Santa Clara Valley Water District System # 4310027
Report for: Penitencia, Rinconada, Santa Teresa Water Treatment Plants 
Start: 9/1/00 End: 9/30/00

Primary Standards - Mandatory Health-Related Standards
PWTP  PWTP  RWTP  RWTP  STWTP STWTP
Units MCL DLR Influent Treated Influent Treated Influent Treated
Aluminum (Al) mg/L 1 0.05 0.62 0.06 0.93 ND 0.19 0.07
Antimony (Sb) mg/L 0.006 0.006 ND ND ND ND ND ND
Arsenic (As) mg/L 0.05 0.002 ND ND 0.003 ND 0.002 ND
Asbestos MFL 7 MFL 0.2 NT NT NT NT NT NT
Barium (Ba) mg/L 1 0.1 ND ND ND ND ND ND
Beryllium (Be) mg/L 0.004 0.001 ND ND ND ND ND ND
Cadmium (Cd) mg/L 0.005 0.001 ND ND ND ND ND ND
Chromium (Cr) mg/L 0.05 0.01 ND ND ND ND ND ND
Cyanide (CN) mg/L 0.2 0.1 NT NT NT NT NT NT
Fluoride (F) mg/L 2 0.1 0.1 ND 0.1 ND 0.1 0.1
Lead (Pb) mg/L NS 0.005 ND ND ND ND ND ND
Mercury (Hg) mg/L 0.002 0.001 ND ND ND ND ND ND
Nickel (Ni) mg/L 0.1 0.01 ND ND ND ND ND ND
Nitrate (as NO3) mg/L 45 2 ND ND ND ND ND 2
Nitrite (as N) mg/L 1 0.4 ND ND ND ND ND ND
Selenium (Se) mg/L 0.05 0.005 ND ND ND ND ND ND
Thallium (Tl) mg/L 0.002 0.001 ND ND ND ND ND ND

 
Bromodichloromethane mg/L NS 0.0005 NT 0.0190 ND 0.0110 NT 0.0240
Bromoform mg/L NS 0.0005 NT 0.0020 ND 0.0040 NT 0.0050
Chloroform mg/L NS 0.0005 NT 0.0210 ND 0.0080 NT 0.0170
Dibromochloromethane mg/L NS 0.0005 NT 0.0110 ND 0.0100 NT 0.0200
Total Trihalomethanes mg/L 0.1 0.0005 NT 0.0530 ND 0.0330 NT 0.0660

 
Heterotrophic Plate Count CFU/ml <500 33178 90 23779 1 1373 33
Secondary Standards - Aesthetic Standards
PWTP  PWTP  RWTP  RWTP  STWTP STWTP
Units MCL DLR Influent Treated Influent Treated Influent Treated
Apparent Color Color Units 15 53 <2.5 40 <2.5 31 <2.5
Chloride (Cl) mg/L 250-500-600 36 40 46 48 57 58
Conductivity umhos/cm 900-1600-2200 330 359 389 431 406 430
Copper (Cu) mg/L 1 0.05 ND ND ND ND ND ND
Foaming Agents (MBAS) mg/L 0.5 NT NT NT NT NT NT
Iron (Fe) mg/L 0.3 0.1 0.5 ND 0.9 ND 1.1 ND
Manganese (Mn) mg/L 0.05 0.02 0.03 ND 0.06 ND 0.03 ND
pH (Units) pH units 6.5-8.5 8.3 7.8 8.1 7.6 7.8 7.6
Silver (Ag) mg/L 0.1 0.01 ND ND ND ND ND ND
Sulfate (as SO4) mg/L 250-500-1500 0.5 19.7 32.0 28.5 48.3 37.9 52.1
Total Dissolved Solids mg/L 500-1000-1500 223 227 239 253 276 299
Turbidity NTU 5.0 5.64 0.06 5.06 0.06 2.74 0.06
Zinc (Zn) mg/L 5 0.05 ND 0.40 ND 0.42 ND 0.42
Additional Constituents Analyzed
PWTP  PWTP  RWTP  RWTP  STWTP STWTP
Units MCL DLR Influent Treated Influent Treated Influent Treated
Total Alkalinity mg/L NS 88 80 85 82 84 82
Ammonia Nitrogen (NH3) mg/L NS ND 0.13 ND 0.10 ND 0.11
Bromide (Br) mg/L NS 0.08 ND 0.08 ND 0.10 ND
Calcium (Ca) mg/L NS 16 16 18 19 22 23
Chlorate (ClO3) mg/L NS NT 0.2 NT 0.2 NT 0.1
Hardness (as CaCO3) mg/L NS 95 94 98 99 103 105
Magnesium (Mg) mg/L NS 11 10 13 12 10 13
Phosphate (PO4) mg/L NS 0.16 0.78 0.18 0.93 0.16 0.89
Potassium (K) mg/L NS 1.6 1.5 1.8 1.8 1.9 2.3
Sodium (Na) mg/L NS 26 31 31 38 36 41
Temperature Degrees C NS 21 22 22 22 21 23
Total Organic Carbon mg/L NS 3.00 2.13 3.05 2.07 3.29 2.51
UV-254 ABS NS 0.113 0.037 0.092 0.028 0.097 0.042

MCL = Maximum Contaminant Level mg/L = milligrams per liter ND = Not Detected
DLR = Detection Limit for Reporting MFL = million fibers per liter NT = Not Tested
PWTP = Penitencia Water Treatment Plant CFU/ml = coliform forming units per milliliter NS = No Standard
RWTP = Rinconada Water Treatment Plant umhos/cm = microhms per centimeter
STWTP = Santa Teresa Water Treatment Plant NTU = nephelometric turbidity units
ABS = absorbance

Water District Laboratory Contact:
Jim Scott (408) 265-2607, extension 2119, or
jimscott@scvwd.dst.ca.us