Contaminants, Water Quality
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1
True/False: Aluminum is an aesthetic concern
True
2
True/False: Calcium is an aesthetic concern
True
3
True/False: Magnesium is an aesthetic concern
True
4
True/False: Nitrate is an aesthetic concern
False
5
SMCL for aluminum is _____ ppm
0.1
6
True/False: Arsenic is an aesthetic concern
False
7
True/false: Hydrogen sulfide is an aesthetic concern
True
8
True/false: Iron is an aesthetic concern
True
9
True/false: Manganese is an aesthetic concern
True
10
______________ is the buffering capacity of water -- ie. the water's ability to neutralize an acid.
Alkalinity
11
Corrosive water has a ________ (high/low) pH.
low
12
_____________ _____________ aka "caustic soda" is used to increase the pH of corrosive/aggressive water
Sodium hydroxide
13
Orthophosphates, sodium silicates, and polyphosphates are all considered "_______________ inhibitors".
corrosion
14
To avoid algae growth, polyphosphates may not be added in systems without __________________.
chlorine
15
Any chemical addition of _____________________ must later be removed by the wastewater treatment facility.
phosphates
16
Giardia and cryptosporidium are examples of _______________, a single-celled organism.
protozoans
17
"Pathogenic" describes something that causes _______________.
disease
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