Water Supply‐WI Administrative Code Assignment NR 809: What are the two types of pubic water supplies? Does a best available technology for treatment take cost into consideration? What is an entry point?
The purpose of this assignment is to give you some exposure to Wisconsin Administrative Code
requirements for environmental protection specific to Drinking Water. This is not an in‐depth
analysis (that would take an entire class by itself), but something to help you feel comfortable
with Code so you could use the Wisconsin Administrative Code, or a different state’s
equivalent, in the future. Use the WI Administrative Code to answer the following questions.
For each answer include the citation or citations within the WI Administrative Code where you
found your answer. Use the citation format for the WI Administrative Code that was shown to
you in the Introduction to Wisconsin Administrative Code video (not APA format). Submit your
answers to the dropbox by the due date.
1. What are the two types of pubic water supplies?
2. Does a best available technology for treatment take cost into consideration?
3. What is an entry point?
4. A daycare center is open 10 months of the year with teachers and 54 children registered
to attend. If the daycare center has its own water supply, would it be considered a non‐
transient non‐community water system? If not, what type of system is it?
5. Would a Brita on Tap Faucet be considered a POE (point‐of‐entry) or POU (point‐of‐use)
6. Water suppliers must conduct monitoring. Who may increase monitoring requirements?
Who may decrease monitoring requirements if such a decrease will not adversely affect
protection of public health?
7. Under NR 809.07 (2) there is a table of MCLGs that are less than the MCL. Are those
8. When may bottled water be used at a public water supply?
9. What is the MCL for nitrate? For a non‐community non‐transient system that uses
groundwater, what will the monitoring frequency be for nitrate if the system’s last
sample had a result of 6.2 mg/l?
10. Analysis of drinking water samples for inorganic and synthetic organic contaminates is
only conducted by laboratories that have which types of certifications or approval?
11. If a routine sample for microbiological contaminate monitoring is total coliform positive,
that means there was bacteria present in the sample. A public water system must
collect repeat samples for each total coliform positive sample. How many repeat
samples must they collect and how soon must the system collect the samples?
12. How often must a non‐community system undergo a sanitary survey?
13. Wells used for extracting groundwater cannot be placed at any location on a property.
The wells must be placed at specific distances from potential contaminant sources. If a
well was drilled on June 23, 2016, how far away must it have been from the edge of a
stormwater detention pond?
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