Water Quality Testing

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Created fall 2014 by Joseph Martinetti, United Tribes Technical College
Water Quality Testing
Name _________________________________________________
Date ____________
You will be running three different water quality tests on the provided samples.
Water Test
Information
Safe Levels for Living Organisms
pH
Scale of 1 to 14; pH=7=neutral; pH<7= acid; pH>7=
6.5 to 9
base
Turbidity is a measure of the clarity of water and is
<5 NTU drinking water; <1 NTU for chlorination to
Turbidity
an indicator of water quality.
be effective
Dissolved O
An adequate concentration of dissolved oxygen is
Class AA - Extraordinary > 9.5 mg/l
2
Class A -Excellent > 8.0 mg/l
important for aquatic life.
Class B - Good > 6.5 mg/l
Class C - Fair > 4.0 mg/l
Question: How does water quality vary in different water samples?
You will be testing tap water, bottled water, RO water, and outdoor water to find how they differ.
Hypothesis: Prediction Chart
Water Source
pH:
Turbidity:
Dissolved O
:
2
Acid, Neutral, or Base
<5 NTU
Class AA, Class A, Class B,
or Class C
Tap Water
Bottled Water
RO Water
Outdoor Water
Materials: Tap water
Bottle Water
RO water
Outdoor water
( ) Testing supplies
Procedures:
Procedures will be at your lab stations. Follow all lab procedures carefully and clean your area as
directed.
Data Table 1:
pH (A)
Turbidity (B)
Dissolved O
(C)
2
Tap Water
Bottled Water
RO Water
Outdoor Water ( )

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