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24 Cards in this Set
- Front
- Back
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Are individual pathogens regulated with MCL's? |
No |
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What is the standard measurement for microbiological quality of drinking water? |
Coliform Bacteria |
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What is the MRDL for free chlorine? |
4.0 mg/l |
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What is the most common bacteria found in the human intestine? |
E. Coli |
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What is the term for bacteria that can live with or without oxygen? |
Facultative |
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What is the MCL for coliform bacteria in a distribution system? |
5% |
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What are the three steps in the MPN method? |
Presumptive Confirmed Completed |
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What is the product of lactose fermentation? |
Carbon dioxide |
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What is the product of lactose fermentation? |
Carbon dioxide |
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What is the special ingredient in the confirmed test? |
Brilliant green bile |
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What is the analysis that uses MMO-MUG? |
Colilert |
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Where should SCBA's be stored? |
Relatively close - but not in- the chlorine storage area. |
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How many fusible plugs are there on a one ton chlorine storage container? |
Six |
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How many outlet valves are there on a one ton chlorine container? |
Two |
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How many outlet valves are there on a one ton chlorine container? |
Two |
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Are groundwater sources likely to have algae or pathogen related quality concerns? |
No |
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Which pathogens are the most difficult to remove from water? |
Viruses |
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Which particle size category includes the pathogens? |
Colloidal |
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Name the two barriers to pathogens required by the surface water treatment rule: |
Removal and inactivation |
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What is the automatic Giardia removal credit awarded for a properly operated conventional treatment plant? |
2.5 logs |
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Name the four chemical disinfectants approved by the SWTR: |
Chlorine Chloramines Chlorine Dioxide Ozone |
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What is the means of guaging disinfectant effectiveness under the SWTR? |
CT Calculation |
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What is the minimum virus credit required from disinfection at a properly operated direct filtration plant? |
3 logs |
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What are the two constituents in water that we call hardness? |
Calcium and magnesium |
