Water Quality Guidelines

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28-Jun 6-Mar 23-Apr 20-Apr 17-May 22-May 26-May 11-May Units CDWG *2000 *2001 *2002 *2003 *2004 *2005 *2006 *2007 *2008 *2009 Total Ammonia (N) mg/L Color-Apparent CU ≤15 AO 15 3 2 2 5 <5 <5 8 <5 <5 Conductivity uS MAC 291 137 128 175 159 163.1 148.3 163.7 151 157.9 TDS mg/L 500 AO 211 87 53 53 93 53 93 86 104 116 Hardness (CaCO3) mg/L 80-100 AO 88 55.3 55.2 58.4 64 68 58 73 53 67 pH pH units 6.5-8.5 AO 7.35 6.8 6.39 6.8 6.8 6.7 6.8 6.7 6.96 7 Turbidity NTU's 5 AO 1.1 <.05 0.43 0.06 0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Alkalinity mg/L 151 47 47 23 53 59 53 53 49 48 Chloride mg/L 250 AO 12.5 7.3 6.41 7.58 7.9 9.3 6.8 10.5 8.5 12.9 Fluoride mg/L 1.5 MAC 0.12 <.04 0.07 <0.01 <1 <1.0 <0.1 <1.0 <1.0 <1.0 Sulfate mg/L ≤500 AO 0.5 3.97 4.08 4.86 17.4 6.4 7.3 8.1 6.1 4.8 Nitrate (N) mg/L 10 MAC 0.33 0.459 0.46 0.52 0.6 0.6 0.54 0.4 0.6 0.8 Nitrite (N) mg/L 1 MAC 0.068 <.002 <.006 <0.01 <0.1 <0.1 <0.01 <0.1 <0.1 <0.1 T-Aluminum mg/L 0.100 OG 0.031 <.009 <0.005 <0.005 <0.005 <0.005 <0.01 <0.05 <0.005 T-Antimony mg/L 0.006 MAC <.006 <.006 <0.0002 <0.0002 <0.0002 <0.0002 <0.0004 <0.001 <0.0002 T-Arsenic mg/L 0.010 MAC 0.001 <.01 <.01 <0.0002 <0.0002 0.0002 <0.0002 <0.0004 <0.001 <0.0002 T-Barium mg/L 1.0 MAC 0.005 0.0448 0.0004 0.002 0.002 0.002 0.002 <0.002 <0.005 0.002 T-Beryllium mg/L T-Boron mg/L 5.0 MAC 0.1 0.021 0.02 0.022 0.02 0.022 0.016 0.022 <0.02 0.049 T-Bismuth mg/L T-Cadmium mg/L 0.005 MAC <.0006 <.0006 <0.00001 <0.00001 <0.00001 <0.00001 <0.00002 <0.0003 <0.00001 T-Calcium mg/L 18 16.7 18.8 21 21.7 18.9 23.5 17.1 21.5 T-Chromium mg/L 0.05 MAC <.0009 <.0009 <0.0005 <0.0005 <0.0005 <0.0005 <0.001 <0.003 <0.0004 T-Cobalt mg/L T-Copper mg/L ≤1 AO 0.016 0.014 0.013 0.014 0.013 0.011 0.01 0.02 0.017 T-Iron mg/L ≤0.3 AO 0.17 0.031 0.109 <0.1 <.01 <0.1 <0.1 <0.2 0.06 <0.01 T-Lead mg/L 0.010 MAC <.002 0.003 0.0003 0.0002 0.0003 0.0002 0.0004 <0.0005 0.0003 T-Lithium mg/L <0.001 T-Magnesium mg/L AO 9.24 2.53 3.29 2.8 3 3.4 2.7 3.4 2.6 3.24 T-Manganese mg/L ≤0.05 AO 0.11 0.0006 0.0018 <0.005 <0.005 <0.005 <0.005 <0.005 0.002 0.0005 T-Mercury mg/L 0.001 MAC <.0001 <.0001 <0.0002 <0.0002 <0.0002 <0.0001 <0.02 <0.01 <0.01 T-Molybdenum mg/L T-Nickel mg/L <0.001 T-Phosphorus mg/L <0.01 T-Potassium mg/L <.4 <.4 <0.4 <0.4 <0.4 <0.4 <0.8 0.3 0.4 T-Selenium mg/L 0.01 MAC 0.007 <.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0004 <0.003 <0.0006 T-Silicon mg/L T-Silver mg/L <0.00001 T-Sodium mg/L ≤200 AO 3.6 4.4 4.4 4.5 5.3 5.5 6.6 6.5 6.57 T-Strontium mg/L T-Thallium mg/L T-Tin mg/L T-Titanium mg/L T-Uranium mg/L 0.02 MAC <.06 <.02 <0.0005 <0.0005 <0.0005 <0.0005 <0.001 <0.002 <0.0004 T-Vanadium mg/L T-Zinc mg/L ≤5 AO 0.009 0.009 0.0211 0.004 0.003 0.003 0.004 0.027 <0.005 0.007