0.08 ppm - (correct Answer) - MCL for TTHM's
0.06 ppm - (correct Answer) - MCL for HAA5's
0.01 ppm - (correct Answer) - MCL for Arsenic
0.015 ppm - (correct Answer) - MCL for Lead
90 days - (correct Answer) - Turbidity meter must be calibrated every:
Less than 0.3 for 95% of the time. - (correct Answer) - MCL for turbidity is
2 buffers - (correct Answer) - pH meters must be calibrated using
Algae blooms - (correct Answer) - A grassy of fishy taste in reservoir water indicates
Improper backwashing of filters - (correct Answer) - Mudballs are caused by
Carbonate - (correct Answer) - Lime can only be used to soften water with
0 ppm - (correct Answer) - Water leaving Zeolite softener has a hardness of
Schmutzdecke - (correct Answer) - The top layer of a slow sand filter is called the
Coagulation, flocculation, sedimentation - (correct Answer) - A solids contact unit combines
4 ppm, 2 ppm - (correct Answer) - The PMCL for fluoride is: The SMCL is:
Warmer - (correct Answer) - Flock will settle better in warm or cool water?
High pH - (correct Answer) - The greensand manganese removal process requires a:
Volatile organic compounds & gases (odor) - (correct Answer) - Aeration releases what from water?
Amperomatic tiration - (correct Answer) - The most accurate method of determining chlorine residual is:
Sulfuric acid - (correct Answer) - An alkalinity sample is titrated using
Mixing and measuring - (correct Answer) - A beaker is used for
Nephelometric turbidity units - (correct Answer) - NTU stands for:
5 years, 10 years - (correct Answer) - Bacteria results must be kept for: Chem results for:
Tubrbine, Propeller, Venturi, Nutating discs - (correct Answer) - Four ways water meters operate are:
Procedure, Part, Budget, Cost - (correct Answer) - A preventative maintenance program includes:
Lower insurance rates - (correct Answer) - An advantage of a standpipe:
Geographic Informaton System - (correct Answer) - What is GIS?
, Cavitation (boiling) - (correct Answer) - High flow rates in pumps can cause.
Mechanical rakes, drag chain, traveling bridges - (correct Answer) - Three ways sludge is removed from a
settling basin are
Inlet, Outlet, Settling, Sludge - (correct Answer) - The 4 zones of settling basin are:
Before - (correct Answer) - Polyphosphates are injected before or after chlorination?
Filter aid - (correct Answer) - A nonionic polymer is usually used as a:
Giardia, Legionella, Cryptosporidium - (correct Answer) - Three "bugs" targeted by the SWTR are:
Returned to plant head - (correct Answer) - What should be done with backwash water?
Taste, odor, chlorine, THM's - (correct Answer) - Activated carbon is used to remove:
Adsorption, oxidation, or aeratoin - (correct Answer) - THM's can be removed by:
Less - (correct Answer) - Algae produces more or less oxygen at night as compared to day?
99.99% - (correct Answer) - A LOG removal of 4 is a removal of what percent?
Removes color, taste, odor - (correct Answer) - One outstanding advantage to ozone is:
Monochloromines, Dichloramines, Trichlorimaines - (correct Answer) - Three forms of combined chlorine
residual are:
THM's - (correct Answer) - TOC's are precursor in the formation of:
Deliver very accurate volumes - (correct Answer) - A pipet is used to
Bug in a dormant state - (correct Answer) - What is a spore?
Straight edge, feeler gauge - (correct Answer) - List some tools used to align a coupling between a motor
and a pump.
Differential pressure - (correct Answer) - Rate of flow controllers work on
Head pressure at various points - (correct Answer) - What is hydraulic grade line?
tall buildings - (correct Answer) - An RPZ backflow preventor is used for
90% - (correct Answer) - Electric motors in a water plant accounts for what percent of the total electrical
use?
Methemoglobinemia - (correct Answer) - Excessive nitrates in water causes:
50% - (correct Answer) - Filter beds should expand ____ when backwashing.
Eutrophic - (correct Answer) - When a reservoir is rich in nutrients such as phosphates and nitrogen, its
condition is: