |
540,000 |
|
Hidden Valley |
2,000,000 |
|
Whitfield |
20,400,000 |
|
Total |
84,970,000 |
|
|
|
|
ACWD Engineering Report, 2011. |
||||
|
Design ation |
Capacity (mgd) |
Status |
|
Designation |
Capacity (mgd) |
Status |
|---|---|---|---|---|---|---|
|
WTP #2 |
22 |
Active |
|
Mission San Jose WTP |
3.2 |
Inactive |
|
Blending Facility |
48 |
Active |
|
Newark Desalination Facility |
12.5 |
Active |
|
Total |
70 |
|
|
|
85.7 |
|
|
Name |
Capacity (mgd) |
Status |
|
Name |
Capacity (mgd) |
Status |
|---|---|---|---|---|---|---|
|
Mowry 1 |
1.4 |
Active |
|
PT 1 |
3.4 |
Active |
|
Mowry 2 |
3.2 |
Active |
|
PT 2 |
3.4 |
Active |
|
Mowry 3 |
3.2 |
Active |
|
PT 3 |
3.4 |
Active |
|
Mowry 4 |
3.0 |
Active |
|
PT 4 |
3.4 |
Active |
|
Mowry 6 |
3.3 |
Active |
|
PT 5 |
3.4 |
Active |
|
Mowry 7 |
3.3 |
Active |
|
PT 6 |
3.4 |
Active |
|
Mowry 8 |
3.0 |
Active |
|
PT 7 |
3.4 |
Active |
|
Mowry 9 |
3.3 |
Active |
|
PT 8 |
3.4 |
Inactive |
|
Total |
50.9 |
|
|
|
|
|
|
Name |
No. |
Diameter* |
|
Hayward |
1 |
12 |
|
Hayward |
2 |
** |
|
Milpitas |
1 |
8 |
|
Milpitas |
2 |
8 |
|
**Diameter of main connected **3.6 mgd connection to |
||
