The lower strata being colder than the upper strata.
The upper strata becoming denser and sinking to the bottom.
The upper and lower strata reaching the same temperature.
Decaying organic matter causing a gaseous movement.
Sodium and potassium
Nitrogen and sulfur
Fluoride and oxygen
Calcium and magnesium
A free chlorine residual greater then 1.0 MG/L
Water that tends to be corrosive.
Extremely high total solids contact.
Causes pipes to corrode
Increases trihalomethanes (THMs)
Stains plumbing and clothes.
A pressure reducer.
A platform scale.
0.05 Parts per million.
0.5 Parts per million.
1 parts per million.
5.0 parts per million.
Have no effect
Colorless, flammable, heavier than air
Greenish-yellow, nonflammable, lighter than air.
Greenish-yellow, flammable, lighter than air.
Greenish-yellow, nonflammable, heavier than air.
The difference between the amount of chlorine added and turbidity.
The difference between the amount of chlorine added and pH
The difference between the total chlorine residual and the free chlorine residual
The difference between the amount of chlorine added and the amount of residual chlorine remaining after a given contact time.
Authority by the states to supersede USEPA drinking water regulations.
Authority by the USEPA to supersede state drinking water regulations.
Requirement for states to maintain drinking water regulations more stringent than USEPA regulations.
Primary authority for implementation and enforcement of drinking water regulations.
Impaired mental functioning in children
Prostate cancer in men
Stomach and intestinal disorders.
Reduced white blood cell count
Waters ability to neutralize acid
Hydrogen ion activity