match coloumn a to coloumn b coloumn a coloumn b 11. Safe drinking water is totally free from chemicals. 12. Total bacteria present in water samples from water vending machines is determined using an...

11. Safe drinking water is totally free from chemicals.
12. Total bacteria present in water samples from water vending machines is
determined using an enzyme-substrate test.

13. All water samples from the La Trinidad water district must report <1.1>
per 100 mL total coliform to comply with DOH standards. FALSE All water samples
from the La Trinidad water district must report <1.1 mpn="" per="" 100="">
thermotolerant coliform to comply with DOH standards.
14. Baguio ice plant and cold storage samples must be tested with the presence
of total bacteria, total coliform, and thermotolerant coliform once a month.
15. A water sample that contains beyond the maximum acceptable level of
total coliform must be retested.

a. true

b. false