Concentrations greater than 1000 colony forming units(cfu) Escherichia coli per 100 mL and greater than 400 cfu intestinal enterococci per 100mL increase the probability of acquiring gastrointestinal health complaints. Regression analyses showed that the endotoxin concentration in air was significantly influenced by the concentration of endotoxin in water, the distance to the water feature and the tangibility of water spray. Exposure to air and water near water features was shown to lead to exposure to endotoxins and fecal bacteria.