Water: Year: | TAP 2024
Plant Name: Lake Huron (LH)
Yearly Summary Monthly Mineral Analyses Annual Averages
WATER OPERATING SERVICES WATER QUALITY 10100 EAST JEFFERSON AVENUE DETROIT, MICHIGAN 48214 PHONE: 313-926-8102 / 313-926-8127
Parameter Units Max. Min. Avg. 01/16/2024 02/13/2024 03/12/2024 04/16/2024 05/14/2024 06/11/2024 07/09/2024 08/13/2024 09/10/2024 10/08/2024 11/05/2024 12/10/2024 Sample Dates
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec MCL Sec.Std RL STDEV
Turbidity N.T.U. 0.10 0.04 0.07 0.04 0.09 0.06 0.04 0.05 0.07 0.09 0.10 0.09 0.09 0.06 0.04 0.3/95% (1) 0.02
Total Solids mg/L 156 89 125 128 89 121 122 144 139 144 117 156 94 113 133 500 10 20
Total Dissolved Solids mg/L 140 92 113 105 95 122 99 126 92 140 124 115 116 116 105 500 10 14
Aluminum mg/L 0.084 0.022 0.043 0.024 0.026 0.022 0.024 0.027 0.039 0.072 0.060 0.084 0.073 0.044 0.023 0.05-0.2 0.001 0.023
Iron mg/L 0.3 0.2 0.2 0.2 0.2 0.3 0.2 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.1 0.047
Copper mg/L 0.005 ND 0.001 < 0.001 < 0.001 0.002 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.005 0.001 1.3 (AL) 0.001 0.002
Magnesium mg/L 8.0 7.4 7.6 7.5 7.4 7.5 7.8 7.7 7.9 7.6 7.5 7.7 7.6 7.5 8.0 0.1 0.19
Calcium mg/L 27.9 23.3 26.2 25.5 23.3 26.0 27.2 26.5 27.3 26.2 25.8 26.9 25.9 25.6 27.9 0.1 1.2
Sodium mg/L 5.3 0.5 4.3 4.3 5.1 5.3 0.5 5.1 5.3 5.2 5.2 5.0 4.9 0.5 5.2 20 (2) 1.79
Potassium mg/L 1.1 1.0 1.0 1.0 1.0 1.0 1.1 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 0.1 0.03
Manganese mg/L 0.001 ND 0.000 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.001 <0.001 0.05 0.001
Lead mg/L ND ND 0.000 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 0.015 (AL) 0.001
Zinc mg/L 0.010 ND 0.003 0.002 0.003 0.003 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.002 0.005 5 0.001 0.00
Silica mg/L 2.4 1.9 2.2 2.2 2.3 2.2 2.3 2.3 2.4 1.9 2.1 2.0 2.1 2.0 2.3 0.4 0.2
Sulfate mg/L 32.8 18.1 21.4 20.3 20.6 18.9 32.8 18.8 18.1 19.9 20.7 23.0 23.9 21.5 18.8 4.0
Chloride mg/L 11.0 9.0 9.9 10.0 9.0 11.0 9.0 11.0 10.5 9.7 10.2 10.0 9.7 9.8 9.1 250 5 0.7
Phosphorus mg/L 0.68 0.37 0.48 0.37 0.49 0.55 0.43 0.41 0.45 0.42 0.42 0.41 0.55 0.54 0.68 0.05 0.09
Free Carbon Dioxide mg/L 7.8 4.6 6.2 6.0 6.6 7.8 4.6 6.6 6.2 6.5 4.8 6.2 4.7 7.4 7.2 1.1
Total Hardness (3), (4), (5) mg/L 106 88 99 104 106 102 104 106 100 88 90 102 88 104 98 7
Total Alkalinity (3) mg/L 82 74 77 76 76 78 74 80 80 82 76 78 74 74 74 3
Carbonate Alkalinity (3) mg/L 6 0 0 0 0 0 6 0 0 0 0 0 0 0 0 2
Bi-Carbonate Alkalinity (3) mg/L 82 63 76 76 76 78 63 80 80 82 76 78 74 74 74 5
Non-Carbonate Hardness (3) mg/L 30 6 23 28 30 24 30 26 20 6 14 24 14 30 24 8
Chemical Oxygen Demand mg/L 8.7 2.0 4.4 2.1 4.1 3.8 5.3 6.5 8.7 7.5 2.0 2.8 2.1 3.6 4.7 2 2.2
Dissolved Oxygen mg/L 12.9 8.3 10.3 10.5 12.7 12.9 12.0 10.2 10.0 9.6 8.3 8.4 8.9 9.3 11.0 1.6
Nitrite Nitrogen mg/L ND ND 0.0 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 1 0.1
Nitrate Nitrogen mg/L 0.40 0.20 0.28 0.34 0.35 0.33 0.40 0.32 0.35 0.27 0.20 0.21 0.20 0.20 0.23 10 10 0.1 0.07
Fluoride mg/L 0.80 0.51 0.72 0.73 0.80 0.74 0.51 0.74 0.79 0.80 0.78 0.75 0.69 0.71 0.60 4 0.5 0.09
pH 7.50 7.30 7.39 7.40 7.36 7.30 7.44 7.39 7.41 7.40 7.50 7.40 7.50 7.30 7.31 6.5-8.5 6.5-8.5 0.07
Specific Conductance @25 °C. μm/hos 222 135 189 183 190 183 222 205 196 163 135 210 201 205 180 23
Temperature °C 22.8 8.9 16.1 9.6 9.5 8.9 12.4 14.5 17.2 21.6 22.8 22.4 21.0 18.9 14.8 5.3
Legend Notes:
MCL: Maximum Contaminant Level Sec.Std: Secondary Standard NTU: Nephelometric Turbidity Unit mg/L: Milligram Per Liter (ppm) AL: Action Level RL: Reporting Limit < : Less than AE: Analytical Error IN: Invalid Sample (1) Turbidity must not exceed 0.3 NTU in 95% of daily samples in any month (2) EPA Guidance Level (3) As Calcium Carbonate (4) By Titration (5) Tap Water Hardness in Grains per Gallon multiply value by 0.058 (Grains/Gallon)/(mg/L) --> (6) Reported results are below the low calibration standard but above the instrument detection limit. NA = Not available ND = Not detected above the reporting limit Maximum Minimum Average
6.1 5.1 5.8 GPG