Treatment processes
this is the best form of chlorine to maintain for disinfection
Free
these units are the same as mg/L
parts-per-million
these should be installed to prevent contamination from entering a well casing
vent screen
the will leave black staining on customers faucets at 0.05mg/L
manganese
the document used to track a water sample from collection to analysis
chain of custody
the primary purpose of a clear well
a mixture of samples taken over a 24-hour period
composite sample
to prevent cross-connection contamination
when water is not stable, it is either corrosive or
scale forming
150 lb chlorine gas cylinders be transported with this
a trussed hand truck
the chemical process to remove iron and manganese from water
oxidation
this should be done prior to using a pH meter
calibrate the probe
this valve is used to connect a service line to a water main
corporation stop
frequent cause of taste and odors in a well
hydrogen sulfide
this hazardous chemical consists of black and purple crystals
potassium permanganate
a liquid chemical feed pump can be calibrated using this
graduated cylinder and a stopwatch
these are analyzed during a disinfection by-product sample
trihalomethanes or haloacetic acids
this is the most common cause of leakage when using push on joints
unclean/dirty joint
this can be caused by algae in surface water
taste & odor problems
the minimum required pressure during fire flow
20 psi
aluminum sulfate is primarily used for this
coagulation
after a customer complaint, this is the best way to improve water quality
flushing
a pump needs new packing when you see this
too much leakage from the packing gland
this source commonly produces water with high hardness
well water
the basis for establishing MCLs
public health