Inorganic Compounds
Year Constituent Average Minimum Maximum MCL MCLG Unit of Measure Sources
2001 - 2003 Arsenic 3.2 3 3.4 50 0 ppb Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics production wastes.
2001-2003 Barium 0.248 .23 .266 2 2 ppb Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.
2000-2003 Fluoride .25 .2 .3 4 4 ppm Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.
2001 Sodium 40.6 40.6 40.6 NA NA ppm Erosion of natural deposits; By-product of oil field activity.
2000-2003 Gross alpha adjusted 2.8 2.5 3.1 15 0 pci/l Erosion of natural deposits.
2003 Combined Radium 226 & 228 0.6 0.6 0.6 5 0 pci/l Erosion of natural deposits.
2000-2003 Gross beta emitters 4.65 4.6 5 50 0 pci/l Decay of natural and manmade deposits.
Organic Contaminants

None Tested
 
Maximum Residual Disinfectant Level
Year Contaminant Average Level Minimum Level Maximum Level MCL MCLG Unit of Measure Source of Contaminant
2004 Chlorine 1.1 0.3 1.8 4 4 ppm Disinfectant used to control microbes.
Disinfection Byproducts

Not tested or reported, or none detected
Unregulated Contaminants

Not tested or reported, or none detected
Lead and Copper
Year Range Contaminant 90th Percentile Number of Sites Exceeding Action Level Action Level Unit of Measure Source of Contaminant
2001 - 2001 Lead 0.09000 0 15 ppb Corrosion of plumbing systems; erosion of natural deposits.
2001 - 2001 Copper 0.0460 0 1.3 ppm Corrosion of plumbing systems; erosion of natural deposits; leaching from wood preservatives.
Turbidity

Not Required
Total Coliform
Year Contaminant Highest Monthly Number of Positive Samples

 

 MCL Unit of Measure Source of Contaminant
2004 Total Coliform Bacteria 1 Two or more coliform found samples in any single month. Presence Naturally present in the environment.
Fecal Coliform

Not Detected
Secondary and Other Not Regulated Constituents (No associated adverse health effects.)
Year Range Constituent Average Level Minimum Level Maximum Level Limit Unit of Measure Source of Contaminant
2003-2003 Bicarbonate 320.000 320 320 NA ppm Corrosion of carbonate rocks such as limestone.
2003-2003 Calcium 72.700 72.7 72.7 NA ppm Abundant naturally occurring element.
2003-2003 Chloride 40.000 40 40 300 ppm Abundant naturally occurring element; used in water purfication; byproduct of oil field activity.
2003-2003 Iron 0.160 0.162 0.162 0.3 ppm Erosion of natural deposits; iron or steel water delivery equipment or facilities.
2003-2003 Magnesium 13.500 13.5 13.5 NA ppm Abundant naturally occurring element.
2003-2003 Manganese 19.200 19.2 19.2 50 ppm Abundant naturally occurring element.
2003-2003 Nickel 1.100 1.1 1.1 NA ppm Erosion of natural deposits.
2003-2003 Ph 7.2 7.2 7.2 NA units Measure of corrosivity of water.
2003-2003 Sodium 43.300 43.3 43.3 NA ppm Erosion of natural deposits; byproduct of oil field activity.
2003-2003 Sulfate 13.000 13.0 13.0 300 ppm Naturally occurring; common industrial byproduct; byproduct of oil field activity.
2003-2003 Total Alkalinity as CaCO3 262.000 262 262 NA ppm Naturally occurring soluable mineral salts.
2003-2003 Total Dissolved Solids 356.000 356 356 1000 ppm Total dissolved mineral constituents in water.
2003-2003 Total Hardness as CaCO3 237.000 237 237 NA ppm Naturally occurring calcium.