Historical analyses from Prairie Creek near Plano Road (Table 4.3.1) and from the class groups (Table 4.3.1) are available for comparison. For conversion: ppm mg/l for low-salinity water; low-salinity water at 26 contains 8.1 mg/l dissolved oxygen at saturation; at 15 saturated D.O content is 10.1 mg/l. See also online bottled water analyses and City of Dallas tapwater analyses .
Component | Units | March | April | May | June | July | August |
Conductivity | 600 | 420 | 510 | 500 | 460 | 480 | |
pH | 8.1 | 8.2 | 8.3 | 7.8 | 8.3 | 8.4 | |
Turbidity | NTU | 3.11 | 3.45 | 2.08 | 2.37 | 2.78 | 1.97 |
D.O. | mg/l | 16.8 | 10.9 | 5.4 | 13.9 | 7.2 | 6.2 |
Nitrate | ppm | 1.82 | 1.21 | 0.95 | 0.7 | 0.34 | 0.14 |
Water Temp. | F | 64 | 58 | 75 | 80 | 88 | 82 |
Group | ||||
Component | Units | A | B | C |
Conductivity | 264.8 | 4564.1 | 234.0 | |
pH | 8.21 | 8.17 | 8.07 | |
Turbidity | NTU | 1.49 | 1.63 | 2.97 |
D.O. | % sat | 45.2, 50.1 | 52 | 39 |
Nitrate | ppm | 1.7 | 1.9 | 2.0 |
Water Temp. | 27.2 | 27.2 | 26.7 | |
Salinity | ppt | 0.2 |
Parameter | Hardness | Alkalinity | Turbidity | Salinity | pH |
Units | ppm | ppm | NTU | ppm | - |
City of Dallas water | 98 | 53 | 0.3 | 180 | |
Private Swimming Pool | 1000 | 180 | 0.4 | 1200 | 7.07 |
Compare water quality parameters for the various samples taken by the class. If multiple samples were analyzed from one source, discuss any variability in results and potential sources of error. Pay particular attention to differences that might be attributable to environment, i.e. the potential role of the wetlands.