Mercury Work Group
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For more information, contact David Eppstein by email at
deppstein@masco.harvard.edu, or by calling 617-632-2860.

Table 2 - Typical Wastewater Composition by Facility Type

    Facility Type
    Clinical Laboratory Research Laboratory Incinerator Scrubber Hospital Laundry
Analyte Units No. of Samples Min Max Avg No. of Samples Min Max Avg No. of Samples Min Max Avg No. of Samples Min Max Avg
Mercury                                  
Total Mercury ug/L 5 15 36 22 6 3 20 8 6 48 97 69 6 4 44 21
Dissolved Mercury ug/L 5 14 35 21 6 1 18 7 6 5 95 59 5 1 10 6
                                   
                                   
Heavy Metals                                  
Antimony ug/L N.A. - - - N.A.       3 25 37 29 3 25 25 25
Dissolved Antimony ug/L N.A. - - - N.A.       3 25 26 25 3 25 25 25
Arsenic ug/L N.A. - - - 3 25 26 26 N.A. - - - 3 25 25 25
Dissolved Arsenic ug/L N.A. - - - 3 25 27 26 N.A. - - - 3 25 25 25
Beryllium ug/L N.A. - - - N.A.       N.A. - - - 3 1 1 1
Dissolved Beryllium ug/L N.A. - - - N.A.       N.A. - - - 3 1 1 1
Boron ug/L 4 3,270 20,900 9,567 3 1,010 1,330 1,143 3 300 300 300 3 300 300 300
Dissolved Boron ug/L 4 2,360 21,900 9,406 3 999 1,580 1,193 3 300 607 444 3 300 300 300
Cadmium ug/L N.A. - - - 3 2 3 2 N.A. - - - 3 2 2 2
Dissolved Cadmium ug/L N.A. - - - 3 2 3 3 N.A. - - - 3 2 2 2
Chromium ug/L 3 6 25 16 3 2 3 2 3 2 5 4 3 2 4 2
Dissolved Chromium ug/L 3 2 18 12 3 2 3 3 3 2 2 2 3 2 2 2
Hexavalent Chromium ug/L N.A. - - - N.A.       N.A. - - - 3 11 11 11
Copper ug/L 3 428 729 546 3 160 166 162 3 12 16 15 3 72 158 105
Dissolved Copper ug/L 3 386 725 526 3 115 167 147 3 5 13 10 3 56 76 67
Lead ug/L 3 12 19 16 3 12 23 16 3 15 20 17 3 16 145 61
Dissolved Lead ug/L 3 12 19 17 3 10 18 13 3 3 13 8 3 5 21 10
Molybdenum ug/L N.A. - - - 3 7 13 9 N.A. - - - 3 7 7 7
Dissolved Molybdenum ug/L N.A. - - - 3 7 16 10 N.A. - - - 3 7 7 11
Nickel ug/L 3 9 26 15 3 3 9 7 3 6 12 9 3 3 14 7
Dissolved Nickel ug/L 3 6 21 13 3 3 7 4 3 3 8 5 3 3 5 4
Selenium ug/L N.A. - - - N.A.       N.A. - - - 3 30 30 30
Dissolved Selenium ug/L N.A. - - - N.A.       N.A. - - - 3 30 30 30
Silver ug/L 3 22 87 57 3 72 329 194 N.A. - - - 3 1 1 1
Dissolved Silver ug/L 3 16 84 51 3 34 267 105 N.A. - - - 3 1 1 1
Thallium ug/L N.A. - - - N.A.       3 35 37 36 3 35 35 35
Dissolved Thallium ug/L N.A. - - - N.A.       4 2 7 3 3 2 2 2
Zinc ug/L 3 52 105 75 3 30 48 37 3 16 22 20 3 32 172 80
Dissolved Zinc ug/L 3 54 114 76 3 34 42 38 3 16 24 19 3 25 50 37
Analyte Units No. of Samples Min Max Avg No. of Samples Min Max Avg No. of Samples Min Max Avg No. of Samples Min Max Avg
                                   
Organics                                  
Acetone ug/L N.A. - - - 3 39.2 81 58.5 3 5 10 6.7 3 5.73 65 26.8
M.P.-Xylene ug/L 8 5 14000 3400 4 10.6 136 53.5 N.A. - - - 3 5 6 5.3
Chloroform ug/L 8 5 131 54.4 4 10.4 460 215.8 3 5 8.6 6.5 3 2 17.9 11.9
O-Xylene ug/L 8 5 3910 906 3 3.74 69.1 25.9 N.A. - - - 2 5 5 5
Ethylbenzene ug/L 8 5 3200 736 3 2 28.3 11 N.A. - - - N.A. - - -
Bromodichloromethane ug/L N.A. - - - N.A.       N.A. - - - 3 1.17 10 4.12
Bromofluorobenzene(s) ug/L N.A. - - - N.A.       N.A. - - - 2 90 96 93
Styrene ug/L N.A. - - - N.A.       N.A. - - - 3 5 10 6.7
Tetrachloroethene ug/L N.A. - - - N.A.       N.A. - - - 3 2 5 4
Toluene ug/L N.A. - - - N.A.       N.A. - - - 3 1 5 3.7
                                   
Indicator Parameters                                  
Alkalinity mg/L 3 162 340 247 3 33 51 42 3 40 89 61 3 48 108 81
Ammonia mg/L 3 4 12 7 3 2 8 5 N.A. - - - 3 2 2 2
BOD mg/L 3 3,780 4,300 4,080 2 104 476 290 3 2 20 13 3 27 55 44
COD mg/L 3 7,550 23,500 13,143 3 188 737 381 3 43 62 52 3 99 220 142
Fats, Oil, and Grease mg/L 3 16 48 27 N.A.       N.A. - - - 3 7 13 9
Flow GPD 6 120 120 120 6 34,000 34,000 34,000 6 5,000 5,000 5,000 6 10,000 10,000 10,000
Petroleum Hydrocarbon mg/L 3 0 2 1 3 0 0 0 3 0 2 1 3 0 2 1
pH s.u. 6 7 9 8 6 4 9 8 6 5 9 7 6 7 10 8
TDS mg/L 3 1,810 5,560 3,393 3 190 278 243 3 1,640 2,190 1,950 3 156 364 279
Temperature Deg C 6 15 25 22 6 18 25 23 6 22 40 32 6 23 29 25
TSS mg/L 3 10 28 16 3 6 10 8 3 1 1 1 3 10 34 21
                                   
Others                                  
Cyanide mg/L 3 0.01 0.34 0.12 N.A.       N.A. - - - 3 0.01 0.036 0.022
Formaldehyde mg/L 4 7.63 93.2 43.1 3 1.5 3.1 2.3 3 0.1 0.27 0.16 3 0.1 0.32 0.17
MBAS mg/L 3 0.038 3.3 1.12 3 0.1 0.84 0.43 3 0.0758 0.125 0.097 3 0.63 0.69 0.65
Orthophosphorus mg/L 3 46.6 84.8 66.1 3 0.25 0.89 0.48 N.A. - - - 3 1.7 2.3 2.1
Phosphorus ug/L 3 41700 85900 69600 3 595 1200 813 N.A. - - - 3 5130 13200 10077
Sulfate mg/L 3 15.8 28 22.6 3 13.8 18.7 16.7 3 22 24.2 22.9 3 7.79 8.38 8.04
Sulfide mg/L 3 1 1.5 1.2 3 1 1.82 1.53 3 1 2.62 1.54 3 1 1.16 1.05
Total Chlorine Residual mg/L 1 0.31 0.31 0.31 N.A.       3 0.02 0.05 0.03 N.A. - - -

Notes:

  • ug/L micrograms per liter, parts per billion

  • N.A. Not Analyzed

  • mg/l milligrams per liter, parts per million

  • s.u. Standard Units

  • GDP Gallons per Day

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08/16/2006

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