Zone 7 by 6GRR8e58

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									(a) Zone 7 strives to Abbreviations/Units: DLR = Detection Limit for Purposes of Reporting (DHS established). NA = Not Applica

DISTRIBUTION SYSTEM                          Highest running annual average
Total trihalomethanes (TTHMs), ug/L                   37
Haloacetic acids (HAAs), ug/L                         17
Total coliform bacteria                      Range of individual samples
Chloramines Residual, mg/L as Chlorine       0.9-63
WATER SUPPLY SOURCES                         ND–43
CONTAMINANT                                  Highest percentage of monthly positive samples
Turbidity                                           0%
Total Organic Carbon (mg/L)                  Running Annual Average (RAA)
Inorganic Chemicals                                  1.8
Barium (ug/L)                                Range of Monthly Average Chloramines
Chromium total (ug/L)                        1.4–2.1
Selenium (ug/L)                              Del Valle
Fluoride (mg/L)                              Water Treatment Plant
Nitrate (as NO3) (mg/L)                      Highest Level Found = 0.22 NTU
Radionuclides                                Lowest % of samples ≤ 0.3 NTU
Gross Alpha (pCi/L)                                 100
Gross Beta (pCi/L)                           Lowest Quarterly RAA Ratio = 1.7
Uranium (pCi/L)                              Patterson Pass
Corrosivity (Units)                          Water Treatment Plant
Conductivity (umhos/cm)                      Highest Level Found = 0.20 NTU
Chloride (mg/L)                              Lowest % of samples ≤ 0.3 NTU
Sulfate (mg/L)                                      100
Total Dissolved Solids (mg/L)                Lowest Quarterly RAA Ratio = 1.4
Boron (ug/L)                                 Average
Vanadium (ug/L)                              ND
Alkalinity (as CaCO3) (mg/L)                 ND
Hardness total (as CaCO3) (mg/L)             ND
Calcium (mg/L)                                       0.1
Magnesium (mg/L)                                     2.1
Potassium (mg/L)                             ND
Sodium (mg/L)                                ND
pH (Units)                                   ND
Silica (mg/L)                                      11.9
Total Radon (pCi/L)                                 405
MCL                                                   72
         80                                           25
         60                                         239
5% of monthly samples                               100
are positive                                 ND
Maximum Residual Disinfectant Level                   71
(MRDL) = 4.0                                          88
MCL                                                   19
TT = 1 NTU                                            10
TT = 95% of                                            2
samples <0.3 NTU                                      50
TT = Quarterly RAA Removal                           8.5
Ratio ≥ 1.0                                           14
      1000                                   NA
         50                                  Range
        50          ND
         2          ND
        45          ND
        15          0.1–0.1
        50          ND–5.3
        20          ND
Non-corrosive (a)   ND
     1600           ND
      500           11.6 - 12.4
      500           361–455
     1000           52–105
AL = 1000           14–40
AL = 50             198–282
–                   ND–220
–                   ND
–                   62–76
–                   70–104
–                   15–24
–                   7–11
–                   1.3–2.9
–                   36–71
–                   8.2–8.8
DLR                 6–18
       0.5          NA
         1          Mocho Wellfield
       0.3          Average
      100                  0.15
        10          Stoneridge Well
         5          Hopyard Wellfield
       0.1          Average
         2                  210
         3          ND
         4          ND
         2                   0.1
       0.5                    20
      100           ND
         3          ND
      100           ND
PHG                        12.3
MCLG*                       903
MRDLG**                       93
NA                            70
NA                          572
0*                          560
4**                            3
PHG                         300
MCLG*                       391
NA                            85
NA                            43
NA                           2.1
     2000                     62
100*                         7.7
50*                                      27
       1                                250
      45                          Range
NA                                140–340
NA                                ND-10
     0.43                         ND-6
–                                 0.1–0.1
–                                 13–29
–                                 ND–3
–                                 ND–12
–                                 ND
–                                 12.1 - 12.6
–                                 705–1142
–                                 63–132
–                                 56–87
–                                 482–752
–                                 280–920
–                                 ND–5
–                                 264–355
–                                 300–512
–                                 71–104
–                                 28–65
                                  1.6–2.5
Running REGULATED CONTAMINANTS WITH UNREGULATED CONTAMINANTS REQUIRING Additional Parameters — In
                                  40-86
                                  7.4–7.9
                                  21–30
                                  200-290
                                  Average
                                          230
                                            10
                                  ND
                                           0.1
                                            18
                                  ND
                                  ND
                                  ND
                                         12.2
                                          633
                                            47
                                            37
                                          398
                                          340
                                             5
                                          236
                                          261
                                            48
                                            24
                                           1.7
                                            41
                                           7.8
                                            29
                                          290
Range
0.06–0.49
Average
       0.07
Range
0.05–0.09
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Range
220–270
ND–14
ND
0.1–0.1
16–20
ND
ND-6
ND
12.1 - 12.4
550–690
40–59
32–44
370–448
260–430
4 –6
222–253
233–297
42–74
23–35
1.6-1.8
33–45
7.5–8.0
27–33
280–300
Average
       0.13
Range
0.06–0.46
Range
110–210
ND-10
ND–6
0.1–0.2
10–16
ND
ND
ND–3
12.0 - 12.4
758–859
48–78
44–74
422–520
300–560
ND–5
256–304
293–361
68–84
30–41
1.5–1.9
30–73
7.3–7.9
21–27
160–320
Average
        150
ND
ND
         0.1
          13
ND
ND
ND
       12.2
        757
          59
          58
        476
        410
           3
        287
        331
          75
          35
         1.7
          51
         7.6
          25
        260
WITH SECONDARY MCLs, established by the State of California Department of
REQUIRING MONITORING, established by the State of California Department o
assist consumers in making health or economic decisions, i.e., low-sodium diet,
CONTAMINANTS WITH PRIMARY MCLs, established by the State of California
WATER
(DHS established). NA = Not Applicable.
 he State of California Department of Health Services
 the State of California Department of Health Services
 mic decisions, i.e., low-sodium diet, water softening, etc.
established by the State of California Department of Health Services

								
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