Contaminants of Concern: Manganese & PFAs

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• * Operator ID# (required for contact hours). If not applicable, enter NA.

• *

  My role is best described as:

  • Water or Wastewater Operator
  • Utility Staff (other)
  • Board or Council Member/Elected Official
  • Manager
  • Regulatory/Primacy
  • TAP/Consultant
  • Other

• I would like to receive information on becoming a water/wasterwater operator.

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Pre-Test

• *

  Which of the following is true?

  • Manganese is one of the rarest elements.
  • Manganese commonly occurs with iron.
  • A visual indicator of manganese is a reddish-brown color.
  • None of the above.
  • All of the above
• *

  What’s the difference between a secondary standard and an advisory?

  • A secondary standard is enforceable; an advisory is not.
  • An advisory is enforceable, a secondary standard is not.​
  • Both are non-enforceable guidelines, but states may adopt them as enforceable standards
• *

  Boiling water will do what to manganese levels?

  • Increase the concentration
  • Decrease the concentration
  • Stay the same
• *

  Which of these statements about PFAS are true?

  • They are chemically unstable
  • They are water soluble
  • They are biodegradable
  • They are volatile
• *

  How is the general public getting exposed to PFAS?

  • Microwave popcorn
  • Fast food wrappers and packaging
  • Bottled beverages
  • All of the above
• *

  Which chemical compound below is known to have the most negative health impacts to humans?

  • Long chain PFAS
  • Short chain PFAS
  • GenX
• *

  What is the EPA’s current PFAS Health Advisory Limit for drinking water?

  • 400 ppt
  • 70 ppt
  • 200 ppt
  • 26 ppt
• *

  Lime softening treatment can be used to treat for PFAS in drinking water.

  • True
  • False

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