Question

1. microbiological contamination often causes flu - like symptoms; however, it can also cause serious diseases. which of the following is not a water borne disease?

a. hepatitis
b. aids
c. giardiasis
d. legionnaire’s disease

1. the revised total coliform rule establishes an mclg and an mcl for e. coli and eliminates the mclg and mcl for total coliforms, replacing them with treatment techniques for coliforms that require assessment and corrective action. epa has established an mclg of ______ for e. coli, which is a more specific indicator of fecal contamination than those pathogens that are potentially more harmful than total coliform.

a. zero
b. one
c. three
d. depends on the number of samples that are taken each month by the water purveyor

Explanation:

For question 7: Water-borne diseases spread via contaminated water. Hepatitis (specifically Hepatitis A/E), Giardiasis, and Legionnaire's Disease can be transmitted through contaminated water. AIDS is transmitted via bodily fluids, not water.
For question 8: The EPA's Maximum Contaminant Level Goal (MCLG) for E. coli in drinking water is zero, as E. coli indicates fecal contamination and no safe level is established.

Answer:

1. b. AIDS
2. a. zero