Treatment Process
this can be used to treat taste and odors
activated carbon
the ability of water to resist a change in pH is called
alkalinity
the water supplier's responsibility extends to here
the customer's tap
This parameter is used to indicate the clarity of water
pH
Contaminants which cause health effects when consumed over a long period of time
Chronic
a foul, rotten egg odor from an aeration treatment unit is an indicator of what
hydrogen sulfide
water that requires a large amount of soap to lather
hard
backflow caused by a reduction is system pressure is called
back siphonage
water that is safe to drink is said to be
potable
locked out & tagged out
this is the biggest drawback of UV disinfection
no residual
the chlorine available after the chlorine demand has been satisfied
free chlorine residual
The component of a centrifugal pump sometimes installed on the end of the suction line to maintain prime
Foot valve
The area around a well where the water table is altered by well pumping
zone of influence
MCL
maximum contaminant level
ion exchange
This chemical is present in a bacteria sample bottle for the purpose of neutralizing chlorine
sodium thiosulfate
this can be caused by opening or closing a valve too quickly
water hammer
turbidity is measured in these units
nephelometric turbidity units (NTUs)
which metals are most likely to leach from household plumbing
Lead & copper
When the additional of chlorine to treated water is proportionate to the free chlorine residual you have reached
breakpoint chlorination
High levels of nitrate can cause this in infants
methemoglonemia or blue baby syndrome
the appropriate device for a high hazard cross connection
Reduced pressure zone device (RPZ)
The most common complaints about public drinking water are taste, odor and this...
colored water
which government organization establishes drinking water health standards
Environmenntal protection Agency (EPA)