Texas Source-Water Susceptibility Assessment - Results Maps

The results maps show a summary of the monitoring data that was available for model development (on top) and the results of a logistic regression model that estimates the probability that the specified contaminant will occur in surface water at a concentration that is equal to or greater than the TCEQ-specified threshold value (on bottom). Logistic regression models are developed for 100 percent (3 of 3) of nutrients, 95 percent (18 of 19) of metals, 75 percent (9 of 12) of major ions, 67 percent (2 of 3) of physical conditions, 32 percent (20 of 63) of pesticides, 20 percent (1 of 5) microbiologicals, 10 percent (1 of 10) of radionuclides, 8 percent (9 of 109) organics, and 0 percent (0 of 3) inorganics.