backflow 2025 definitions comprehensive Questions and
Answers with 100% Correct Answers | Latest Version
Question 1.
Norman Slane
Correct Answer: LAPWD's first cross-connection control inspector
Question 2.
Bimini Baths
Correct Answer: West of LA, 104 degree water in 1937
Question 3.
Public Health Service Act
Correct Answer: 1912 authorized surveys and studies for water pollution - prohibited
"common-cup" on trains, ships, etc.
Question 4.
MCL
Correct Answer: Maximum Contaminant Level
Question 5.
Notable outbreaks
Correct Answer: 1913 Worlds fair in Chicago. 1409 people had amoebic dysentery and
98 people died
Question 6.
Federal Safe Drinking Water Act
Correct Answer: Aims to provide all Americans with safe drinking water; sets
contaminant levels for dangerous substances and pathogens. Lead content 0.25% as
of Jan 4 2014. Irrigation and fire suppression exempt.
Question 7.
Air-gap separation
Correct Answer: The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or outlet supplying water to a tank,
plumbing fixture, or other device, and the flood level rim of the receptacle.
, Question 8.
approved air gap separation
Correct Answer: An approved air-gap separation is a distance through the free
atmosphere equal to two times the nominal diameter of the supply pipe discharge
opening, or six inches, but never less than one inch.
Question 9.
auxiliary supply
Correct Answer: Any water source or system, other than the potable water supply,
that may be available in the building or premises.
Question 10.
backflow
Correct Answer: the flow of any foreign liquid, gas or substance into the distributing
potable water supply. May occur under 2 conditions: pressure greater than
atmospheric (back pressure), pressure that is sub-atmospheric (back siphonage)
Question 11.
backflow prevention device, approved
Correct Answer: a device that's been investigated and approved by the IDEM and the
water purvey or having jurisdiction. Approval of the device may be left solely to the
water purveyor at the discretion of regulatory agencies
Question 12.
backflow prevention device tester, certified
Correct Answer: person in good standing who is qualified to test backflow prevention
devices and has proven their competency to the satisfaction of the appropriate
regulatory agencies. The backflow tester needs to hold an Indiana certification
Question 13.
back pressure
Correct Answer: backflow caused by a pump, elevated tank, boiler, or other means
that could create pressure within the system greater than the supply pressure
Question 14.
back siphonage
Correct Answer: negative or sub-atmospheric pressure within a water system
Answers with 100% Correct Answers | Latest Version
Question 1.
Norman Slane
Correct Answer: LAPWD's first cross-connection control inspector
Question 2.
Bimini Baths
Correct Answer: West of LA, 104 degree water in 1937
Question 3.
Public Health Service Act
Correct Answer: 1912 authorized surveys and studies for water pollution - prohibited
"common-cup" on trains, ships, etc.
Question 4.
MCL
Correct Answer: Maximum Contaminant Level
Question 5.
Notable outbreaks
Correct Answer: 1913 Worlds fair in Chicago. 1409 people had amoebic dysentery and
98 people died
Question 6.
Federal Safe Drinking Water Act
Correct Answer: Aims to provide all Americans with safe drinking water; sets
contaminant levels for dangerous substances and pathogens. Lead content 0.25% as
of Jan 4 2014. Irrigation and fire suppression exempt.
Question 7.
Air-gap separation
Correct Answer: The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or outlet supplying water to a tank,
plumbing fixture, or other device, and the flood level rim of the receptacle.
, Question 8.
approved air gap separation
Correct Answer: An approved air-gap separation is a distance through the free
atmosphere equal to two times the nominal diameter of the supply pipe discharge
opening, or six inches, but never less than one inch.
Question 9.
auxiliary supply
Correct Answer: Any water source or system, other than the potable water supply,
that may be available in the building or premises.
Question 10.
backflow
Correct Answer: the flow of any foreign liquid, gas or substance into the distributing
potable water supply. May occur under 2 conditions: pressure greater than
atmospheric (back pressure), pressure that is sub-atmospheric (back siphonage)
Question 11.
backflow prevention device, approved
Correct Answer: a device that's been investigated and approved by the IDEM and the
water purvey or having jurisdiction. Approval of the device may be left solely to the
water purveyor at the discretion of regulatory agencies
Question 12.
backflow prevention device tester, certified
Correct Answer: person in good standing who is qualified to test backflow prevention
devices and has proven their competency to the satisfaction of the appropriate
regulatory agencies. The backflow tester needs to hold an Indiana certification
Question 13.
back pressure
Correct Answer: backflow caused by a pump, elevated tank, boiler, or other means
that could create pressure within the system greater than the supply pressure
Question 14.
back siphonage
Correct Answer: negative or sub-atmospheric pressure within a water system
