Geology Reference
In-Depth Information
To determine its quality, compare that information
the FDA standards ( www.cfsan.fda.gov ) and/or the
EPA Groundwater and Drinking Water page ( www.epa
.gov/safewater) and EPA standards for drinking water
(http:/ / www.epa.gov/safewater/ s tandards.html). See
also EPA's Drinking Water and Health http://www.epa
.gov/safewater/dwh/index.html. Additional infor-
mation is available through the Code of Federal Regu-
lations and NSF International ( www.nsf.org ) and
the International Bottled Water Association (www
. bottledwater.org ) .
Small public water systems are allowed to meet
the National Primary Drinking Water Regulations by
installing point-of-use (POU), for direct consumption,
and point-of-entry (POE) treatment devices. Some
consumers on municipal systems install at-the-tap fil-
ters or purchase "pitcher filters" for small amounts of
drinking water. Filters are designed for removing one
or more contaminants.
For information on ground water resources for
the home, see the USGS publication on Ground Water
and the Rural Homeowner (Waller, 2005).
with
3. Define what is meant by artesian water.
4. a. List all the requirements for bottled water to be labeled
mineral water.
b. Does mineral water meet the national Secondary
Drinking Water Regulations? Explain.
5. Examine a bottled water label, your own or one available
in class or online, and record the following information on
this water. You might need to use an online source, often
listed on the bottle, for more information.
Name of the bottled water:
Company:
Size of bottle: mL
oz
Type of water:
Listed geologic source of water (check one or more):
Groundwater aquifer
Spring
River
QUESTIONS 13, PART C
With the aid of information in the Introduction to Part C
(and possibly other sources) answer the questions below.
Lake
Public water system
Other
Geographic source of water:
Methods of treatment (if any):
None:
1. a. What are the sources of bottled water?
None listed:
Distillation
Micron filtration: yes no
Hole size: Nominal (average) =
b. What factors control the taste of bottled water?
or
c. Cryptosporidium is a microscopic parasite that lives in
human/animal intestines. Cysts of the organism in the
public water supply of Milwaukee, Wisconsin, were even-
tually responsible for 400,000 cases of illness and several
deaths. Why did the standard chemical disinfectant used
in public water systems not kill this microorganism?
Absolute (maximum) =
Reverse osmosis
Disinfection
Ozone
Chlorine dioxide
UV light
Chloramine
d. Since that time what changes in treatment for public
water supplies now remove Cryptosporidium?
Chlorine
Other Treatments
Other Label Information:
e. Who sets the standards and regulates bottled water?
6. Check the definitions in the Introduction to this part of the
exercise to help answer the following.
a. What is the definition for purified water?
f. Explain by defining each, the difference between purified
and sterilized water.
Is the bottle of water described in the question above
purified?
2. What is the difference between sparkling water and
sparkling bottled water?
What process was used in the purification?
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