ANSWERS GRADED A+ LATEST UPDATE.
In Texas, water operator licensing is administered by the? ANS >>>
TCEQ
Which minerals cause hardness in water ANS >>> magnesium and
calcium
the most important federal law impacting the water utility
industry is ANS >>> Safe Drinking Water Act
The four water quality standards established for drinking water
in the Safe Drinking Water Act are chemical, bacteriological,
radiological and ANS >>> chemical, bacteriological, radiological
and physical.
,The minimum allowable pressure in the distribution system
under emergency conditions is ANS >>> 20 psi
Water vapor given off by plants and trees is know as ANS >>>
transpiration
organic matter includes ANS >>> > transpiration
The single most important water treatment process is ANS >>>
disinfection
excessive nitrates in drinking water can cause what syndrome in
infants ANS >>> blue baby
A sanitary control easement must cover land within how many
feet of a public water well ANS >>> 150 feet
A sample for physical and chemical analysis of a new well must
be taken after how many hours of continuous pumping ANS >>> 36
hours
, Chapter 290 Rules and Regulations require chemical analysis of
water supplies every ANS >>> year
Detention time in sedimentation basins must be at least how
many hours to allow floc to settle ANS >>> six
backwashing should expand the filter media by ANS >>> 30 to 50
percent
In Texas, all public water systems are required to have what
facilities ANS >>> chlorination
The MCL for Trihalomethanes in drinking water is ANS >>> 0.080
mg/l
At room temperatures chlorine gas is ANS >>> greenish-yellow, has
pungent odori, and is 2.5 heaver then air
Disease that may be spread by inadequately disinfected water
are ANS >>> typhoid, cholera, infectious hepatitis, legionnaires
disease.