Water Quality Data
Detected Regulated CCR Parameters with Secondary MCLs
Primary standards (MCLs) are developed for the purpose of protecting the public from possible health risks associated with long-term exposure to contaminants. In general, no health hazard is reasonably expected to occur when levels are below a primary MCL. Secondary standards (Secondary MCLs) are set to protect the odor, taste, and appearance of drinking water. If present at or above the secondary MCL, these parameters may cause the water to appear cloudy or colored, or to taste or smell bad. These parameters are not considered to present a risk to human health at or above Secondary MCL levels. All of our results from 2013 are below secondary MCLS.
| UNITS | CA SMCL | CSD MDL (DLR) | CITY OF SAN DIEGO TREATMENT PLANTS | MWD SKINNER TREATMENT PLANT | MAJOR SOURCES IN DRINKING WATER | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ALVARADO | MIRAMAR | OTAY | ||||||||||
| AVERAGE | RANGE | AVERAGE | RANGE | AVERAGE | RANGE | AVERAGE | RANGE | |||||
| Chloride | ppm | 500 | 0.5 | 86.9 | 79.9 - 96.7 | 85.3 | 77.4 - 90.7 | 133 | 116- 152 | 84 | 83 - 86 | Runoff/leaching from natural deposits; seawater influence |
| Color | CU | 15 | 1 | 1 | ND - 4 | ND | ND - 2 | 1 | ND - 2 | 2 | 1 - 2 | Naturally occurring organic materials |
| Manganese | ppb | 50 | (20) | ND | ND - 33.5 | ND | ND - ND | ND | ND - ND | ND | ND | Leaching from natural deposits |
| Odor - Threshold | OU | 3 | 1 | ND | ND - 1 | ND | ND - 1.4 | 1 | 1 - 1.4 | 2 | 2 | Naturally occurring organic materials |
|
Specific Conductance |
µS/cm | 1,600 | n/a | 730 | 471 - 860 | 723 | 465 - 860 | 894 | 789 -1070 | 850 | 830 - 870 | Substances that form ions when in water; seawater influence |
| Sulfate | ppm | 500 | (0.5) | 133 | 72.9 - 187 | 154 | 71.0 - 188 | 129 | 103 - 158 | 170 | 170 - 180 | Runoff/leaching from natural deposits; industrial wastes |
|
Total Dissolved Solids |
ppm | 1000 | 10 | 466 | 337 - 580 | 477 | 337 - 570 | 564 | 533 - 659 | 510 | 500 - 520 | Runoff/leaching from natural deposits |