Cris Question and answers correctly solved
When was the Federal Safe Drinking water act enacted? - correct answer 1974 went into effect in 1976
What is considered a public water system? - correct answer 15 service connections, residential or serves 25 people regularly
What is MCL? - co...
Cris
When was the Federal Safe Drinking water act enacted? - correct answer
✔1974 went into effect in 1976
What is considered a public water system? - correct answer ✔15 service
connections, residential or serves 25 people regularly
What is MCL? - correct answer ✔Maximum Contaminant Level
What is the optimum dosage for fluoride? - correct answer ✔0.8-1.2 mg/l
What are Primary contaminants ? - correct answer ✔Inorganic chemicals,
organic chemicals, Radioactive chemicals, and waterborne Bacteria
Lead and Copper rule - correct answer ✔.015 mgl 1.3 mgl
What is NTU? - correct answer ✔Nephelometric Turbidity Units
What are the two types of compounds? - correct answer ✔Volatile organic
compounds(VOC) and Synthetic organic Compounds (VOC)
When is the MCL exceeded? - correct answer ✔When 5% of the required
monthly routine(M/R) samples indicate the presence of Coliform bacteria.
When coliform is present in sample - correct answer ✔Will require three
repeat samples be taken within 24 hrs of notification of positive results
, How many samples are required when repeat coliform samples are required?
- correct answer ✔A minimum of 5 samples are now required for the month
What do chlorides make water taste like? - correct answer ✔Salty
What causes red and black water problems? - correct answer ✔Iron or
manganese
water conservation fund - correct answer ✔3 cents per 1000 gallons
How many years do systems retain copies of chemical analysis and bacterial
tests - correct answer ✔10 years for chemicals and 5 years for bacterial
Inorganic chemical analysis must be submitted - correct answer ✔Once
every year for supplies and once every three years for ground water supplies.
When is sampling for organic compounds done? - correct answer ✔Quarterly
for initial set of samples
Most chemical contaminants are monitored in what cycles ? - correct answer
✔3/6/9 each 3 years period is referred to as a compliance period
How many samples are required for the smallest systems - correct answer
✔One sample per month
Why is turbidity a primary contaminant? - correct answer ✔It can shield
harmful bacteria from the disinfection process
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