Term
Which waterborne diseases below may be spread by water that has
not been properly disinfected? (choose all that apply)
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Malaria, dengue, influenza, tetanus, Typhoid, hepatis, dysentery,
rabies crypto, cholera.
Tuberculosis, measles, polio, Zika, malaria, encephalitis, tetanus,
tetanus, cholera typhoid
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2 of 73
Term
,In a conventional surface water treatment plant, the disinfection
process is normally located:
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First Largest
Middle Last
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3 of 73
Term
What does it mean if fecal coliform is found in a water supply?
(Choose all that apply)
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Oxidized Iron
Prevent damage to the pump motor when not in operation
Pathogenic organisms may be in the water
The water is contaminated
The water is not potable
Waterborne disease outbreak is possible
Harmful bacteria might be in the water
, Calcium Hypochlorite
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4 of 73
Term
Chlorine tablets (Calcium hypochlorite) should not come in contact
with ________ based products due to the violent reaction that will result.
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Alkaline Petroleum
Saltwater Acidic
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5 of 73
Term
What is the minimum flushing requirement when flushing dead-end
mains to make sure proper chlorine residual and water quality is
maintained?
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, Weekly Quarterly
Monthly Annually
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6 of 73
Term
What chlorine dosage is required to disinfect a new or repaired
water line under normal circumstances?
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10 mg/l 50 mg/L
25 mg/l 100 mg/l
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7 of 73
Term
Pipe and fittings used in public water systems may not contain more
than ____% lead or solder and flux may not contain more than ____%
lead.
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