Which of these represents the maximum contaminant level (MCL) for coliforms in finished water?

Which of these is NOT a surrogate measure used to determine the efficiency of waste water treatment methods?

Regulations governing bottled water include all of the following, except:

The major opposition for using chlorine to purify water was

Increased water sports can lead to an increase in the release of fuel and other chemicals in the waterways.

Contamination of fresh water line by Vibrio cholera when an oil rig was being towed introduced the organism into the drinking water in the Gulf Coast outbreak.

A person has a very high fever and is delirious.  They are ranting and raving, and throwing themselves about on the bed in fits.  To which of these theories of disease would these symptoms have been attributed in the 17th century?

Before steps for flocculation and sedimentation are used, water is filtered

The Boonton Reservoir was chlorinated in September 1908.

How was water quality determined in early civilizations?