|
Table 6-5 How some southwestern
communities treat their drinking water. |
|
CITY |
SOURCE WATER |
DISINFECTION METHOD
Chlo
rine |
Chlor
amine | Other |
| Ozone |
Membrane |
|
|
SALINITY
REDUCTION |
|
CA
Anaheim |
All Colorado River |
no |
yes |
yes |
no |
hydrogen peroxide |
no |
|
Long Beach |
50 percent groundwater; 50 percent Colorado River
|
yes |
no |
yes |
no |
|
no |
|
Los Angeles |
Changing blend of Colorado River, State Water
Project, and groundwater |
yes |
no |
yes |
no |
|
no |
|
San Diego |
10-20 percent local rainfall & state water
project; 80-90 percent Colorado River |
|
|
|
|
|
no |
|
NV
Las Vegas (new) |
All Colorado River |
yes |
yes |
yes |
no |
|
no |
|
AZ
Buckeye |
All polluted groundwater |
yes |
no |
yes |
no |
35% water loss; salt disposal in irrigation
drainage canals |
electrodialysis desalting |
|
Glendale
(new) |
Salt River Project (SRP) water and CAP water
|
yes |
no |
no |
ultrafiltration |
pilot plant 1 mgd |
no |
|
Phoenix
Union Hills |
SRP water and CAP water |
yes |
no |
no |
no |
|
no |
|
Tempe
2 plants |
SRP water and CAP water |
yes |
no |
no |
no |
no |
no |
Note: Of the above plants, only the Buckeye plant does
not begin it water treatment with a basic filtration/flocculation
process. |