SCRIPT 2026 ACCURATE Q&A
COLLECTION
◉Public water systems are required to compile a monthly report
showing ________.
a. rate increases
b. accidents
c. dates of dead-end flushing
d. disciplinary action. Answer: c. dates of dead-end flushing
◉Most groundwater is relatively free of suspended matter, but
________ can be a major problem in surface water.. Answer: turbidity
◉Color in a public water supply should be less than _____ units..
Answer: less than 15 units
◉Chemical characteristics of water include hardness, pH, solids, and
________.. Answer: gases
◉Water is considered hard when it exceeds ________ mg/L of calcium
carbonate.. Answer: 100 (may vary depending on who you talk to)
,◉A gallon of water weighs _____ pounds and 1 mg/L equals one
________.. Answer: water weights 8.34 pounds
1 mg/L equals one part per million
◉Hydrogen sulfide is heavier than air, colorless, flammable, toxic,
and has a ________ odor.. Answer: rotten egg (unless you get a dose
that's so heavy it numbs your sense of smell)
◉Excessive nitrates in drinking water can cause ________ syndrome in
infants.. Answer: blue baby syndrome
◉Excessive amounts of fluoride may cause ________ or staining of
teeth.. Answer: mottling
◉Trihalomethanes and haloacetic acids are byproducts of
chlorination and may increase ________ risk.. Answer: cancer
◉The action level for copper is _____ mg/L and for lead it is _____
mg/L.. Answer: copper is 1.3 mg/L
lead is 0.015 mg/L
◉_____ are underground, water-bearing formations yielding useful
quantities of water.. Answer: Aquifers
, ◉The quantity of water a formation yields depends on the thickness
and _____ of the formation.. Answer: permeability
◉Problems caused by _____ are declining water levels and
subsidence.. Answer: overpumping
◉Well _____ and cementing protect the well from collapse and
surface contamination.. Answer: Well casing
◉The purpose of the well screen is to keep out birds and insects.
(true/false). Answer: false (the well screen keeps out sand; the well
vent screen keeps out birds and insects)
◉The most important feature of the well screen is the length.
(true/false). Answer: false (the mesh size is the most important
feature)
◉The _____ of the screen is determined by the size of the aquifer
material, the size of the gravel in the gravel pack, and the type of well
development.. Answer: mesh size
◉The gravel pack is fine gravel placed around the screen to reduce
pumping _____.. Answer: sand